Details of a Researcher - OLESZEK, Sylwia Izabela

写真a

OLESZEK, Sylwia Izabela

Affiliation

Faculty of Science and Engineering, Waseda Research Institute for Science and Engineering

Job title

Researcher(Associate Professor)

Degree

Doctor of Philosophy ( 2005 Tohoku University )

Homepage URL

https://www.tokoro.env.waseda.ac.jp/member.html

Education Background

　

-

2005

Tohoku University PhD
　

-

1999

Wroclaw University of Science and Technology Department of Chemistry MSc

Committee Memberships

2023.03

-

Now

Archives of Environmental Protection Editorial Board
2025.04

-

　

Scientific Reports Editorial Board Member (Environmental Engineering)

Professional Memberships

2016

-

Now

Japan Society of Material Cycles and Waste Management
2017

-

2021

The Society of Chemical Engineers, Japan
2015

-

2021

Research Association for Feedstock Recycling of Plastics, Japan

Research Interests

Plastic waste, Thermal degradation, Metals recovery, Microplastics, POPs

Awards

Conference best paper award

2023.09 JSMCWM Basic research of pyrolysis characteristics of municipal solid waste for advanced waste utilization.

Winner： Zhao W, Harada H, Oleszek S, Shiota K, Takaoka M
Paper Award

2022.05 The Society of Environmental Instrumentation Control and Automation

Winner： Kawai T, Oshita K, Kusakabe T, Oleszek S, Shuhei T, Takaoka M, Fujiwara T
Best poster award

2021.11 Oman’s International Conference on Water Engineering and Management of Water Resources, Sultanate of Oman

Winner： Grabda Mariusz, Oleszek Sylwia
Female Researcher Award

2018.07 Kagoshima University
Female Researcher Award

2017.01 Kagoshima University
Clean Japan Center Foundation

2012.01 財団法人クリーン・ジャパン・センター Honda Award for Recycling Technology Development

Winner： Nakamura Takashi, Shibata Etsuro, Oleszek Sylwia, Grabda Mariusz, Institute of Multidisciplnary Research for, Advanced Materials, Tohoku University

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Papers

Effective Separation and Recovery of Manganese and Potassium from Biomass Ash by Solvent Extraction

Sylwia Oleszek, Kenji Shiota, Minhsuan Chen, Masaki Takaoka

ACS Omega 7 ( 23 ) 20155 - 20164 2022.06 [Refereed]

Authorship：Lead author, Corresponding author

DOI PubMed
Quantification of microplastics in Coptodon rendalli and surface waters of Dikgatlhong Dam, Botswana: the first baseline evidence

Baatshwana Caroline Ditlhakanyane, Venecio U. Ultra, Serwalo Mercy Mokgosi, Sekgele Bobby Taupedi, Sylwia Oleszek

Environmental Technology 1 - 11 2025.03 [Refereed]

DOI
Smartphone-Enabled Copper(II) Ion Quantification with an OpticalPlatform and Image Processing Algorithm.

Rozak H., Hidayat A.S., Oleszek S., Ultra V.U. Jr, Rzeznicka I.

ACS Omega 2025 [Refereed]

DOI
Adsorption of nitrate and phosphate ions using ZnCl2-activated biochars from phytoremediation biomasses

Katlarelo Lenny Sefatlhi, Venecio U Ultra, Majoni Stephen, Sylwia Oleszek, Trust Manyiwa

Archives of Environmental Protection 65 - 83 2024.09 [Refereed]

　View Summary

Mishandling and disposal of post-harvested phytoremediation biomass results in secondary pollution. Biochar production is one of the available technologies for processing post-harvested phytoremediation biomasses. The main objective of this study was to assess the potential adsorption of PO43- and NO3- ions from a binary solution by ZnCl2-activated phytoremediation biochars. The biochars were activated using ZnCl2 and analyzed for specific surface area, pore size, volume, surface morphology, point of zero charges (pHpzc), surface functional groups, and elemental composition. Subsequently, the adsorption potential for PO43- and NO3- ions of the activated biochar was investigated. Activation of phytoremediation biochars led to the development of new micropores and increased specific surface area range from 1.62-4.72 m2 g-1 to 4.75- 55.50 m2 g-1. ZnCl2 activation reduced the pHpzc values of Cymbopogon citratus, Cymbopogon nardus, and Chrysopogon zizanioides biochars (BCL2, BCC2, and BCV2) from 9.75, 9.50, 9.62 to 5.72, 5.51, and 6.23, respectively. Activated Chrysopogon zizanioides biochar (ACBCV2), activated Cymbopogon nardus biochar (ACBCC2) and activated Cymbopogon citratus biochar (ACBCL2) showed maximum potential phosphate ion adsorption capacities of 115.70, 101.74, and 270.59 mg g-1, respectively. ACBCL2, ACBCC2, and ACBCV2 indicated maximum potential nitrate ion adsorption capacities of 155.78, 99.42, and 117.71 mg g-1. BCC2, BCL2, ACBCV1, ACBCV2, and ACBCC2 best fitted the Langmuir linear form 1 model during NO3- adsorption. The results obtained in this study showed that ZnCl2-activated phytoremediation biochars have the potential to remove PO4 3- and NO3- ions from PO4 3- and NO3- ions binary solution.

DOI
Evaluation of carbon fixation during carbonization of municipal solid waste

Takeru Shinohara, Sylwia Oleszek, Masaya Shimizu, Naoto Yokoro, Kenji Shiota, Kazuyuki Oshita, Taketoshi Kusakabe, Masaki Takaoka

Journal of Material Cycles and Waste Management 2024.06 [Refereed]

DOI
A stable, non-emulsifying, regenerable ionic liquid-based extraction system for safe removal of perfluorooctanoic acid from water

Mariusz Grabda, Michiaki Matsumoto, Yoshiro Tahara, Maciej ZawadzkiI, Toma Nakano, Sylwia Oleszek

Journal of Environmental Chemical Engineering 112320 - 112320 2024.02 [Refereed]

DOI
Removal of Perfluorooctanoic Acid from Water Using a Hydrophobic Ionic Liquid Selected Using the Conductor-like Screening Model for Realistic Solvents

Mariusz Grabda, Maciej Zawadzki, Sylwia Oleszek, Michiaki Matsumoto, Marek Królikowski, Yoshiro Tahara

Environmental Science & Technology 56 ( 10 ) 6445 - 6454 2022.04 [Refereed]

DOI
Mitigation of bromine-containing products during pyrolysis of polycarbonate-based tetrabromobisphenol A in the presence of copper(I) oxide

Sylwia Oleszek, Shogo Kumagai, Mariusz Grabda, Kenji Shiota, Toshiaki Yoshioka, Masaki Takaoka

Journal of Hazardous Materials 409 2021.05 [Refereed]

Authorship：Lead author, Corresponding author

　View Summary

Polycarbonate (PC) is an engineering thermoplastic that is widely used in electrical and electronic equipment. This plastic often contains tetrabromobisphenol A (TBBA), the most common brominated flame retardant. Thermal degradation of the PC-TBBA leads to generation of numerous bromo-organic products in the pyrolytic oil, hindering its appropriate utilization, as well as corrosive hydrogen bromide gas. The purpose of this study was to experimentally investigate and compare the pyrolysis products of PC-TBBA and PC-TBBA + Cu2O at various temperatures, with an emphasis on the yield and distribution of brominated compounds. In pyrolysis of PC-TBBA + Cu2O, at the maximum degradation temperature (600 °C), as much as 86% of total Br was trapped in the residue, while 3% and 11% were distributed in the condensate and gas fractions, respectively. In contrast, the distribution of Br from non-catalytic pyrolysis of PC-TBBA (600 °C) was 0.5% residue, 40% condensate, and 60% gas. The results of this study revealed that in the presence of Cu2O, organo-bromine products were most likely involved in Ullman-type coupling reactions, leading to early cross-linking of the polymer network that efficiently hinders their vaporization. HBr in the gas fraction was suppressed due to effective fixation of bromine in residue in the form of CuBr.

DOI PubMed
Comparison of sewage sludge mono-incinerators: Mass balance and distribution of heavy metals in step grate and fluidized bed incinerators

Yingchao Cheng, Sylwia Oleszek, Kenji Shiota, Kazuyuki Oshita, Masaki Takaoka

Waste Management 105 575 - 585 2020.03 [Refereed]

　View Summary

We investigated the distribution of 18 elements including non-volatiles (Al, P, Ca, Fe, Mg, K, Mn, Cu, Na, Cr, and Ni), semi-volatiles (Zn, Pb, Ag, As, and Cd), and volatiles (Hg and S) and compared their behaviors in two types of full-scale sewage sludge mono-incinerators, namely, a step-grate stoker (GS) and two fluidized bed incinerators (F-types), with the same feed sludge. Most of the non-volatile elements were enriched five-fold in all incinerated sewage sludge ash (ISSA), while the volatile S and Hg were barely enriched in ash due to the combustion components generated in the gas phase. While the semi-volatile elements were also enriched five-fold in the F-types, a different enrichment behavior was observed in the GS. Boiler and multi-cyclone dust in the GS showed higher enrichments of Pb and Cd compared to ash due to the combined effects of lower temperature and smaller particle size. Compared to the F-types, the GS generated ashes with lower toxicity as the major component (99.7%) and hazardous dust as the minor component. In the future, more attention should be paid to grate stokers in terms of recycling ISSA.

DOI PubMed
Removal of PFASs from water with ionic liquids: Quantum-mechanical and experimental studies

Mariusz Grabda, Sylwia Oleszek

2019 Advances in Science and Engineering Technology International Conferences, ASET 2019 2019.05 [Refereed]

　View Summary

This PFASs are man-made chemicals with vast number of useful applications. Wide use of the chemicals during last decades resulted in their common widespread in natural environment, especially in water. Recent studies revealed toxic and bio-accumulative character of PFASs for human and wildlife. Many remediation techniques for removal of PFASs from water were performed, however, due to the high stability of C-F bonds, PFASs exhibit exceptional resistance to most of the conventional removal methods. The most common solution for the removal of PFASs remains, so far, adsorption using activated carbon. However, the major problem of this technique is expensive regeneration of the carbonaceous material. New technological solutions for removal of the emerging contaminants from water environment are in high demand. The paper presents recent developments in separation of persistent organic pollutants with a usage of ionic liquids and introduces theoretical approach for identification and design of ionic liquids useful for efficient separation of PFASs from water environment.

DOI
A synthesis of vitreous carbon from bromine flame retarded high impact polystyrene

Sylwia Oleszek, Mariusz Grabda, Adline Nwodo, Takashi Nakamura, Alfons Buekens

2019 Advances in Science and Engineering Technology International Conferences, ASET 2019 2019.05

Authorship：Lead author, Corresponding author

　View Summary

Brominated flame retardants (BFRs) have been commonly adding to plastics (e.g. high impact polystyrene (HIPS), acrylonitrile-butadiene-styrene (ABS), blend of polycarbonate/ABS) of electric and electronic equipment (EEE) to support fire-resistance of the appliances. The reasonable presence of BFRs in the EEE makes, however, recycling of the BFRs-containing plastics from waste electric and electronic equipment (WEEE) extremely difficult and technologically challenging. Nowadays, chemical recycling of the waste via pyrolytical transformation of troublesome BFRs-containing plastics into basic materials, is thought as most reasonable recycling solution. Considering that carbon is the main element of the plastics, the obtained carbonaceous feedstock (hydrocarbons) can be utilized as inexpensive (waste originated) sources of carbon for production of advanced value-added carbonic materials. In this study, the bromine flame retarded high impact polystyrene (Br-HIPS) is utilized for generation of porous structured vitreous carbon in consecutive pyrolytic-catalytic process.

