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论文类型：期刊论文

发表时间：2018-04-01

发表刊物：KOREAN JOURNAL OF CHEMICAL ENGINEERING

收录刊物：SCIE

卷号：35

期号：4

页面范围：964-973

ISSN号：0256-1115

关键字：Carbon Nanotubes Hollow Fiber Membranes; Membrane Fouling; Natural Organic Pollutants; Electrochemical Effects; COD Removal

摘要：Membrane fouling is a universal problem for conventional membrane filtration that usually causes a deterioration in membrane performance. We used electro-assisted carbon nanotubes hollow fiber membranes (CNTs-HFMs) to investigate the anti-fouling properties using natural organic pollutants. Benefiting from the electro-assistance, the permeation flux of humic acid solution using CNTs-HFMs was 190.20 L/(m(2)center dot h center dot bar), which was about 1.5- and 4.4-times higher than those of CNTs-HFMs without electro-assistance and traditional polyvinylidene fluoride hollow-fiber membranes (PVDF-HFMs). And the permeation fluxes of bovine serum albumin, sodium alginate and supernatant of anaerobic bioreactor also presented similar results. The average COD removal rate of CNTs-HFMs (66.8%) at -1.0 V was higher than that of CNTs-HFMs without electro-assistance and PVDF-HFMs, which can be attributed to the formation of electrostatic repulsive force. It could reduce the deposition of pollutants on membrane surface under electroassistance.