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首页> 外文期刊>Journal of Environmental Management >Fouling resistant functional blend membrane for removal of organic matter and heavy metal ions
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Fouling resistant functional blend membrane for removal of organic matter and heavy metal ions

机译：防污功能混合膜，可去除有机物和重金属离子

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摘要

This study investigates the removal of heavy metal ions and humic acid using Cellulose acetate (CA) and Poly (methyl vinyl ether-alt-maleic acid) (PMVEMA) blend membranes. Antifouling properties of blend membranes were also investigated. Flat sheet membranes were prepared by phase inversion technique using different concentrations of CA and PMVEMA. The prepared membranes were characterized and their performance was evaluated by measuring pure water flux, water uptake capacity and humic acid removal. Rejection of humic acid (HA) was observed to be around 97% for all the blend membranes because of electrostatic interactions between the functional groups of HA and blends. The fouling characteristics of the membranes was assessed using HA as a foulant and the antifouling capacity of blend membranes was observed to be greater with a flux recovery ratio of almost 95% when compared to bare CA, commercial CA (Techlnc) and other reported CA blends used for HA rejection. Also, the blend membranes were very effective in removing heavy metal ions (Pb2+, Cd2+ and Cr+6) and humic acid simultaneously. Overall, the PMVEMA modified CA membranes can open up new possibilities in enhancing the hydrophilicity, permeability and antifouling properties.
机译：这项研究调查了使用醋酸纤维素（CA）和聚（甲基乙烯基醚-马来酸）（PMVEMA）混合膜去除重金属离子和腐殖酸的方法。还研究了共混膜的防污性能。使用不同浓度的CA和PMVEMA，通过相转化技术制备平板膜。对制备的膜进行表征，并通过测量纯水通量，吸水能力和腐殖酸去除率来评估其性能。对于所有的共混物膜，由于HA和共混物的官能团之间存在静电相互作用，因此观察到腐殖酸（HA）的排斥率约为97％。使用HA作为污垢剂评估了膜的结垢特性，与裸露的CA，市售CA（Techlnc）和其他报告的CA掺合物相比，共混膜的抗污垢能力更高，通量回收率接近95％用于HA拒绝。同样，共混膜在同时去除重金属离子（Pb2 +，Cd2 +和Cr + 6）和腐殖酸方面非常有效。总体而言，PMVEMA改性的CA膜可为增强亲水性，渗透性和防污性能开辟新的可能性。

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