DOI
Upcycling of e-waste plastics containing brominated flame retardants into valuable carbon material

Sylwia Oleszek, Mariusz Grabda, Etsuro Shibata, Takashi Nakamura, Alfons Buekens

2018 Advances in Science and Engineering Technology International Conferences, ASET 2018 1 - 4 2018.06 [Refereed]

Authorship：Lead author, Corresponding author

　View Summary

E-waste plastics are the fastest growing waste stream. The e-waste plastics are heterogeneous mixture of various plastics and additives including brominated flame retardants (BFRs). This study is to show ability of generation of valuable carbonic material from gases formed during pyrolysis of e-waste plastics by chemical vapor deposition on the selected catalyst.

DOI
Distribution of inorganic bromine and metals during co-combustion of polycarbonate (BrPC) and high-impact polystyrene (BrHIPS) wastes containing brominated flame retardants (BFRs) with metallurgical dust

Mariusz Grabda, Sylwia Oleszek, Etsuro Shibata, Takashi Nakamura

Journal of Material Cycles and Waste Management 20 ( 1 ) 201 - 213 2018.01 [Refereed]

Authorship：Corresponding author

　View Summary

This study focused on the thermal degradation of polycarbonate (BrPC) and high-impact polystyrene (BrHIPS), containing different brominated flame retardants. The evolved inorganic bromine was utilized for the separation of metals present in electric arc furnace dust (EAFD). The thermal degradation of BrPC generated inorganic gaseous HBr (69%) and condensable Br2 (31%). The bromine evolved from BrHIPS was detected almost entirely in a condensed phase as SbBr3. When mixed with EAFD, the evolved inorganic bromine reacted immediately with the metallic components of zinc and lead, but not with iron. The best bromination efficiencies were obtained during the isothermal heating (80 min at 550 °C) of the mixtures at mass ratios of 6:1 and 9:1 w/w under oxidizing conditions. The achieved brominating rates reached 78 and 81% for zinc and 90 and 94% for lead in 6:1 and 9:1 BrPC:EAFD, respectively, and 47 and 65% for zinc and 67 and 63% for lead in 6:1 and 9:1 BrHIPS:EAFD, respectively. The oxidizing condition favored complete vaporization of the formed bromides.

DOI
Predictive model for ionic liquid extraction solvents for rare earth elements

Mariusz Grabda, Sylwia Oleszek, Mrutyunjay Panigrahi, Dmytro Kozak, Franck Eckert, Etsuro Shibata, Takashi Nakamura

AIP Conference Proceedings 1702 2015.12 [Refereed]

　View Summary

The purpose of our study was to select the most effective ionic liquid extraction solvents for dysprosium (III) fluoride using a theoretical approach. Conductor-like Screening Model for Real Solvents (COSMO-RS), based on quantum chemistry and the statistical thermodynamics of predefined DyF3-ionic liquid systems, was applied to reach the target. Chemical potentials of the salt were predicted in 4,400 different ionic liquids. On the base of these predictions set of ionic liquids' ions, manifesting significant decrease of the chemical potentials, were selected. Considering the calculated physicochemical properties (hydrophobicity, viscosity) of the ionic liquids containing these specific ions, the most effective extraction solvents for liquid-liquid extraction of DyF3 were proposed. The obtained results indicate that the COSMO-RS approach can be applied to quickly screen the affinity of any rare earth element for a large number of ionic liquid systems, before extensive experimental tests.

DOI
Theoretical selection of most effective ionic liquids for liquid-liquid extraction of NdF<inf>3</inf>

Mariusz Grabda, Sylwia Oleszek, Mrutyunjay Panigrahi, Dmytro Kozak, Franck Eckert, Etsuro Shibata, Takashi Nakamura

Computational and Theoretical Chemistry 1061 72 - 79 2015.06 [Refereed]

　View Summary

The purpose of this study was to select the most effective ionic liquid (IL) extraction solvents for NdF3 using a theoretical conductor-like screening model for real solvents (COSMO-RS) for predefined NdF3-IL systems. Chemical potentials of NdF3 were predicted in 900 hydrophobic ILs. On the basis of these predictions, a number of IL ions showing a significant decrease in their chemical potentials were selected. Considering the calculated physicochemical properties of ILs containing these specific ions, the most effective IL extraction solvents for liquid-liquid extraction of the salts were proposed. This study shows that the COSMO-RS approach can be applied before conducting extensive experiments to quickly screen the affinity of any rare earth element for many IL systems.

DOI
COSMO-RS screening for efficient ionic liquid extraction solvents for NdCl<inf>3</inf> and DyCl<inf>3</inf>

Mariusz Grabda, Mrutyunjay Panigrahi, Sylwia Oleszek, Dmytro Kozak, Franck Eckert, Etsuro Shibata, Takashi Nakamura

Fluid Phase Equilibria 383 134 - 143 2014.12 [Refereed]

　View Summary

The purpose of our study was to select the most effective ionic liquid (IL) extraction solvents for NdCl3 and DyCl3 using a theoretical conductor-like screening model for real solvents (COSMO-RS) based on quantum chemistry and the statistical thermodynamics of predefined NdCl3-IL and DyCl3-IL systems. The thermodynamics of the extraction process were predicted with the COSMO-RS method.NdCl3 and DyCl3 were considered in 4400 different ILs. As predicted, the chemical potential values of both NdCl3 and DyCl3 decreased significantly in systems with ILs based on the cation of dodecyl-dimethyl-3-sulfopropylammonium and the anions of bis(2,4,4-trimethylpentyl) phosphinate, decanoate, and benzoate.Considering the calculated physicochemical properties of the ILs containing these specific ions, the most effective IL extraction solvents for liquid-liquid extraction of the salts were selected. Experiments confirmed the high extraction efficiency of the ionic liquids chosen based on the COSMO-RS predictions.The COSMO-RS approach can be applied before extensive experimental tests to quickly screen the affinity of any rare earth element (REE) for a large number of IL systems, if only the physical dissolution of the REEs is considered.

DOI
Study on simultaneous recycling of EAF dust and plastic waste containing TBBPA

Mariusz Grabda, Sylwia Oleszek, Etsuro Shibata, Takashi Nakamura

Journal of Hazardous Materials 278 25 - 33 2014.08 [Refereed]

　View Summary

In the present work we investigated the fates of zinc, lead, and iron present in electric arc furnace dust during thermal treatment of the dust with tetrabromobisphenol A (TBBPA) and tetrabromobisphenol A diglycidyl ether (TBBPADGE). Mixtures of these materials were compressed into pellets and heated in a laboratory-scale furnace at 550. °C for 80. min, under oxidizing and inert conditions.The solid, condensed, and gaseous-phase products were characterized using an array of analytical methods: scanning electron microscopy, X-ray diffraction, electron probe microscopy, inductively coupled plasma, ion chromatography, and gas chromatography.The results indicated that heating the mixtures under specific conditions enabled high separation of zinc and lead from iron-rich residues, by a bromination-evaporation process. In the case of TBBPADGE, a maximum of 85% of zinc and 81% of lead were effectively separated under the above conditions.The process is based on the reaction between the highly reactive HBr gas evolved during thermal degradation of the flame-retarded materials with zinc (ZnO and ZnFe2O4) and lead in the dust, followed by complete evaporation of the formed metallic bromides from the solid residue. © 2014 Elsevier B.V.

DOI PubMed
Fate of lead oxide during thermal treatment with tetrabromobisphenol A

Sylwia Oleszek, Mariusz Grabda, Etsuro Shibata, Takashi Nakamura

Journal of Hazardous Materials 261 163 - 171 2013.10

Authorship：Lead author, Corresponding author

　View Summary

In this paper, the bromination reaction between lead oxide and hydrogen bromide originating from the thermal decomposition of tetrabromobisphenol A (TBBPA), under inert and oxidizing atmospheres, was investigated, using a laboratory-scale furnace. The results obtained under inert conditions indicated that bromination of PbO proceeded simultaneously with debromination of TBBPA, with an average effectiveness of 69% (max. 80%). Volatilization of the formed PbBr2 began at 315°C, intensified at 750°C, and reached 98% at 850°C. The formed organic char served as a source of carbon for reduction of the unreacted lead oxide to metallic lead in the range 315-750°C. Additional experiments conducted at selected temperatures under slightly oxidizing (5vol% O2) and quasi-atmospheric (20vol% O2) conditions showed no significant effects on bromination-evaporation of lead in the studied mixture. However, in isothermal treatment under quasi-atmospheric oxygen levels, complete vaporization of the formed lead bromide was obtained at a temperature of only 650°C. © 2013.

DOI PubMed
Distribution of copper, silver and gold during thermal treatment with brominated flame retardants

Sylwia Oleszek, Mariusz Grabda, Etsuro Shibata, Takashi Nakamura

Waste Management 33 ( 9 ) 1835 - 1842 2013.09

Authorship：Lead author, Corresponding author

　View Summary

The growing consumption of electric and electronic equipment results in creating an increasing amount of electronic waste. The most economically and environmentally advantageous methods for the treatment and recycling of waste electric and electronic equipment (WEEE) are the thermal techniques such as direct combustion, co-combustion with plastic wastes, pyrolysis and gasification. Nowadays, this kind of waste is mainly thermally treated in incinerators (e.g. rotary kilns) to decompose the plastics present, and to concentrate metals in bottom ash. The concentrated metals (e.g. copper, precious metals) can be supplied as a secondary raw material to metal smelters, while the pyrolysis of plastics allows the recovery of fuel gases, volatilising agents and, eventually, energy. Indeed, WEEE, such as a printed circuit boards (PCBs) usually contains brominated flame retardants (BFRs). From these materials, hydrobromic acid (HBr) is formed as a product of their thermal decomposition.In the present work, the bromination was studied of copper, silver and gold by HBr, originating from BFRs, such as Tetrabromobisphenol A (TBBPA) and Tetrabromobisphenol A-Tetrabromobisophenol A diglycidyl ether (TTDE) polymer; possible volatilization of the bromides formed was monitored using a thermo-gravimetric analyzer (TGA) and a laboratory-scale furnace for treating samples of metals and BFRs under an inert atmosphere and at a wide range of temperatures. The results obtained indicate that up to about 50% of copper and silver can evolve from sample residues in the form of volatile CuBr and AgBr above 600 and 1000. °C, respectively. The reactions occur in the molten resin phase simultaneously with the decomposition of the brominated resin. Gold is resistant to HBr and remains unchanged in the residue. © 2013 Elsevier Ltd.

