Importance of the coating pH in fabrication of polyethylenimine-coated polysulfone-Escherichia coli composite fiber sorbent

Sok Kim; D. Harikishore Kumar Reddy; Yoon E. Choi; Yeoung Sang Yun

doi:10.1016/j.jtice.2016.06.020

Importance of the coating pH in fabrication of polyethylenimine-coated polysulfone-Escherichia coli composite fiber sorbent

Sok Kim, D. Harikishore Kumar Reddy, Yoon E. Choi, Yeoung Sang Yun

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

In present study, polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers (PEI-PSBFs) were prepared at different PEI-coating pHs. The PEI-coating pH was the critical factor affecting Pd(II) uptake and the optimum pH was around pH 9. The type and amount of functional groups in the biomass and PEI were estimated using potentiometric titration and proton-binding modeling, and these results used to simulate the pH-dependent speciations of their functional groups. As a result, electrostatic interaction between negatively charged biomass and positively charged PEI was estimated to be the largest at pH 9.2, and was closed to the experimentally obtained optimum PEI-coating pH.

Original language	English
Pages (from-to)	379-385
Number of pages	7
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	66
DOIs	https://doi.org/10.1016/j.jtice.2016.06.020
Publication status	Published - 2016 Sept 1

Keywords

Adsorption
Bacterial biomass
Biosorption
Coating
PEI
Surface modification

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1016/j.jtice.2016.06.020

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@article{df626e47ddb24635856e89efef14b555,

title = "Importance of the coating pH in fabrication of polyethylenimine-coated polysulfone-Escherichia coli composite fiber sorbent",

abstract = "In present study, polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers (PEI-PSBFs) were prepared at different PEI-coating pHs. The PEI-coating pH was the critical factor affecting Pd(II) uptake and the optimum pH was around pH 9. The type and amount of functional groups in the biomass and PEI were estimated using potentiometric titration and proton-binding modeling, and these results used to simulate the pH-dependent speciations of their functional groups. As a result, electrostatic interaction between negatively charged biomass and positively charged PEI was estimated to be the largest at pH 9.2, and was closed to the experimentally obtained optimum PEI-coating pH.",

keywords = "Adsorption, Bacterial biomass, Biosorption, Coating, PEI, Surface modification",

author = "Sok Kim and {Kumar Reddy}, {D. Harikishore} and Choi, {Yoon E.} and Yun, {Yeoung Sang}",

note = "Funding Information: This work was supported by the Korean Government through NRF (2014R1A2A1A09007378 and 2014R1A1A2055300) and Korea University grants. Publisher Copyright: {\textcopyright} 2016 Taiwan Institute of Chemical Engineers",

year = "2016",

month = sep,

day = "1",

doi = "10.1016/j.jtice.2016.06.020",

language = "English",

volume = "66",

pages = "379--385",

journal = "Journal of the Taiwan Institute of Chemical Engineers",

issn = "1876-1070",

publisher = "Taiwan Institute of Chemical Engineers",

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TY - JOUR

T1 - Importance of the coating pH in fabrication of polyethylenimine-coated polysulfone-Escherichia coli composite fiber sorbent

AU - Kim, Sok

AU - Kumar Reddy, D. Harikishore

AU - Choi, Yoon E.

AU - Yun, Yeoung Sang

N1 - Funding Information: This work was supported by the Korean Government through NRF (2014R1A2A1A09007378 and 2014R1A1A2055300) and Korea University grants. Publisher Copyright: © 2016 Taiwan Institute of Chemical Engineers

PY - 2016/9/1

Y1 - 2016/9/1

N2 - In present study, polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers (PEI-PSBFs) were prepared at different PEI-coating pHs. The PEI-coating pH was the critical factor affecting Pd(II) uptake and the optimum pH was around pH 9. The type and amount of functional groups in the biomass and PEI were estimated using potentiometric titration and proton-binding modeling, and these results used to simulate the pH-dependent speciations of their functional groups. As a result, electrostatic interaction between negatively charged biomass and positively charged PEI was estimated to be the largest at pH 9.2, and was closed to the experimentally obtained optimum PEI-coating pH.

AB - In present study, polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers (PEI-PSBFs) were prepared at different PEI-coating pHs. The PEI-coating pH was the critical factor affecting Pd(II) uptake and the optimum pH was around pH 9. The type and amount of functional groups in the biomass and PEI were estimated using potentiometric titration and proton-binding modeling, and these results used to simulate the pH-dependent speciations of their functional groups. As a result, electrostatic interaction between negatively charged biomass and positively charged PEI was estimated to be the largest at pH 9.2, and was closed to the experimentally obtained optimum PEI-coating pH.

KW - Adsorption

KW - Bacterial biomass

KW - Biosorption

KW - Coating

KW - PEI

KW - Surface modification

UR - http://www.scopus.com/inward/record.url?scp=84992150920&partnerID=8YFLogxK

U2 - 10.1016/j.jtice.2016.06.020

DO - 10.1016/j.jtice.2016.06.020

M3 - Article

AN - SCOPUS:84992150920

SN - 1876-1070

VL - 66

SP - 379

EP - 385

JO - Journal of the Taiwan Institute of Chemical Engineers

JF - Journal of the Taiwan Institute of Chemical Engineers

ER -

Importance of the coating pH in fabrication of polyethylenimine-coated polysulfone-Escherichia coli composite fiber sorbent

Abstract

Keywords

ASJC Scopus subject areas

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