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http://dx.doi.org/10.11001/jksww.2014.28.6.713

Surface characterization and evaluation of biofouling inhibition of reverse osmosis membranes coated with Epigallocatechin gallate(EGCG)/vanillin  

Jung, Jaehyun (Konkuk University)
Kim, Youngjin (Catholic University of Daegu)
Nam, Haewook (POSCO E&C)
Kim, Yunjung (POSCO E&C)
Lee, Eunsu (POSCO E&C)
Lee, Younil (Catholic University of Daegu)
Kweon, Jihyang (Konkuk University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.28, no.6, 2014 , pp. 713-723 More about this Journal
Abstract
Biofouling in brackish water reverse osmosis (RO) membranes still needs extensive research to understand cause and mechanism and to obtain methods for reduction of its impact on RO applications. Natural compounds with biofilm formation inhibitory properties are being investigated. Two compounds, vanillin and Epigallocatechin gallate (EGCG), were selected due to their great potential on biofilm formation inhibition. Vanillin shows inhibition on quorum sensing mechanisms of biofilm formation. EGCG has potential to inactivate microbial activity. The two compounds were incorporated in typical polyamide reverse osmosis membranes and evaluated on flux behaviours and biofilm formation potential. The surface properties of membrane coated with vanillin were changed tremendously compared to those with EGCG. As a result, the flux was reduced substantially. The biofilm formation seems hindered with EGCG coated membranes compared to the virgin membranes. More research is needed to optimize coating methods applicable to RO membranes and to enhance biofouling reduction.
Keywords
biofouling; membrane; Biofouling inhibition Compounds; Vanillin; Epigallocatechin gallate;
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Times Cited By KSCI : 2  (Citation Analysis)
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