DOI
Study of the reactions between tetrabromobisphenol A and PbO and Fe <inf>2</inf>O<inf>3</inf> in inert and oxidizing atmospheres by various thermal methods

Sylwia Oleszek, Mariusz Grabda, Etsuro Shibata, Takashi Nakamura

Thermochimica Acta 566 218 - 225 2013

Authorship：Lead author, Corresponding author

　View Summary

DSC, TG, and TG.MS techniques were used to investigate the reactivity of PbO and Fe2O3 with HBr from thermal degradation of tetrabromobisphenol A under inert and oxidizing atmospheres. The HBr acted as an excellent brominating agent for PbO and separated Pb as a volatile bromide (79 and 90% in He and He + 5 vol% O2, respectively) from the solid up to 580 °C. For Fe2O3, the amount of vaporized bromide was only 20 and 13% under inert and oxidizing atmospheres, respectively. In inert atmosphere the formed char acted as a reducing agent for converting the remaining oxides into metallic forms. For TBBPA + PbO, about 3% of metallic Pb remained in the residue as most of the oxide vaporized below 970 °C. The unreacted Fe2O3 underwent progressive reduction into metallic Fe (75%), which remained in the residue. In oxidizing atmosphere, the unreacted PbO vaporized completely, while the Fe2O3 remained unchanged in the residue. The organic char decomposed and vaporized as carbon mono- and di-oxides. Simultaneous TG-MS measurements indicated that the presence of PbO and Fe2O3 strongly accelerated TBBPA degradation and enhanced char formation. © 2013 Elsevier B.V. All rights reserved.

DOI
Concept of EAF dust treatment using waste plastics containing brominated flame retardants

Mariusz Grabda, Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

European Metallurgical Conference, EMC 2013 293 - 302 2013 [Refereed]

　View Summary

Tetrabromobisphenol A (TBBPA) is the largest volume brominated flame retardant (BFR) in production today, used in more than 70 % of the world's electronic and electric (E&E) appliances as well as in many plastics, textiles and so forth. There is constant growth in the production of such products and they become obsolete quickly, this generates huge amounts of BFR-containing wastes and causes significant problems for their safe disposal and recycling. Due to the presence of significant amounts of leachable heavy metals, EAF dusts (EAFD) are classified as hazardous wastes. On the other hand the EAF dust contains up to 35 % of Zn, and is considered to be a valuable secondary raw material in the production of zinc. Numerous zinc recovery processes have been developed, many of them, however, were not commercialized because of metallurgical and economical inefficiencies. Few pyrometallurgical processes like Waelz rotary kiln process have achieved commercial success. Its main disadvantage, however, is high energy consumption (Waelz process requires temperatures of 1200-1300 °C). We proposed another alternative method for pyrometallurgical recycling of EAF dust using plastic waste containing BFRs such as TBBPA. It easily decomposes during thermal processing generating large amounts of gaseous HBr that can acts as a brominating agent for the bromination-evaporation of zinc and lead present in the dust. A new concept of EAF dust treatment process is proposed using waste plastics containing BFRs and merits and demerits are discussed with a review of EAF dust treatments in the present paper.
TG and TG-MS methods for studies of the reaction between metal oxide and brominated flame retardant in various atmospheres

Sylwia Oleszek, Mariusz Grabda, Etsuro Shibata, Takashi Nakamura

Thermochimica Acta 527 13 - 21 2012.01 [Refereed]

Authorship：Lead author, Corresponding author

　View Summary

TG and TG-MS measurements were used to investigate the reactivity of ZnO with HBr originating from thermal degradation of TBBPA and with SbBr 3 under various atmospheres. It was found, that the HBr is an excellent brominating agent for ZnO and separates zinc as a volatile bromide (50 and 70% in He and He + 5 vol% O 2, respectively) from the solid residue. In inert atmosphere the formed char plays an important role as reduction agent for remaining ZnO into metallic Zn, which vaporizes completely from the residue above 890 °C. In presence of oxygen, the char is oxidized into CO and CO 2 and un-reacted ZnO remains. Bromination efficiency from thermal treatment of SbBr 3 + ZnO in He is about 14% only. Such low efficiency may results from highly volatile SbBr 3 sublimating from the mixture above 100 °C and its high ability to form thermally stable oxybromide compound (Sb 8O 11Br 2). Simultaneous TG-MS measurements indicate that the presence of ZnO strongly influences the TBBPA degradation pathway and causes enhancement of char formation. Catalyzing effect of ZnO on evaporation of SbBr 3 was also observed. © 2011 Elsevier B.V. All rights reserved.

DOI
Alternative method for pyrometallurgical recycling of EAF dust using plastic waste containing tetrabromobisphenol A

S. Oleszek-Kudlak, M. Grabda, E. Shibata, Takashi Nakamura

High Temperature Materials and Processes 30 ( 4 ) 359 - 366 2011.08 [Refereed]

　View Summary

Tetrabromobisphenol A (TBBPA) is the largest volume brominated flame retardant (BFR) in production today, used in more than 70% of the world's electronic and electric (E&E) appliances as well as in many plastics, textiles and so forth. There is constant growth in the production of such products and they become obsolete quickly, this generates huge amounts of BFR-containing wastes and causes significant problems for their safe disposal and recycling. The most common way to use them is in thermal processing. TBBPA easily decomposes during this process, generating significant amounts of gaseous HBr. The HBr is present mostly in the flue gas and can act as a bromination agent for selective bromination-evaporation of heavy metals present in co-combusted metallurgical dusts, like zinc and lead-rich electric arc furnace (EAF) dust. EAF dust, though classified by various government regulatory agencies as hazardous waste, is considered a valuable secondary raw material in the production of zinc. The worldwide generation of EAF dust represents a possible recovery of approximately 1.4 million tons of zinc. Thus the co-combustion of the mixed wastes can be chance for simultaneous recovery of both, energy from waste plastics and inorganic fractions from the dust, while the separated iron oxide-rich residues can be used as iron-making and steelmaking resources. In this study, a laboratory-scale furnace was used to investigate (1) the reactivity of zinc with the product of the thermal decomposition of TBBPA, and effect of (2) temperature on the efficiency of the bromination and vaporization processes. Copyright © 2011 De Gruyter.

DOI
Vaporization of zinc during thermal treatment of ZnO with tetrabromobisphenol A (TBBPA)

Mariusz Grabda, Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

Journal of Hazardous Materials 187 ( 1-3 ) 473 - 479 2011.03 [Refereed]

　View Summary

In the present work we investigate the vaporization of zinc or its compounds during thermal treatment of ZnO with tetrabromobisphenol A. Samples of 2g of ZnO:TBBPA (3.34:1) were isothermally heated in a laboratory-scale furnace at temperatures from 490°C to 950°C, and the solid, condensed and gaseous products formed were analyzed by X-ray diffraction analysis, electron probe microanalysis, inductively coupled plasma analysis, ion chromatography, and gas chromatography coupled with mass spectrometry. The results obtained indicate that the vaporization of ZnBr2 formed strongly depends on heating time and temperature, yet is restrained by char, if formed with sufficient yield (above 15wt%). Starting from 850°C, this char commences carbothermic reduction of any remaining ZnO, which from then begins to evaporate as zinc metal vapor. Volatilization of zinc is completed at 950°C. The presence of 5vol.% of oxygen has no significant effect on the vaporization of formed ZnBr2, the carbothermic reduction or the volatilization of metallic zinc. Strongly oxidizing conditions (20vol.% of oxygen), however, boost the oxidation of char and thus the vaporization of ZnBr2, but prevent carbothermic reduction of any un-reacted ZnO by depleting this char. © 2011 Elsevier B.V.

DOI PubMed
Pyrometallurgical recycling of EAF dust using plastic waste containing TBBPA

Mariusz Grabda, Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

Proceedings - European Metallurgical Conference, EMC 2011 4 1335 - 1348 2011 [Refereed]

　View Summary

Tetrabromobisphenol A (TBBPA) is the largest volume brominated flame retardant (BFR) in production today, used in more than 70 % of the world's electronic and electric (E&E) appliances as well as in many plastics, textiles and so forth. There is constant growth in the production of such products and they become obsolete quickly, this generates huge amounts of BFR-containing wastes and causes significant problems for their safe disposal and recycling. The most common way to treat them is thermal processing. TBBPA easily decomposes during this process, generating significant amounts of gaseous HBr. The HBr is present mostly in the flue gas and can act as a bromination agent for selective bromination-evaporation of heavy metals present in co-combusted metallurgical dusts, like zinc and lead-rich electric arc furnace (EAF) dust. EAF dust, though classified by various government regulatory agencies as hazardous waste, is considered a valuable secondary raw material in the production of zinc. The worldwide generation of EAF dust represents a possible recovery of approximately 1.4 million tons of zinc. Thus the cocombustion of the mixed wastes can be a opportunity for simultaneous recovery of both, energy from waste plastics and inorganic fractions from the dust, while the separated iron oxide-rich residues can be used as iron-making and steel-making resources. In this study, a laboratory-scale furnace was used to investigate (1) the reactivity of zinc with the product of the thermal decomposition of TBBPA, and effect of (2) temperature on the efficiency of the bromination and vaporization processes.
Studies on bromination and evaporation of antimony oxide during thermal treatment of tetrabromobisphenol A (TBBPA)

Michał Rzyman, Mariusz Grabda, Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

Journal of Analytical and Applied Pyrolysis 88 ( 1 ) 14 - 21 2010.05 [Refereed]

Authorship：Corresponding author

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In this paper the bromination reaction between antimony oxide (Sb2O3) and hydrobromic acid, originating from the thermal decomposition of tetrabromobisphenol A (TBBPA), under inert and oxidative atmospheres was investigated using differential scanning calorimetry (DSC) analysis and a laboratory-scale furnace. The results indicate that the bromination follows the decomposition of the TBBPA and takes place below 340 °C in the furnace and around 280 °C during DSC analysis. During thermal treatment of a mixture of TBBPA and Sb2O3 (2.82:1, w/w), it was observed that volatilization of the SbBr3 began immediately after its formation occurred at about 340 °C. The maximum amount of antimony converted into SbBr3 (above 60%) was obtained from runs conducted at temperatures between 440 and 650 °C. The main intermediate products found in the solid residue were Sb4O5Br2 and Sb8O11Br2, which then decompose to more stable compounds such as Sb2O3 at temperatures above 440 °C. Finally, when a temperature of 650 °C is reached, Sb2O3 undergoes a carbothermic reduction into metallic antimony. Additional experiments conducted at selected temperatures under an oxidative atmosphere (He + 5%O2) indicated that the presence of oxygen has only a small influence on the bromination reaction, however, these conditions may enhance the decomposition of TBBPA at 340 °C, which may result in enhanced evaporation of the formed SbBr3 at 340 °C. © 2010 Elsevier B.V. All rights reserved.

DOI
Influence of temperature and heating time on bromination of zinc oxide during thermal treatment with tetrabromobisphenol A

Mariusz Grabda, Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

Environmental Science and Technology 43 ( 23 ) 8936 - 8941 2009.12 [Refereed]

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Our prior research indicates that hydrogen bromide (HBr) evolved during thermal decomposition of tetrabromobisphenol A (TBBPA) can be utilized as a reagent for selective bromination and evaporation of zinc oxide. The present work investigated dependency of the bromination reaction on time at selected temperatures using a laboratory-scale furnace. The formed solid, condensed, and gaseous products were analyzed by X-ray diffraction analysis, electron probe microanalysis, inductively coupled plasma analysis, ion chromatography, and gas chromatography coupled with mass spectrometry. Results indicate that the bromination rate is strongly dependent on heating time. This dependency is a direct consequence of progress in the decomposition of TBBPA, which provides inorganic bromine suitable for the reaction. The bromination rate increases with time until the bromine source is depleted. The process is shorter at higher applied temperatures and appears instantaneous at 310°C and above. However, the maximum bromination yield is independent of the applied conditions and ranges from 64 to 70%. Additionally, the influence of oxidizing conditions on the bromination reaction and the effect of ZnO on decomposition of TBBPA were investigated in this study. © 2009 American Chemical Society.

