Importance of the coating pH in fabrication of polyethylenimine-coated polysulfone-Escherichia coli composite fiber sorbent
- Authors
- Kim, Sok; Reddy, D. Harikishore Kumar; Choi, Yoon-E; Yun, Yeoung-Sang
- Issue Date
- 9월-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Biosorption; Adsorption; Surface modification; PEI; Coating; Bacterial biomass
- Citation
- JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, v.66, pp.379 - 385
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
- Volume
- 66
- Start Page
- 379
- End Page
- 385
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/87601
- DOI
- 10.1016/j.jtice.2016.06.020
- ISSN
- 1876-1070
- Abstract
- In present study, polyethylenimine-coated polysulfone-Escherichia coli biomass composite fibers (PEI-PSBF5) 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. (C) 2016 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
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