Updated on 2024/07/18

写真a

 
CORDOVA UDAETA, Edwin Mauricio
 
Affiliation
Faculty of Science and Engineering, Waseda Research Institute for Science and Engineering
Job title
Junior Researcher(Assistant Professor)
 

Papers

  • Insights on the Mechanism of Manganese Oxide Precipitation from Mn 2+ Solutions Using NaClO Under Highly Acidic Conditions, via Experimental Observations and Numerical Fitting of the Kinetic ODE System

    Mauricio Córdova-Udaeta, Bowen Cheng, Shigeshi Fuchida, Yutaro Takaya, Keishi Oyama, Chiharu Tokoro

    Journal of Chemical Engineering of Japan   57 ( 1 )  2024.06

    DOI

  • Simple and efficient selective extraction of lithium from spent ternary lithium-ion batteries via oxidation/de-lithiation using NaClO

    Yanhui Kong, Yutaro Takaya, Mauricio Córdova-Udaeta, Chiharu Tokoro

    Separation and Purification Technology   322   124280 - 124280  2023.10  [Refereed]

    DOI

    Scopus

    5
    Citation
    (Scopus)
  • Waste-Based Ceramsite for the Efficient Removal of Ciprofloxacin in Aqueous Solutions

    Juan Qin, Yeting Fang, Jian Shi, Chiharu Tokoro, Mauricio Córdova-Udaeta, Keishi Oyama, Juncheng Zhang

    International Journal of Environmental Research and Public Health   20 ( 6 ) 5042 - 5042  2023.03

     View Summary

    Ciprofloxacin (CIP), a compound with bioaccumulation toxicity and antibiotic resistance, is frequently detected in water at alarming concentrations, which is becoming an increasing concern. In this study, a low-cost ceramsite was developed from industrial solid wastes through sintering to remove CIP from wastewater. The effects of adsorbent dosage, initial pH, contact time, initial CIP concentration, and temperature were explored. More than 99% of CIP (20–60 mg/L) was removed at around pH 2–4 by the ceramsite. The kinetic data fitted well with the pseudo-second-order model, revealing that chemisorption was the main rate-determining step. The isotherm data was better described by the Freundlich model, suggesting that CIP was removed by the formation of multiple layers on the heterogeneous surface. Moreover, the removal efficiency was practically higher than 95% during five regeneration cycles, when different regeneration methods were used, including calcination, HCl, and NaOH washing, indicating that the ceramsite exhibited outstanding reusability in removing CIP. The primary mechanism of CIP removal by the ceramsite was found to be the synergism of adsorption and flocculation, both of which depended on the release of Ca2+ from the ceramsite. In addition, strong Ca-CIP complexes could be formed through surface complexation and metal cation bridging between Ca2+ and different functional groups in CIP.

    DOI

    Scopus

  • Highly Efficient Cd2+ Removal Using Tobermorite with pH Self-Adjustment Ability from Aqueous Solution

    Juan Qin, Sujuan Yuan, Mauricio Córdova-Udaeta, Keishi Oyama, Chiharu Tokoro

    Materials   16 ( 3 ) 1314 - 1314  2023.02

     View Summary

    Cadmium (Cd), as a type of heavy metal, can increase the incidence of many diseases, even in low concentrations. In this study, tobermorite was hydrothermally synthesized and then applied to adsorb Cd2+ from an aqueous solution. The physicochemical characteristics of the synthesized tobermorite were detected, and the results indicated that the well-crystallized tobermorite had a lot of mesopores and a large specific surface area of 140.92 m2/g. It acquired a pH self-adjustment ability via spontaneously releasing Ca2+ and OH- into the aqueous solution. The effects of different factors on Cd2+ removal were investigated. For Cd2+, the removal efficiency could reach 99.71% and the maximum adsorption capacity was 39.18 mg/g using tobermorite. The adsorption data was best fitted with the pseudo-second-order kinetic and Langmuir isotherm models. In addition, there was no strict limit on the solution pH in Cd2+ adsorption because the tobermorite could adjust the solution pH to an alkaline atmosphere spontaneously. The efficient removal of Cd2+ using tobermorite was a result of surface complexation and ion exchange.

    DOI

    Scopus

    4
    Citation
    (Scopus)
  • Mechanochemical degradation treatment of TBBPA: A kinetic approach for predicting the degradation rate constant

    Yutaro Takaya, Yiyun Xiao, Yuki Tsunazawa, Mauricio Córdova, Chiharu Tokoro

    Advanced Powder Technology   33 ( 3 ) 103469 - 103469  2022.03  [Refereed]

    DOI

    Scopus

    5
    Citation
    (Scopus)
  • Enhanced elution of chloride ions from incinerator bottom ash

    Gjergj Dodbiba, Xiang Zhang, Yonggu Kim, Mauricio Córdova Udaeta, Josiane Ponou, Toyohisa Fujita

    Chemical Engineering Communications   208 ( 12 ) 1686 - 1694  2021.12  [Refereed]

    DOI

    Scopus

    1
    Citation
    (Scopus)
  • Relative distribution enhancement: a new factor for the evaluation of synergistic solvent extraction

    Diana Laura Gómez‐Sánchez, Hikaru Koga, Yonggu Kim, Mauricio Cordova Udaeta, Gjergj Dodbiba

    Journal of Chemical Technology & Biotechnology   96 ( 10 ) 2827 - 2836  2021.10  [Refereed]

    DOI

    Scopus

  • Study on the Synthesis of Hydroxyapatite under Highly Alkaline Conditions

    Mauricio Córdova-Udaeta, Yonggu Kim, Kazutaka Yasukawa, Yasuhiro Kato, Toyohisa Fujita, Gjergj Dodbiba

    Industrial & Engineering Chemistry Research   60 ( 11 ) 4385 - 4396  2021.03  [Refereed]

    DOI

    Scopus

    18
    Citation
    (Scopus)
  • Enrichment of silicocarnotite from silicocarnotite and gehlenite mixtures using a kerosene-based liquid-liquid separation process

    Mauricio Córdova Udaeta, Josiane Ponou, Gjergj Dodbiba, Toyohisa Fujita

    Journal of Environmental Chemical Engineering   7 ( 6 ) 103387 - 103387  2019.12  [Refereed]

    DOI

    Scopus

    4
    Citation
    (Scopus)
  • Recovery of Phosphorus from Sewage Sludge Ash by Heat treatment and Liquid-Liquid Separation

    Mauricio CORDOVA UDAETA, Gjergj DODBIBA, Josiane PONOU, Keiichi SONE, Toyohisa FUJITA

    International Journal of the Society of Materials Engineering for Resources   23 ( 1 ) 93 - 97  2018.03  [Refereed]

    DOI

    Scopus

    1
    Citation
    (Scopus)
  • Recovery of phosphorus from Sewage Sludge Ash (SSA) by heat treatment followed by high gradient magnetic separation and flotation

    Mauricio Córdova Udaeta, Gjergj Dodbiba, Josiane Ponou, Keiichi Sone, Toyohisa Fujita

    Advanced Powder Technology   28 ( 3 ) 755 - 762  2017.03  [Refereed]

    DOI

    Scopus

    15
    Citation
    (Scopus)

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Industrial Property Rights

  • Hydroxyapatite particles and production method of hydroxyapatite

    Gjergj Dodbiba, Mauricio Cordova

    Patent

 

Sub-affiliation

  • Faculty of Science and Engineering   School of Creative Science and Engineering