DOI PubMed
Prediction of vapour pressures of chlorobenzenes and selected polychlorinated biphenyls using the COSMO-RS model

Katsuhiko Nakajoh, Mariusz Grabda, Sylwia Oleszek-Kudlak, Etsuro Shibata, Frank Eckert, Takashi Nakamura

Journal of Molecular Structure: THEOCHEM 895 ( 1-3 ) 9 - 17 2009.02 [Refereed]

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The applicability of the Conductor-like Screening Model for Real Solvents (COSMO-RS) for the prediction of the liquid phase vapour pressure of chlorobenzenes (CBzs) and polychlorinated biphenyls (PCBs) is presented. The liquid phase vapour pressures of 12 CBzs, biphenyl and 26 PCBs, and their enthalpies of vaporization derived from the temperature dependence of the predicted vapour pressure using the Clausius-Clapeyron equation. These predicted values using COSMO-RS method were compared not only with the literature data but also with the empirical vapour pressure data, obtained using the Knudsen effusion method in our previous papers. In general, COSMO-RS method successfully predicts the vapour pressures of CBzs and PCBs over a wide temperature range including room temperature. In particular, a good agreement was observed between the COSMO-RS predicted and experimental vapour pressures of low-chlorinated CBzs and non-ortho PCBs. For PCBs, the errors between the predicted and experimentally measured values were larger for the congeners that have more chlorine substitutions in the ortho-position. The Root Mean Square Errors (RMSEs) of the COSMO-RS predictions for CBzs, and the non-ortho, mono-ortho, di-ortho and tri-ortho congeners of PCBs were in the range of 0.035-0.539, 0.079-0.21, 0.28-0.58, 0.47-0.74 and 0.77-0.87, respectively. © 2008 Elsevier B.V. All rights reserved.

DOI
Studies on bromination and evaporation of zinc oxide during thermal treatment with TBBPA

Mariusz Grabda, Sylwia Oleszek-Kudlak, Michal Rzyman, Etsuro Shibata, Takashi Nakamura

Environmental Science and Technology 43 ( 4 ) 1205 - 1210 2009.02 [Refereed]

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Thermodynamic considerations indicate that base metal oxides such as ZnO, PbO, Cu2O, etc. should easily react with HBr, the main gaseous product from the thermal decomposition of tetrabromobisphenol A (TBBPA), to form low boiling point metallic bromides suitable for volatile separation. In this work a differential scanning calorimeter and laboratory-scale furnace was used to investigate the scope and conditions for the bromination of ZnO by the thermal decomposition of TBBPA. The formed solid, condensed, and gaseous products were analyzed by X-ray diffraction analysis, electron probe microanalysis, inductively coupled plasma analysis, ion chromatography, and gas chromatography coupled with mass spectrometry. The results obtained in this study indicate that the bromination of ZnO occurred at 272°C (DSC) and above 290 °C (furnace) with an effectiveness of 41, 64, and 81% dependent on the experimental conditions. Volatilization of the formed ZnBr2 began at 340 °C and had a 45% yield at 650 °C. This yield corresponded to 28-36% of the original zinc content in the mixture under the present experimental conditions. © 2009 American Chemical Society.

DOI PubMed
Studies on bromination reaction of heavy metal oxides by SbBr3 and TBBPA with thermal methods

Oleszek-Kudlak Sylwia, Grabda Mariusz, Rzyman Michal, Shibata Etsuro, Nakamura Takashi

Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 657 - 664 2008 [Refereed]

Authorship：Lead author, Corresponding author

　View Summary

Tetrabromobisphenol A (TBBPA) and many systems based on the synergistic effect of brominated organic compounds with Sb2O3 are extensively used as effective brominated flame retardants (BFRs) in many materials such as plastics and textiles. Thermal degradation of BFR-containing plastics leads to the formation of hydrocarbons and gaseous compounds such as HBr and SbBr3. Our thermodynamic considerations indicate that these gases can act as bromination agents for metallic oxides such as ZnO, Cu 2O, CuO, PbO and FeO. Moreover, these metallic oxides have the thermodynamic tendency to brominate easier than does Sb2O 3. The aim of this study was to investigate experimentally the reactivity of ZnO with 1) HBr originating from the thermal decomposition of TBBPA and 2) SbBr3, which is formed during thermal degradation of brominated flame retardant plastics. The thermal treatments of the mixture of compounds of interest were investigated by thermogravimetry coupled with mass spectrometry.
Studies on bromination and volatile separation of metallic oxides by gaseous products from thermal decomposition of TBBPA

Grabda Mariusz, Oleszek-Kudlak Sylwia, Michal Rzyman, Shibata Etsuro, Nakamura Takashi

Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 647 - 655 2008 [Refereed]

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Thermodynamic considerations indicate that heavy metal oxides should easily react with HBr, the main gaseous product from the thermal decomposition of tetrabromobisphenol A (TBBPA), forming low boiling point metallic bromides suitable for volatile separation. Mechanisms and kinetics of the bromination reactions must be well recognized prior to developing of a new treatment for the simultaneous recycling of plastic waste containing brominated flame retardants (BFRs) and metal oxides (printed circuit boards, automotive shredder residue, plating sludge, metallurgical dusts). In this work, a differential scanning calorimeter and laboratory-scale furnace were used to investigate the possibility and conditions of the bromination of ZnO by product of thermal decomposition of TBBPA. The formed solid, condensed and gaseous products were analyzed by X-ray diffraction analysis, electron probe microanalysis, inductively coupled plasma analysis, ion chromatography and gas chromatography coupled with mass spectrometry.
Gas phase thermodynamic properties of PBDEs, PBBs, PBPs, HBCD and TBBPA predicted using DFT method

Mariusz Grabda, Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

Journal of Molecular Structure: THEOCHEM 822 ( 1-3 ) 38 - 44 2007.11 [Refereed]

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The gas phase thermodynamic properties of 209 polybrominated diphenyl ethers (PBDEs), 209 polybrominated biphenyls (PBBs), 19 polybrominated phenols (PBPs), hexabromocyclododecane (HBCD) and tetrabromobisphenol A (TBBPA), including standard state entropy (S{ring operator}), heat capacity (Cp), enthalpy (Δ Hf{ring operator}) and Gibbs free energy of formation (Δ Gf{ring operator}), were predicted using a combination of quantum mechanical computations performed using the Gaussian 03 program at the B3LYP/6-31G(d) level, and thermodynamic relationships derived from the law of energy conservation. The obtained results showed a strong influence of the bromine substitution pattern on the thermodynamic properties of the compounds. For instance, the thermodynamic stability of all congeners decreases with increasing number of Br atoms, especially if substituted at ortho < meta < para positions. Taking into account differences in the Gibbs free energy of formation, the most and least stable congeners in each isomer group were determined. Application of the obtained results in the thermodynamic analysis of the reported experimental stabilities of the compounds afforded the following conclusions: (i) the order of decreasing stability of the PBDEs calculated in this study is in good agreement with the increasing rate of their photochemical degradation; (ii) the formations of lower brominated polybrominated dibenzofurans (PBDFs) instead of adequate congeners of PBDEs during the photolytic debromination of decabromodiphenyl ether (DeBDE) seemed to be thermodynamically favored; (iii) the debromination of PBDEs does not follow just one thermodynamic path, but is rather multidirectional, leading to a mixture of several congeners, the concentration of which is related to their thermodynamic stability. © 2007 Elsevier B.V. All rights reserved.

DOI
Solubilities of selected PCDDs and PCDFs in water and various chloride solutions

Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

Journal of Chemical and Engineering Data 52 ( 5 ) 1824 - 1829 2007.09 [Refereed]

Authorship：Lead author, Corresponding author

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The aqueous solubilities of selected polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), including their non-chlorinated compounds, were measured at 25 °C using the generator column method to prepare their saturated aqueous solutions. Newly measured aqueous solubility data are reported for 1,2,3,4,6,9-hexachlorodibenzo-p-dioxin and octachlorodibenzofuran. Additionally, changes in solubilities of dibenzo-p-dioxin, 2-monochlorodibenzo-p-dioxin, 2,7-dichlorodibenzo-p-dioxin, dibenzofuran, and 2,8-dichlorodibenzofuran were studied in sodium, potassium, and calcium chloride solutions at various concentrations of the individual salts. From the measured solubility data, the salinity parameters, known as the Setschenow constants, were derived for the selected PCDDs and PCDFs and are reported here for the first time. © 2007 American Chemical Society.

DOI
Fate of PCDD/PCDF during mechanical-biological sludge treatment

Sylwia Oleszek-Kudlak, Mariusz Grabda, Marianna Czaplicka, Czeslawa Rosik-Dulewska, Etsuro Shibata, Takashi Nakamura

Chemosphere 61 ( 3 ) 389 - 397 2005.10 [Refereed]

Authorship：Lead author, Corresponding author

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In this preliminary study the seventeen 2,3,7,8-substituted congeners of PCDD/PCDF were analyzed at the inlet and outlet water and for three sewage sludge samples taken from different treatment stages to check behaviours of PCDD/PCDF at a municipal wastewater treatment plant (MWTP) in Poland. At the inlet (untreated sewage) water dominated PCDD congeners, whereas in the outlet (treated water) dominated the PCDF congeners. The octaCDD, 1,2,3,4,6,7,8- heptaCDD/CDF and octaCDF congeners dominated in all of the sludge samples. The total toxicity load gradually increased in the series excess, digested and dewatered sludge and amounted to 12.2, 14.4 and 16.9 ng I-TEQ kg-1. © 2005 Elsevier Ltd. All rights reserved.

DOI PubMed
Application of the conductor-like screening model for real solvents for prediction of the aqueous solubility of chlorobenzenes depending on temperature and salinity

Sylwia Oleszek-Kudlak, Mariusz Grabda, Etsuro Shibata, Frank Eckert, Takashi Nakamura

Environmental Toxicology and Chemistry 24 ( 6 ) 1368 - 1375 2005.06 [Refereed]

Authorship：Lead author, Corresponding author

　View Summary

The conductor-like screening model for real solvents (COSMO-RS) is applied to the prediction of the aqueous solubility of chlorobenzenes (CBZs) in a liquid-liquid and liquid-solid equilibrium. The solubilities of CBZs at temperatures ranging from 5 to 60°C are reported, and the enthalpies of solution are derived from van't Hoff plots. The salting effect of 12 chlorobenzenes is determined for sodium, potassium, and calcium solutions at concentrations ranging from 0.01 to 3.5 mol/L. A new experimental aqueous solubility value is given for the isotopic labeled 1,2,4-trichlorobenzene determined at 25°C by the generator column procedure. The COSMO-RS method presented in this study can be useful to estimate the magnitude of the salt effect and temperature influence on the behavior of any chlorobezene under environmental conditions. © 2005 SETAC.

