Mitigating Biofouling with a Vanillin Coating on Thin Film Composite Reverse Osmosis Membranes

Overview

Journal Environ Sci Pollut Res Int

Publisher Springer

Specialties Environmental Health
Toxicology

Date 2019 Nov 23

PMID 31755056

Citations 1

Authors

Hyunseo Shin

Chansoo Park

Chang-Kyu Lee

Yong-Soo Lee

Jong-Oh Kim

Affiliations

Soon will be listed here.

Abstract

Several methods, such as pretreatment, membrane surface modification, feed water chlorination, and chemical cleaning, have recently been applied to control biofouling on reverse osmosis (RO) membranes-with limited success. As an alternative, compounds that inhibit bacterial quorum sensing can be used to disrupt formation of bacterial colonies. In this study, anti-biofouling using vanillin, which is a natural substance among quorum sensing inhibitor compounds, was trialed, by modifying RO membrane surfaces with vanillin, at various concentrations. We then reviewed consequential changes to membrane surface characteristics and vanillin anti-biofouling properties. A long-term RO membrane simulator was used to analyze permeability, contact angle was measured for hydrophilicity evaluation, and membrane surface morphology was analyzed, through atomic force microscopy and scanning electron microscopy. A quorum quenching effect was confirmed by utilizing Petrifilm to count bacteria on the surface of a modified membrane. As a result, the permeability of the surface modified membranes was slightly decreased compared to the pristine membrane, but the hydrophilicity was increased, and the number of colonies decreased remarkably, the membrane modified with 0.5 M vanillin outperforming that modified with 0.25 M vanillin.

Citing Articles

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Suresh D, Goh P, Ismail A, Hilal N Membranes (Basel). 2021; 11(11).

PMID: 34832061 PMC: 8621935. DOI: 10.3390/membranes11110832.

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