Comparison of two different UV-grafted nanofiltration membranes prepared for reduction of humic acid fouling using acrylic acid and N-vinylpyrrolidone
Comparison of two different UV-grafted nanofiltration membranes prepared for reduction of humic acid fouling using acrylic acid and N-vinylpyrrolidone
复制标题
DOI：
10.1016/j.desal.2010.10.031
复制
发表时间：
2012-02-15
期刊：
影响因子：
9.9
通讯作者：
Hilal, N.
中科院分区：
文献类型：
--
作者：
Abu Seman, M. N.;Khayet, M.;Hilal, N.
研究了不同浓度的丙烯酸和N-乙烯基吡咯烷酮两种单体在不同光照时间和不同水溶液中的紫外光接枝反应。用腐植酸模型溶液研究了未接枝聚醚砜和UV接枝膜在两种不同pH值(7和3)下的不可逆污染。结果表明，在pH为7的条件下，UV接枝膜几乎不容易受到腐植酸分子的不可逆污染。但在pH为3的酸性条件下，一些膜表现出比未接枝膜更严重的污染程度，特别是对于粗糙度较高的膜。由于腐植酸分子尺寸较大，紫外光接枝聚醚砜膜后产生的较小孔径对腐植酸的去除没有显著影响。(C)2010爱思唯尔B.V.保留所有权利。
UV-photografting using two different monomers, acrylic acid and N-vinylpyrrolidone, with different concentrations in an aqueous solution and various irradiation times were studied. Irreversible fouling of both the un-grafted polyethersulfone and the UV-grafted membranes have been studied using humic acid model solutions at two different pH values; 7 and 3. It was observed that the UV-grafted membranes exhibited practically less tendency to be irreversibly fouled by humic acid molecules at pH 7. However at the acidic condition of pH 3, some membranes exhibited a higher degree of fouling more than the un-grafted membrane, especially for membranes with higher roughness values. The smaller pore size generated after UV-grafting of polyethersulfone membrane did not significantly affect humic acid removal due to the larger humic acid molecular size. (C) 2010 Elsevier B.V. All rights reserved.