DOI PubMed
The effects of temperature and inorganic salts on the aqueous solubility of selected chlorobenzenes

Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura

Journal of Chemical and Engineering Data 49 ( 3 ) 570 - 575 2004.05 [Refereed]

Authorship：Lead author, Corresponding author

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The experimental results reported in this paper are the first in a wider research program aiming to test, in a laboratory, the behavior of selected hydrophobic compounds in an aqueous system. The generator column method was used to determine the solubility in water of biphenyl, 1,2-dichlorobenzene (1,2-DCBz), and hexachlorobenzene (HxCBz) at 25 °C. The solubilities of 1,2-DCBz and HxCBz were measured at temperatures ranging from 15 to 55 °C, and the enthalpies of solutions were derived from van't Hoff plots. The effects of three electrolytes on the solubility of HxCBz were determined at 25 °C, and their newly obtained Setschenow constants are reported.

DOI

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Books and Other Publications

Pollution Control Technologies Vol. II - Fundamentals of transport phenomena in combustion

Buekens A, Oleszek S( Part： Joint author)

Encyclopedia of Life Support System, Eolss Publishers 2005 ISBN: 9781848261174
Pollution Control Technologies Vol. II - Control of gaseous emissions

Buekens A, Schroyens K, Oleszek S( Part： Joint author)

Encyclopedia of Life Support System, Eolss Publishers 2005 ISBN: 9781848261174

Presentations

Microplastics in Botswana environmental samples.

Oleszek S., Mokgosi S.M., Dithlakanyane B.C., Gorata I., Gajaje K., Manyiwa T., Ultra V.U., Rantong G., Yoo Y., Oshita K., Takaoka M.

2nd Japan-Africa Hybrid Workshop on Promotion of Science, Engineering and Technology in Innovative Solutions to Environmental Problems in Metal Minning areas (JAPSET 2024), and Brazil-Japan Workshop on Biomass Conversion to Value-added Materials, December 9-10, Shibaura Institute of Technology, Atami, Japan.

Event date：
2024.12

　

　
Heavy metals and microplastics interactions: insights from batch experiments.

Japan-Africa Hybrid Workshop on, Promotion of Science, Engineering, Technology in Innovative Solutions to Environmental Problems in Metal Minning areas (JAPSET, Brazil-Japan Workshop, on, Biomass Converison to, Value-added Materials, December, Atami, Japan.

Event date：
2024.12

　

　
Study og pyrolysis characteristics of actual refuse to establish a pyrolysis gasification process for municipal solid waste (MSW).

Zhao W., Harada H., Oleszek S., Shiota K., Sakurai Y., Oshita Y., Takaoka M.

10th International Symposium on Energy from Biomass and Waste (Venice 2024), November 25-27, Venice, Italy.

Event date：
2024.11

　

　
Identification and abundance of microplastics in Botswana

S. Oleszek, S. M. Mokgosi, B. C. Ditlhakanyane, I. Gorata, K. Gajaje, T. Manyiwa, V. U, Ultra Jr, G. Rantong, Y. Yoo, K. Oshita, M. Takaoka

44th International Symposium on Halogenated Persistent Organic Pollutants (POPS), Dioxins 2024, 29 September-4 October, Singapore, 2024

Presentation date： 2024.10

Event date：
2024.09

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2024.10
Separation of PFOA with ionic liquid immobilized in polymer inclusion membrane.

M. Grabda, M. Matsumoto, S. Oleszek, Y. Tahara, M. Zawadzki, T. Nakano

44th International Symposium on Halogenated Persistent Organic Pollutants (POPS), Dioxins 2024, 29 September-4 October, Singapore, 2024

Presentation date： 2024.10

Event date：
2024.09

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2024.10
Waste plastic in freshwater system in Botswana.

Oleszek Sylwia [Invited]

US-Botswana Workshop on Water and Energy Needs by Remote, Austere Locations, WORTHWEEDS2024, July 22-25, Maun, Botswana.

Presentation date： 2024.07
Spatial distribution, fate, and source of microplastics in the water systems in Botswana.

Oleszek S [Invited]

Faculty of Science, University of Johannesburg, Johannesburg, South Africa.

Presentation date： 2024.04
From MACRO plastic to MICRO plastic waste. Plastic in surface water in Botswana: Potential threat to human health.

Oleszek S

Selibe-Phikwe Senior Secondary School, Selibe-Phikwe, Botswana.

Presentation date： 2024.04
Investigation of microplastics (MPs) - heavy metals (HMs) coexistence, mobility and their impact on quality of water and soil in Botswana.

Oleszek S

Symposium on Promoting Sustainable Mining Strategies Through Rapid Detection and Mitigation of Pollutants in Soil and Water, Palapye, Botswana

Presentation date： 2024.04
Impact of bromine flame retarded plastics on allocation and recovery of Cu in pyrolysis of e-waste

Oleszek S, Kumagai S, Grabda M, Shibata E, Nakamura T, Yoshioka T, Takaoka M [Invited]

Processs Metalurgy and Environmental Engineering: An EPD Symposium in Honor of Takashi Nakamura, Rare Metal Extraction & Processing, TMS2024 Annual Meeting and Exhibition, March 3-7, 2024, Orlando, Florida, US.

Event date：
2024.03

　

　
Smartphone-enabled turbidity measurements for environmental and medical monitoring in Africa.

Rozak H, Hidayat A.S, Oleszek S, Rzeznicka I

SETAC Africa 11th Biennial Conference, October 8-11, 2023, Accra, Ghana.

Event date：
2023.11

　

　
Microplastic and heavy metals interactions in aqueous solution: Batch experiment.

Oleszek S, Yoo J, Nomura M, Homma R, Oshita K, Takaoka M

International Symposium on Feedstock Recycling of Polymeric Materials (ISFR), November 6-8, 2023, Sendai, Japan.

Event date：
2023.11

　

　
Thermal degradation of epoxy resin with and without copper layer.

Oleszek S, Grabda M, Kumagai S, Yoshioka T, Takaoka M

International Symposium on Feedstock Recycling of Polymeric Materials (ISFR), November 6-8, 2023, Sendai, Japan.

Event date：
2023.11

　

　
Smartphone-enabled quantification of copper ions in water-solutions for communities living in the vicinity of heavy metals mining sites in Africa

Rozak H, Hidayat A.S, Promthong P, Oleszek S, Mokgosi S.M, Ultra V, Rzeznicka I

8th Asia Conference on Environment and Sustainable Development (ACESD), November 3-5, 2023, Sapporo, Japan.

Event date：
2023.11

　

　
Heavy metals and microplastics interactions: Insight from batch experiments.

Yoo J, Nomura M, Oleszek S, Homma R, Oshita K, Takaoka M

19th International Symposium on Waste Management and Sustainable Landfilling, October 9-13, 2023, Sardinia, Italy.

Event date：
2023.10

　

　
Spatial distribution, fate and source of microplastics in the water systems in Botswana.

Oleszek S, Mokgosi M, Ditlhakanyane C, Ishmael G, Gajaje K, Manyiwa T, Ultra V.U.Jr, Y oo J, Oshita K, Takaoka M

SETAC Africa 11th Biennial Conference, October 8-11, 2023, Accra, Ghana.

Event date：
2023.10

　

　
Microplastics (MPs) and heavy metals (HMs) coexistance, mobility, and the impact on water quality and soil.

Oleszek S

Workshop on sustainable Well-bing Through Rapid Detection, Remediation, and stakeholder Awareness of Contaminants in Environments Impacted by Mining Activities, Palapye, Botswana.

Presentation date： 2022.10

Event date：
2022.10

　

　
Evaluation of fossil derived carbon fixation in municipal solid waste carbonization.

Shinohara T, Oleszek S, Shimizu M, Shiota K, Oshita K, Kusakabe T, Takaoka M

33rd Meeting of Japan Society of Material Cycles and Waste Management, University of Miyazaki, September 20-22, 2022, Miyazaki, Japan.

Event date：
2022.09

　

　
Heavy metals and microplastics interactions: insight from batch experiments.

Yoo J., Nomura M., Oleszek S., Homma R., Oshita K., Takaoka M.
Aqueous solubility measurement for selected organohalogen compounds using a generator column.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ) Autumn Meeting, September 22-24, 2003, Ube, Japan.
Experimental and quantum chemical approaches for determining aqueous solubility of selected POPs depending on temperature and salinity.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

Abstract of 3rd Meeting of IMRAM, Tohoku University, December 12, 2003, Sendai, Japan.
Experimental and quantum chemical approaches for determining aqueous solubility of selected POPs depending on temperature and salinity.

Oleszek-Kudlak S

Japan-Korea International Workshop on Recycling and Waste Treatment, IMRAM, August 6, 2004, Sendai, Japan.
Measurement and prediction of the solubility behavior of selected POPs in the aqueous environment.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

International Mini symposium on Material Science and Technology, November 19, 2004, Sendai, Japan.
Generator column measurement and COSMO-RS prediction of aqueous solubility of PCDD/Fs.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ) Spring Meeting, March 29-31, 2004, Tokyo, Japan.
Preliminary study for determination of PCDD/Fs in the wastewater and sewage sludge samples from a single municipal WWTP.

Oleszek-Kudlak S, Grabda M, Rosik-Dulewska Cz, Shibata E, Nakamura T

Proceedings of the 15th Annual Conference of the Japan Society of Material Cycles and Waste Management, November 17-19, 2004, Takamatsu, Japan.
Calculation for physicochemical properties of POPs using COSMO-RS.

Shibata E, Oleszek-Kudlak S, Grabda M, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ) Tohoku Branch Meeting, October 28, 2005, Akita, Japan.
Theoretical and experimental investigations on bromination reactions of heavy metal oxides.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

The 5th Japan /Korea International Symposium on Material Science and Resources Recycling, December 20 – 22, 2007, Kitakyushu, Japan.
Bromination reactions of heavy metal oxides by SbBr3 and TBBPA.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

18th Annual Conference of the Japan Society and Waste Management Expert, November 19-21, 2007, Tsukuba, Japan
Fundamental study of bromination reactions of metal oxides by SbBr3 and TBBPA.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

7th Meeting of IMRAM, Tohoku University, December 12, 2007, Sendai, Japan.
Thermodynamic consideration on thermal recycling of waste plastics bearing brominated flame retardant.

Shibata E, Grabda M, Oleszek-Kudlak S, Nakamura T

The 9th International Symposium on East Asian Resources, Recycling Technology, EARTH2007, October 29 - November 2, 2007, Sendai, Japan.
Fundamental study of bromination reaction of metal oxide using DSC and TG/DTA.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ), Autumn Meeting, September 25 – 27, 2007, Nagoya, Japan.
Bromination of metallic oxide by SbBr3 and thermal degradation of TBBPA.

Grabda M, Oleszek-Kudlak S, Rzyman M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ), Spring Meeting, March 27-29, 2008, Tokyo, Japan
Bromination of Sb2O3 during thermal decomposition of TBBPA.

Rzyman M, Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ), Autumn Meeting, October 7 – 9, 2008, Sendai, Japan.
Reactivity of heavy metal oxides during thermal degradation of brominated flame retardants.

Shibata E, Oleszek-Kudlak S, Rzyman M, Grabda M, Nakamura T

Proceedings of the 19th Annual Conference of the Japan Society of Waste Management Experts, November 19-21, 2008, Kyoto, Japan.
Bromination of metallic oxides by hydrogen bromine gas from thermal decomposition of brominated flame retardant.

Oleszek-Kudlak S, Grabda M, Rzyman M, Shibata E, Nakamura T

8th Meeting of IMRAM, Tohoku University, December 11, 2008, Sendai, Japan.
Bromination of heavy metal oxide with thermal decomposition of brominated flame retardant.

