所属单位：化学与化工学院

发表刊物：Desalination and Water Treatment

关键字：中文关键字：PVDF超滤法；膜改性；染料污染；膜污染，英文关键字：PVDF ultrafiltration; Modified membrane; dye efflu

摘要：Using DMAc as solvent, water as non-solvent, modified poly (vinylidene fluoride) (PVDF) ultrafiltration membranes (PSi, PA, PS) were prepared by precipitation phase inversion, blending with nano-silica (SiO2), polyvinyl alcohol (PVA), and styrene maleic anhydride. The physical-chemical properties and morphology of PVDF membranes were characterized by FT-IR, water contact angle (WCA), swelling index, scanning electron microscopy, atomic force microscopy, etc. Considering reactive black 5 and congo red as the representatives of dye effluent pollutions, the filtration behavior to dye wastewater of four different types of PVDF UF membranes was discussed. Experimental results showed that, compared with original PVDF UF membrane, for three kinds of modified membrane, the first bubble pressure and strength (S) fell off to a certain extent, and the membrane surface roughness increased. Additionally, the cross-sectional macroporous and pure water flux (J) all increased. Especially, owing to the addition of PVA and SiO2, the WCA and the adsorption amount (Q) of PA and PSi membranes were reduced extraordinarily, and flux recovery rate increased obviously. As a result, the hydrophilicity of PVDF membrane was improved significantly. Moreover, the rejection (r) to two dyes was also remained well, which showed a better anti-fouling ability.

备注：孟晓荣

合写作者：NanZhang,Xu-dongWang,LeiWang,Dan-xiHuang,RuiM

第一作者：孟晓荣

论文类型：期刊论文

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是否译文：否

发表时间：2013-10-01