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Asta Blazyte,Abayomi Babatunde Alayande,Thanh-Tin Nguyen,Rusnang Syamsul Adha,장재원,Mar Mar Aung,김인수 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.94 No.-
In the forward osmosis (FO) process, biofouling is well pronounced on the active side where wastewaterand seawater are used as feed and draw solution, respectively. However, the biofouling tendencies withinthe support layer are not clear. Therefore, the objective of this study was to investigate the effect of TEPpre-conditioning on hydophobicity and initial bacterial attachment of FO membrane support layer. Twostructurally distinct FO membranes from different manufacturers were preconditioned by soaking inartificial sea waterfiltrates containing size fractioned TEP. The conditioning solution pre-treated with a0.4 mm pore sizefilter, contributed to the highest bacterial adhesion rates during bacterial attachmenttesting in both steady state and cross-flow mode in a lab-scale FO system for both membrane types. CTA-ES support exhibited higher numbers of adhered bacteria when compared to PA-TFC support in a steadystate. Conversely, in cross-flow lab-scale testing, a negative impact of fouling on PA-TFC was moreapparent than the CTA-ES membrane. This was attributed to the higher porosity and surface roughness ofthe PA-TFC membrane. Overall, ourfindings reinforce the potential impact of hydrodynamics conditionsand membrane properties on the fouling behavior of FO membrane support layer.