Shibata E, Oleszek-Kudlak S, Grabda M, Rzyman M, Nakamura T

3rd International Symposium on Sustainable Materials Engineering. October 3, 2008, Sendai, Japan.
Kinetics studies on the bromination of ZnO by products of thermal decomposition of TBBPA.

Grabda M, Oleszek-Kudlak S, Rzyman M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ) Spring Meeting, March 26-28, 2009, Tokyo, Japan.
Effect of oxygen on bromination reaction of heavy metal oxides during thermal decomposition of TBBPA.

Oleszek-Kudlak S, Grabda M, Rzyman M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ) Spring Meeting, March 26-28, 2009, Tokyo, Japan.
Pyrolysis study of mixtures TBBPA with various metal oxides.

Oleszek-Kudlak S, Grabda M, Rzyman M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ), Autumn Meeting, September 8-10, 2009, Sapporo, Japan.
Thermal analysis of bromination reactions of heavy metals with degradation product of TBBPA.

Oleszek-Kudlak S, Rzyman M, Grabda M, Shibata E, Nakamura T

Proceedings of the 20th Annual Conference of the Japan Society of Material Cycles and Waste Management, September 17-19, 2009, Nagoya, Japan.
Mechanism of antimony bromide formation during thermal treatment of mixture TBBPA:Sb2O3.

Oleszek-Kudlak S, Grabda M, Rzyman M, Shibata E, Nakamura T

Second French Research Organizations-Tohoku University Joint Workshop on Frontier Materials, November 29 - December 3, 2009, Sendai, Japan.
Time and temperature effect on bromination of ZnO during thermal treatment of TBBPA under inert atmosphere and in presence of oxygen.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

Second French Research Organizations-Tohoku University Joint Workshop on Frontier Materials, November 29 - December 3, 2009, Sendai, Japan.
Pyrolysis of tetrabromobisphenol A in mixture with antimony oxide.

Grabda M, Oleszek-Kudlak S, Rzyman M, Shibata E, Nakamura T

9th Meeting of IMRAM, Tohoku University, December 10, 2009, Sendai, Japan.
Kinetics of bromination of ZnO during thermal treatment of TBBPA under inert atmosphere and in presence of oxygen.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

9th Meeting of IMRAM, Tohoku University, December 10, 2009, Sendai, Japan.
Bromination mechanism of PbO during thermal treatment with brominated flame retardant.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ), Autumn Meeting, September 13-15, 2010, Fukuoka, Japan.
Kinetics of vaporization of ZnO during thermal treatment of TBBPA under various atmospheres.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

Abstract of 10th Meeting of IMRAM, Tohoku University, Sendai, Japan, 2010,
Recovery of copper during thermal treatment of E-waste.

Oleszek S, Grabda M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan. Spring meeting. Tohoku branch, June 24, 2011, Sendai, Japan.
Bromination-evaporation of zinc and lead during thermal treatment of EAFD with TBBPA.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ), Autumn Meeting, September 26-29, 2011, Osaka, Japan.
Studies on bromination of copper and precious metals during thermal treatment with tetrabromobisphenol A and tetrabromobisphenol A based flame retardant.

Oleszek-Kudlak S, G rabda M, Shibata E, Nakamura T

The Mining and Materials Processing Institute of Japan (MMIJ), Autumn Meeting, September 26-29, 2011, Osaka, Japan.
Influence of Sb, Pb and Fe oxides on thermal degradation of TBBPA. Thermogravimetric studies on recovery of the metal bromides.

Oleszek S, Grabda M, Shibata E, Nakamura T

International Workshop on Recycling Technology of Critical Elements, November 12, 2013, Sendai, Japan.
Influence of the metal oxides on thermal degradation of tetrabromobishenol A. Recovery of the formed metal bromides.

Oleszek S, Grabda M, Shibata E, Nakamura T

Research Association for Feedstock Recycling of Plastics (FSRJ) September 11-12, 2014, Nagoya, Japan.
Distribution of bromine and selected metals during co-combustion of polycarbonate and high-impact polystyrene wastes with metallurgical dust.

Oleszek S, Grabda M, Shibata E, Nakamura T

5th Symposium of Tohoku Innovative Materials Technology Initiatives for Reconstruction, January 19, 2017, Shinagawa Prince Hotel, Tokyo, Japan.
Removal of POPs from polluted water – a review.

Grabda M, Oleszek S, Nwodo A.N

Annual Meeting of Kyushu Branch, Japan Society of Material Cycles and Waste Management, May 19, 2018, Fukuoka University, Fukuoka, Japan.
Magnetic Refrigerants and Magnetocaloric Effect for Room Temperature Application: Future Perspectives.

Nwodo A.N, Oleszek S

Annual Meeting of Kyushu Branch, Japan Society of Material Cycles and Waste Management, May 19, 2018, Fukuoka University, Fukuoka, Japan.
Separation of POPs with novel extractions solvents - limitations and possibilities.

Grabda M, Oleszek S, Tokoro Ch, Nakamura T

The Society of Chemical Engineers (SCEJ) 50th Autumn Meeting, September 18-20, 2018, Kagoshima University, Kagoshima, Japan.
Unconventional waste management approach: waste plastics conversion into advanced carbonaceous materials.

Oleszek S, Grabda M, Nakamura T

The Society of Chemical Engineers (SCEJ) 50th Autumn Meeting, September 18-20, 2018, Kagoshima University, Kagoshima, Japan.
Thermal recycling of bromine - flame retarded plastic waste.

Oleszek S

Symposium of the Association of Kyoto University Environmental and Sanitary Engineering Research, July 30-31, 2021, Kyoto University, Kyoto, Japan.
Distribution of trace heavy metals in Chinese coalfield and recovery of valuable metals from coal ash.

Cao Q, Liu Y, Oleszek S, Takaoka M

Japan-Africa Hybrid Workshop for Promotion of Science, Engineering, and Technology in Innovative Solutions to Environmental Problems in Metal Mining Area, December 14-16, 2023, Katsura Campus, Kyoto University, Kyoto, Japan.
Evaluation of fossil-derived carbon fixation in municipal soild waste carbonization.

Shinohara T, Oleszek S, Shimizu M, Shiota K, Oshita K, Takaoka M

Japan-Africa Hybrid Workshop for Promotion of Science, Engineering, and Technology in Innovative Solutions to Environmental Problems in Metal Mining Area, December 14-16, 2023, Katsura Campus, Kyoto University, Kyoto, Japan.
Microplastics sources, distribution, and effect on soil and water quality in agricultural areas.

Nomura M, Oleszek S, Ultra V.U.Jr, Grabda M, Oshita K, Takaoka M

Japan-Africa Hybrid Workshop for Promotion of Science, Engineering, and Technology in Innovative Solutions to Environmental Problems in Metal Mining Area, December 14-16, 2023, Katsura Campus, Kyoto University, Kyoto, Japan.
The batch experiment on adsorption of heavy metal to microplastics.

Nomura M, Oleszek S, Homma R, Oshita K, Takaoka M

The 57th Annual Conference of Japan Society on Water Environment, March 15-17, 2023, Ehime University, Ehime, Japan.
Basic research of pyrolysis characteristics of municipal solid waste fir advanced waste utilization.

Zhao W, Harada H, Oleszek S, Shiota K, Takaoka M

34th Annual Conference of the Japan Society of Material Cycles and Waste Management (JSMCWM), September 11-13, 2023, Osaka Institute of Technology, Osaka, Japan.
Sorption of POPs on particles suspended in water - measuring aqueous solubility of selected organic compounds using a generator column.

Oleszek-Kudlak S, Shibata E, Nakamura T, Buekens A

23rd International Symposium on Halogenated Environmental Organic Pollutants and POPs, August 24-29, 2003, Boston, Massachusetts, US.
Prediction of water solubilities for selected PCDDs/PCDFs with COSMO-RS model.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T, Rosik-Dulewska Cz

24th International Symposium on Halogenated Environmental Organic Pollutants and POPs, September 6-10, 2004, Berlin, Germany.
Measurements of enthalpies of fusion and melting temperatures for 27 polychlorinated dibenzo-p-dioxins and dibenzofurans.

Oleszek-Kudlak S, Li X.-W, Grabda M, Shibata E, Nakamura T

25th International Symposium on Halogenated Environmental Organic Pollutants and POPs, August 21-26, 2005, Toronto, Canada.
Quantum chemical approach for prediction of the solubility behavior of selected POPs in the aqueous environment.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

SETAC Asia/Pacific 2006. Growth with a Limit: The Integration of Ecosystem Protection for Human Health Benefits, September 18-20, 2006, Beijing, China.
Density Function Theory (DFT) calculations of thermodynamic properties of PCDD/F in the gas phase.

Oleszek-Kudlak S, Li X, Grabda M, Yu Y, Shibata E, Dong X, Nakamura T

SETAC Asia/Pacific 2006. Growth with a Limit: The Integration of Ecosystem Protection for Human Health Benefits, September 18-20, 2006, Beijing, China.
Prediction of thermodynamic properties of 75 PCDD and 135 PCDF in the gas phase using a density functional method.

Oleszek-Kudlak S, Yu Y, Li X, Dong X, Buekens A

Proceedings of the Second Baosteel Biennial Academic Conference: Technology Innovation and Circular Economy, Baosteel Research Institute, May 25-26, 2006, Shanghai, China.
Theoretical calculations of thermodynamic properties of brominated flame retardants.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

26th International Symposium on Halogenated Environmental Organic Pollutants and POPs, August 21-25, 2006, Oslo, Norway.
Effect of inorganic salts on solubility of selected dibenzo-p-dioxins and dibenzofurans.

Oleszek-Kudlak S, Shibata E, Nakamura T, Li X

26th International Symposium on Halogenated Environmental Organic Pollutants and POPs, August 21-25, 2006, Oslo, Norway.
Debromination of TBBPA by thermal treatment with heavy metal oxides.

Oleszek-Kudlak S, Grabda M, Rzyman M, Shibata E, Nakamura T

5th SETAC World Congress, August 3-7, 2008, Sydney, Australia.
Studies on bromination and volatile separation of metallic oxides by gaseous products from thermal decomposition of TBBPA.

Grabda M, Oleszek-Kudlak S, Rzyman M, Shibata E, Nakamura T

Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008, October 12-15, 2008, Cancun, Mexico.
Studies on bromination reaction of heavy metal oxides by SbBr3 and TBBPA with thermal methods.

Oleszek-Kudlak S, Grabda M, Rzyman M, Shibata E, Nakamura T

Global Symposium on Recycling, Waste Treatment, and Clean Technology, REWAS 2008, October 12-15, 2008, Cancun, Mexico.
Bromination of ZnO during thermal treatment of TBBPA – effect of temperature and time.

Grabda M, Oleszek-Kudlak S, Rzyman M, Shibata E, Nakamura T

Sustainability Through Resource Conservation and Recycling, April 4-5, 2009, Cape Town, South Africa.
Bromination of heavy metal oxides during thermal decomposition of tetrabromobisphenol A.

Oleszek-Kudlak S, Grabda M, Rzyman M, Shibata E, Nakamura T

Sustainability through Resource Conservation and Recycling, April 4-5, 2009, Cape Town, South Africa.
Bromination and evaporation of antimony oxide during thermal decomposition of TBBPA.

