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Xiangying Yin,Yi He,Yuqi Wang,Hao Yu,Jingyu Chen,Yixuan Gao 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.10
Membrane fouling is usually a troublesome issue in oily water treatment, especially containing complex crude oil emulsions. Although most of the reported membranes are in a position to repel models oils, it’s still a big challenge of repelling crude oil. Besides, the fabrication processes of those membranes are too complicated, high-cost and environmentally unfriendly. Hence, in this work, a facile and green method was designed to fabricate a Cellulose nanofiber (CNF) polyelectrolyte filtration membrane with excellent underwater superoleophobic characteristic and outstanding antifouling performance. The membrane not only can separate oil/water emulsions with a high separation efficiency (>99%) and water flux (>11,000 L m2 h1), but also remove positively charged dyes with good permeation fluxes (>10,000 L m2 h1) and rejection radio (>98%). Herein, it can be anticipated that this method has excellent potential for designing and preparing the specific membranes for multifunctional applications in water treatment.