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Adsorptive chito-beads for control of membrane fouling SCIE SCOPUS

Title
Adsorptive chito-beads for control of membrane fouling
Authors
Choi, Seung-JuOsman, AsilaKim, SionKang, SeoktaeHwang, Dong Soo
Date Issued
2024-03
Publisher
Pergamon Press Ltd.
Abstract
Chitosan has excellent antimicrobial, adsorption, heavy metal removal, and adhesion properties, making it a good substitute for microplastic-based cleaners. Here, chitosan microbeads (chito-beads) of various sizes ranging from 32 lim to 283 lim were prepared via emulsion using a liquid on oil method and the feasibility of using them as an essential constituent in a chemical cleaning solution for a reverse-osmosis (RO) membrane-fouling-control process was assessed. Prior to the assessment the cleaning efficiency of a solution containing chito-beads, the interaction energy between chitosan and a representative organic foulant (humic acid (HA)) in a RO membrane fouling was analyzed using colloidal atomic force microscopy, and the strongest attraction between chitosan and HA was observed in an aqueous solution. When comparing the membrane cleaning efficiency of cleaning solutions with and without chito-beads, smaller chito-beads (32 lim and 70 lim) were found to have higher cleaning efficiency. Applications of chito-beads to the membrane cleaning process can enhance the cleaning efficiency through the physicochemical interaction with organic foulants. This study can widen the use of chito-beads as an additive to membrane chemical cleaning solutions to control membrane fouling in other membrane processes as well.
URI
https://oasis.postech.ac.kr/handle/2014.oak/120097
DOI
10.1016/j.carbpol.2023.121642
ISSN
0144-8617
Article Type
Article
Citation
Carbohydrate Polymers, vol. 327, page. 121642, 2024-03
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황동수HWANG, DONG SOO
Div of Environmental Science & Enginrg
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