Rzyman M, Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

Proceedings of the 10th International Symposium on East Asian Resources Recycling Technology (EARTH 2009). November 2-6, 2009, Jejudo, Korea.
Kinetics of bromination of ZnO during thermal treatment of TBBPA and vaporization of formed products under inert atmosphere and in presence of oxygen.

Oleszek-Kudlak S, Grabda M, Shibata E, Rzyman M, Nakamura T

Proceedings of the 10th International Symposium on East Asian Resources Recycling Technology (EARTH 2009). Jejudo, Korea, November 2-6, 2009, pp. 598-601.
Initial studies on possibility of simultaneous recycling BFR-containing waste plastics with EAF dust.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

The 5th International Symposium on Brominated Flame Retardants “BFR Kyoto 2010”, April 7-9, 2010, Kyoto, Japan.
Tetrabromobisphenol A as a brominating agent for heavy metal oxides.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

The 5th International Symposium on Brominated Flame Retardants “BFR Kyoto 2010”, April 7-9, 2010, Kyoto, Japan
Utilization of BFR plastics in recovery of valuable metals during thermal treatment with solid wastes.

Oleszek-Kudlak S, Grabda M, Shibata E, Nakamura T

Waste-to-Energy Research & Technology Council (WTERT), Bi-Annual Meeting at Columbia University, October 7-8, 2010, New York City, US.
Pyrometallurgical recycling of EAF dust using plastic waste containing TBBPA.

Grabda M, Oleszek-Kudlak S, Shibata E, Nakamura T

European Metallurgical Conference (EMC 2011), June 26-29, 2011, Dusseldorf, Germany.
Studies on behavior of copper during thermal treatment of E-waste.

Oleszek S, Grabda M, Shibata E, Nakamura T

International Conference on Waste Recycling, Ecology and Environment (2011 IEEE), October 15-21, 2011, Mianyang, Sichuan, China.
Separation of zinc and lead from EAF dust by bromination-evaporation process.

Grabda M, Oleszek S, Shibata E, Nakamura T

11th International Symposium on East Asia Resources Recycling Technology (EARTH, 2011), October 31-November 4, 2011, Kaohsiung, Taiwan.
Fate of copper and silver during thermal treatment of E-waste.

Grabda M, Oleszek S, Shibata E, Nakamura T

4th International Conference on Engineering for Waste and Biomass Valorization, September 10-13, 2012, Porto, Portugal.
Study on behavior of antimony, zinc, lead, and iron oxides during thermal processing of BFR-containing waste plastics with using a laboratory furnace.

Grabda M, Oleszek S, Shibata E, Nakamura T

7th International Symposium on Feedstock Recycling of Polymeric Materials (7th ISFR), October 23-26, 2013, New Delhi, India.
Influence of Sb, Pb and Fe oxides on thermal degradation of tetrabromobisphenol A (TBBPA). Thermogravimetric studies on recovery of the metal bromides.

Oleszek S, Grabda M, Shibata E, Nakamura T

7th International Symposium on Feedstock Recycling of Polymeric Materials (7th ISFR), October 23-26, 2013, New Delhi, India.
Behaviors of antimony oxide, copper, and silver during the thermal decomposition of brominated flame retardants.

Shibata E, Oleszek S, Grabda M, Rzyman M, Nakamura T

Proceedings of Copper 2013, Downstream Fabrication and Applications/Recycling and Waste Management, December 1-4, 2013, Santiago, Chile
Application of COSMO-RS computations for prediction of optimal ionic liquids extraction solvents for rare earth elements.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Shibata E, Nakamura T

2nd International Conference on Ionic Liquids in Separation and Purification Technology (ILSEPT), June 29-July 2, 2014, Toronto, Canada.
Study on simultaneous recycling of waste plastics and metals-rich metallurgical dusts.

Oleszek S, Grabda M, Shibata E, Nakamura T

5th International Conference on Engineering for Waste and Biomass Valorization, August 25-28, 2014, Rio de Janeiro, Brazil
Ionic liquid extraction solvents for rare earth elements from industrial scraps: Theoretical considerations.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Shibata E, Nakamura T

5th International Conference on Engineering for Waste and Biomass Valorization, August 25-28, 2014, Rio de Janeiro, Brazil.
Prediction of effective ionic liquids extraction solvents by COSMO-RS.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Shibata E, Nakamura T

4th Asia-Pacific Conference on Ionic Liquids and Green Processes / 6th Australasian Symposium on Ionic Liquids (APCIL-4/ASIL-6 2014), September 28-October 1, 2014, Sydney, Australia.
Application of TBBPA-containing waste plastics in energy-efficient recycling of metallurgical dust.

Oleszek S, Grabda M, Shibata E, Nakamura T

5th International Symposium on Energy from Biomass and Waste, November 17-20, 2014, San Servolo, Venice, Italy.
Recycling of EAF dust with plastics.

Grabda M, Oleszek S, Shibata E, Nakamura T

European Metallurgical Conference (EMC 2015), June 14-17, 2015, Dusseldorf, Germany.
Predictive model for ionic liquid extraction solvents for rare earth elements.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Eckert F, Shibata E, Nakamura T

11th International Conference of Computational Methods in Sciences and Engineering (ICCMSE 2015), March 20-23, 2015, Athens, Greece.
Theoretical selection of ionic liquids for L-L extraction of Nd and Dy.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Eckert F, Shibata E, Nakamura T

Critical Metal Symposium in Sendai, October 28-30, 2015, Sendai, Japan.
Theoretical preselection of ionic liquids for liquid-liquid extraction of Neodymium.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Eckert F, Shibata E, Nakamura T

X Ibero-American Conference on Phase Equilibria and Fluid Properties for process Design (EQUIFASE 2015), June 28-July 1, 2015, Alicante, Spain.
Extraction of Neodymium from the aqueous phase to preselected ionic liquids – insights from quantum chemical calculations.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Eckert F, Shibata E, Nakamura T

Ibero-American Meeting on Ionic Liquids 2015 (IMIL 2015), July 2-3, 2015, Madrid, Spain.
Screening of ionic liquids for the extraction of Neodymium and Dysprosium in aqueous solutions.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Eckert F, Shibata E, Nakamura T

The 4th Korea-Japan rare Metal Workshop, September 3, 2015, Sendai, Japan.
A predictive model for ionic liquid extraction solvents for rare earth elements.

Grabda M, Oleszek S, Panigrahi M, Kozak D, Eckert F, Shibata E, Nakamura T

AIP Conference Proceedings 1702, 2016, 190004.
Recycling of EAF dusts with BFR flame-retarded waste plastics

Oleszek S, Grabda M, Shibata E, Nakamura T

2nd International Conference on Green Chemistry and Sustainable Engineering (ICGCSE 2016), August 20-22, 2016, Rome, Italy.
Separation of zinc and lead from EAF dusts by co-incineration with BFR-containing waste plastics.

Grabda M, Oleszek S, Shibata E, Nakamura T

XI International Symposium on Recycling Technologies and Sustainable Development (RT and SD 2016), November 2-4, 2016, Bor, Serbia.
Copper distribution during pyrolysis of FR-4 laminates.

Oleszek S, Grabda M, Shibata E, Nakamura T

The 28th Annual Conference of Japan Society of Material Cycles and Waste Management, Tokyo Institute of Technology, September 6-8, 2017, Tokyo, Japan.
Pyrolysis of plastic wastes for the synthesis of valuable carbon material.

Oleszek S, Grabda M, Shibata E, Nakamura T, Buekens A

Gender summit 10-Satelite Conference in Okinawa, Okinawa Institute of Science and Technology, May 29-30, 2017, Okinawa, Japan.
Upcycling of e-waste plastics containing brominated flame retardants into valuable carbon material.

Oleszek S, Grabda M, Nakamura T, Buekens A

The First International Multi-Conference on Advances in Science and Engineering Technology, ASET’2018, Higher Colleges of Technology, HCT-Dubai Men’s, February 6-7, 2018, Dubai, UAE.
Pyrolytic gases of selected e-waste plastics as a feedstock for the generation of the value-added carbon materials.

Oleszek S, Grabda M, Nakamura T

22nd International Symposium on Analytical and Applied Pyrolysis (Pyro2018), Kyoto University, June 3-8, 2018, Kyoto, Japan.
Distribution of liquid and gaseous products during pyrolysis of brominated flame retarded polycarbonate: Effect of copper.

Oleszek S, Kumagai S, Grabda M, Yoshioka T

22th International Symposium on Analytical and Applied Pyrolysis (Pyro2018), Kyoto University, June 3-8, 2018, Kyoto, Japan.
Can ionic liquids be applied for efficient removal of POPs?

Grabda M, Oleszek S, Tokoro Ch, Nakamura T

XI Iberoamerican Conference on Phase Equilibria and Fluid Properties for Process Design (EQIFASE 2018), October 22-25, 2018, Cordoba, Argentina
Recycling of metallurgical dust with plastic wastes.

Grabda M, Oleszek S

The 7th Baosteel Biennial Academic Conference (BAC 2018): Baosteel Research Institute, October 30-31, 2018, Shanghai, China.
Plastic wastes in the iron and steel sector.

Oleszek S, Grabda M [Invited]

The 7th Baosteel Biennial Academic Conference (BAC 2018): Baosteel Research Institute, October 30-31, 2018, Shanghai, China.
Removal of PFASs from water with ionic liquids: Quantum-mechanical and experimental studies.

Grabda M, Oleszek S

The 2nd International Multi-Conference on Advances in Science and Engineering Technology, ASET’2019, Higher Colleges of Technology, HCT-Dubai Men’s, March 26-28, 2019, Dubai, UAE
A synthesis of vitreous carbon from bromine flame retarded high impact polystyrene.

Oleszek S, Grabda M, Nwodo A, Nakamura T, Buekens A

The 2nd International Multi-Conference on Advances in Science and Engineering Technology, ASET’2019, Higher Colleges of Technology, HCT-Dubai Men’s, March 26-28, 2019, Dubai, UAE
Initial studies on extraction of PFAS from water by theoretically pre-selected ionic liquids.

Grabda M, Matsumoto M, Oleszek S

39th International Symposium on Halogenated Persistent Organic Pollutants, August 25-30, 2019, Kyoto, Japan
Distribution of organo-bromine products during pyrolysis of glass-reinforced epoxy resin (FR-4).

Oleszek S, Kumagai S, Grabda M, Yoshioka T, Takaoka M

39th International Symposium on Halogenated Persistent Organic Pollutants, August 25-30, 2019, Kyoto, Japan.
Theoretical identification of ionic liquids for removal of per- and polyfluoroalkyl substances.

Grabda M, Oleszek S, Matsumoto M

ILSEPT - 4th International Conference on Ionic Liquids in Separation and Purification Technology, September 8-11, 2019, Sitges, Spain.
Utilization of plastic wastes from electrical and electronic equipment (e-waste).

Oleszek S, Grabda M, Nakamura T, Takaoka M [Invited]

The 2nd International Conference & Expo on Recycling, October 7-8, Osaka, Japan.
Effect of sewage sludge incinerator type on heavy metals distribution.

Cheng Y, Oleszek S, Shiota K, Oshita K, Takaoka M

The 3rd International Scientific Conference on Material Cycles and Waste Management, March 16-18, Tsukuba, Japan.
Production of pyrolytic liquid with low bromo-organic content from pyrolysis of polycarbonate based tetrabromobishenol A.

Oleszek S, Kumagai S, Grabda M, Yoshioka T, Takaoka M

The 3rd International Scientific Conference on Material Cycles and Waste Management, March 16-18, Tsukuba, Japan.
Suitability of ionic liquids for removal of PFOA and PFOS from water.

Grabda M, Zawadzki M, Oleszek S

The 6th Ibero-American Meeting on Ionic Liquids (IMIL 2021), May 24-26, Santiago de Chile, Chile.
Extraction of PFAS from water using ionic liquid selected by COSMO-RS.

Grabda M, Zawadzki M, Matsumoto M, Krolikowski M, Oleszek S

6th Green and Sustainable Chemistry Conference, November 16-18, 2021.
Emission behaviors of microplastics in wastewater from a municipal solid waste treatment plant and landfill sites.

Kawai T, Oshita K, Kusakabe T, Oleszek S, Shuhei T, Takaoka M, Fujiwara T

33th Symposium of the Society of Environmental Instrumentaion Control and Automation (EICA), October 20, 2021.
Crop-residue utilization: Production of growing media and recovery of metals.

Satoshi A, Takaoka M, Oleszek S

24th Symposium of Japan Society and Water Environment (JSWE), September 14-15, 2021.
Co-pyrolysis of spent tea leaves with plastic waste.

Oleszek S, Czegeny Z, Czirok I.S, Shinohara T, Shiota K, Grabda M, Oshita K, Takaoka M

International Symposium on Feedstock Recycling of Polymeric Materials (e-ISFR), November 29-30, 2021
Investigation of char generated during pyrolysis of separated and mixed plastic and biomass wastes.

Oleszek S, Czegeny Zs, Shinohara T, Shiota K, Grabda M, Takaoka M

6th Green and Sustainable Chemistry Conference, November 16-18, 2021.
COSMO-RS Screening of ionic liquids for perfluorooctanic acid.

Grabda M, Oleszek S

Oman’s International conference on Water Engineering and Management of Water Resources, Sultanate of Oman, 2021.11.9-11.
Extraction of soluble manganese and potassium from selected biomass waste.

Oleszek S, Shiota K, Chen M, Takaoka M

The 8th 3R International Scientific Conference on Material Cycles and Waste Management (3RINCs), March 14-18, 2022, Japan.
Efficient separation and extraction of K and Mn from biomass ash.

Oleszek S, Shiota K, Chen M, Takaoka M

11th IWA International Symposium on Waste Management Problems in Agro-Industry, October 26-28, 2022, Gdansk, Poland.
Environmental threats from microplastics in the agricultural area: A review.

Oleszek S, Ultra V.U, Grabda M, Takaoka M

11th IWA International Symposium on Waste Management Problems in Agro-Industry, October 26-28, 2022, Gdansk, Poland.

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Research Projects

Well-Being Through Rapid Pollutant Detection, Remediation, and Stakeholder Recognition in Environments Affected by Mining Activities

Japan Science and Technology Agency Promotion of international joint research in science and technology SICORP AJ-CORE International Joint Research in Science and Technology

Project Year :

2022.04

-

2024

Rzeznicka Izabela, Oleszek Sylwia, Vestergaard Mundelanji
Carbon capture and storage through pyrolysis of municipal wastes and application of the pyrolysis char as a soil amendment

Kyoto University Educational Research Foundation

Project Year :

2021.04

-

2022.03

Oleszek Sylwia
Recycling of e― waste plastics containing brominated flame retardants

Yonemori Foundation, Kagoshima

Project Year :

2016.05

-

2018.03

Oleszek Sylwia
Research on recycling heavy metal-containing sludge using thermal decomposition of brominated flame-retardant plastics

Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Research Fellows

Project Year :

2007.11

-

2009.10

Oleszek-Kudlak Sylwia, Nakamura Takashi
Measurement and prediction of the solubility behavior of selected POPs in the aqueous environment

Ministry of Education, Culture, Sports, Science and Technology, Japan

Project Year :

2001

-

2004

Oleszek-Kudlak Sylwia, Nakamura Takashi
Dioxins in municipal sewage slugde as criteria of their non-industrial using.

Polish State Committee for Scientific Research

Project Year :

2000.09

-

2001.10

Oleszek Sylwia

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Misc

水溶液中における重金属とマイクロプラスチックの相互作用

YOO Junyeong, 野村正明, 大下和徹, 高岡昌輝, OLESZEK Sylwia

廃棄物資源循環学会研究発表会講演集(Web) 35th 2024

J-GLOBAL
都市環境工学専攻環境デザイン工学講座・脱炭素工学研究講座(産学共同講座)の研究紹介

高岡昌輝, 大下和徹, 日下部武敏, 原田浩希, Sylwia Oleszek

明日の食品産業 = Food industry for tomorrow 2023 ( 4 ) 31 - 35 2023.04
特集記事産学共同講座「脱炭素工学研究講座」のご紹介

高岡昌輝, 原田浩希, Sylwia Oleszek

環境衛生工学研究 = Environmental & sanitary engineering research : 京都大学環境衛生工学研究会機関誌 36 ( 2 ) 9 - 15 2022.06
Emission behaviors of Microplastics in Wastewater from a Municipal Solid Waste Treatment Plant and Landfill Sites

河合泰志, 大下和徹, 日下部武敏, OLESZEK Sylwia, 田中周平, 高岡昌輝, 藤原拓

EICA 26 ( 2/3 ) 2021

J-GLOBAL
Per- And polyfluoroalkyl substances: Problematic emerging pollutants of aquatic environment

Mariusz Grabda, Sylwia Oleszek, Michiaki Matsumoto

Archives of Environmental Protection 46 ( 3 ) 3 - 21 2020

Book review, literature introduction, etc.

　View Summary

Per- and polyfluoroalkyl substances (PFASs) are human-invented chemicals that were created in the middle of the 20th century. They were synthesized for the first time in 1949, and because of their exceptional surfactant properties, they have been widely used in many industrial applications and daily life products. The common use of PFASs resulted in their worldwide dissemination in natural environment. PFASs are reported to be ubiquitous in surface and drinking waters, but also may be present in soils, animals, milk and milk-products, plants, food. Contaminated drinking water and food are the most significant exposure sources to these chemicals. Ingested PFASs are bio-accumulative and have adverse effect on health of humans as well as animal organisms. This paper reviews the most significant information on the origin, properties, distribution, environmental fate, human exposure, health effects, and the environmental regulations on PFASs and summarizes the latest advances in the development of novel methods for the effective removal of these chemicals from the aqueous environment. Recognized (reverse osmosis, adsorption on activated carbon) and most promising developing removal methods such as adsorption on biomaterials (plant proteins, chitosan beds), mineral adsorbents (LDHs, hydrotalcite), ion-exchange resins, and photocatalytic degradation have been emphasized.

DOI
Review of the sampling and pretreatment methods for dioxins determination in solids, liquids and gases

Sylwia Oleszek-Kudlak, Etsuro Shibata, Takashi Nakamura, Xian Wei Li, Yong Mei Yu, Xiao Dan Dong

Journal of the Chinese Chemical Society 54 ( 2 ) 245 - 262 2007

Book review, literature introduction, etc.

　View Summary

The analytical requirements for the determination of dioxins (e.g. PCDD, PCDF) are unique in comparison with those for other routinely monitored chemicals: dioxins are measured in parts per trillion (ppt) and lower levels in technical and environmental samples, whereas other organics are measured in parts per million (ppm) or parts per billion (ppb). The ultra-trace analysis of dioxins requires a high sample enrichment obtainable by the use of efficient extraction methods and highly selective purification/fractionation techniques. Furthermore, highly sensitive equipment (e.g. high resolution gas chromatography - HRGC) with detection levels in the ppt range must be used to isolate and separate a huge number of dioxin congeners. The quantification of the dioxins by a high resolution mass detector (HRMS) requires the use of internal and labeled standards. This paper reviews and compares the classic and modern pretreatment methods, namely extraction and clean-up, that are currently used in dioxin analysis in industrial samples and that were improved or developed in the last 25 years. In addition, the standard methods for dioxin sampling from an emission source (flue or stack gas) are examined and compared with new, automated techniques.

DOI

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Industrial Property Rights

Removal of perfluoroalkyl substances, PFOA/PFOS from contaminated water with using of ionic liquid (IL). Methods of the new IL synthesis, application and its regeneration

Grabda Mariusz, Zawadzki Maciej, Oleszek Sylwia

Rights holder： Military University of Land forces, Poland

Patent
Complex method of metal recovery from EAF dust in the process of thermal treatment of metals with plastic waste containing brominated flame retardants (BFR) i.e., so-called e-waste electronic waste

Pat. 227662

Oleszek Sylwia, Grabda Mariusz, Shibata Etsuro, Nakamura Takashi

Rights holder： Institute of Environmental Engineering, Polish Academy of Sciences, Poland

Patent

Teaching Experience

Plastic waste recycling methods

Kyoto University, Graduate School of Engineering, Kyoto, Japan.
2020

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Now
Invited Lecture: 3R Initiatives to reduce plastic pollution.

University of Johannesburg,Department of Chemical Sciences, Johannesburg, South Africa.
2023.05

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Invited lecture: Properties, application and recycling methods of polymeric materials.

Waseda University,Faculty of Science and Engineering, Tokyo, Japan.
2021.10

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Invited lecture: Plastic utilization in agriculture

Kagoshima University, Faculty of Agriculture, Kagoshima, Japan.
2020.11

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Invited lecture: Plastic: generation, environmental distribution, and recycling.

Shibaura Institute of Technology, Tokyo, Japan.
2020.07

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Invited lecture: Plastic waste conversion to value-added carbon.

JiaoTong University, School of Materials Science and Engineering, Shanghai, China.
2018.11

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Invited lecture: Recycling of metal in thermal treatment of plastic waste with metallurgical dust.

Indian Institute of Technology (Banaras Hindu University), Varanasi, India
2013.10

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Invited lecture: Thermal treatment of solid wastes towards copper recovery.

Central South University of Technology, Changsha, China.
2011.10

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Social Activities

Sakura Science Exchange Program, JST

2023.09

Academic Activities

2nd Japan-Africa Hybrid Workshop on Promotion of Science, Engineering and Technology in Innovative Solutions to Environmental Problems in Metal Minning areas (JAPSET 2024), and Brazil-Japan Workshop on Biomass Conversion to Value-added Materials, December 9-10, Shibaura Institute of Technology, Atami, Japan.

2024.12

　

　
SETAC Africa 11th Biennial Conference, Accra, Ghana

Academic society, research group, etc.

SETAC

2023.10

　

　
Sakura Science Exchange Program (Course C)

Other

Japan Science and Technology Agency

2023.09

　

　
Japan-Botswana Research Knowledge Exchange Workshop

Competition, symposium, etc.

2023.09

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Master Thesis: Occurrence and distribution of microplastics in major water bodies in Botswana

Scientific advice/Review

2023.05

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EU Research and Innovation Program, HORIZON 2020 in the methods to remove hazardous substances from secondary raw materials

Scientific advice/Review

2023.03

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9th 3R International Scientific Conference on Material Cycles and Waste Management

2023

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International Congress on Energy Chemistry and Engineering (ICECE-2022)

Competition, symposium, etc.

2022

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Japan-Africa Hybrid Workshop on Promotion of Science, Engineering, and Technology in Innovative Solutions to Environmental Problems in Metal Mining Area

Competition, symposium, etc.

Kyoto University

2022

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