Effects of three natural organic matter types on cellulose acetate butyrate microfiltration membrane fouling
Effects of three natural organic matter types on cellulose acetate butyrate microfiltration membrane fouling
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DOI：
10.1016/j.memsci.2011.05.068
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发表时间：
2011-09-01
影响因子：
9.5
通讯作者：
Matsuyama, Hideto
中科院分区：
文献类型：
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作者：
Hashino, Masatoshi;Hirami, Keisuke;Matsuyama, Hideto
本研究旨在阐明膜与天然有机物（NOM）之间的相互作用的影响，这被认为是在废水处理过程中的主要膜污染物。以海藻酸钠（SA）、腐殖酸（HA）和牛血清白蛋白（BSA）为NOM模型。采用醋酸丁酸纤维素聚合物（CAB）制备中空纤维膜。采用SA、HA和BSA溶液进行了过滤实验，并考察了膜污染行为。NOM在CAB膜上的吸附通过具有耗散的石英晶体微天平（QCM-D）测量，其中NOM溶液流过CAB旋涂石英晶体传感器并被吸附。与HA相比，SA在过滤的早期阶段表现出更严重的渗透通量下降和更低的反冲洗后的渗透通量恢复。SA的严重通量下降是由于高分子量组分的孔堵塞和滤饼形成。与HA相比，不含高分子组分的BSA溶液显示出逐渐的渗透通量下降，并且在240 min过滤后导致较低的渗透通量。随着BSA溶液的逐渐渗透通量下降是由于BSA在CAB膜上的容易吸附。(C)2011 Elsevier B. V.保留所有权利。
This study study aimed to clarify the effect of interactions between membranes and natural organic matter (NOM), which is considered to be the major membrane foulant in wastewater treatment processes. Sodium alginate (SA), humic acid (HA) and bovine serum albumin (BSA) were used as NOM models. Hollow fiber membranes were prepared using cellulose acetate butyrate polymer (CAB). Filtration experiments were carried out using SA, HA and BSA solutions and the membrane fouling behavior was examined. NOM adsorption on CAB membranes was measured by quartz crystal microbalance with dissipation (QCM-D), where NOM solutions were flowed across CAB spin-coated quartz crystal sensors and adsorbed. SA showed more severe permeate flux decline during the early stage of filtration and lower recovery of permeate flux after backwashing compared with HA. The severe flux decline for SA was due to pore-plugging and cake formation with high molecular weight components. The BSA solution, with no high molecular components, showed a gradual permeate flux decline and resulted in lower permeate flux after 240 min filtration compared with HA. The gradual permeate flux decline with the BSA solution was due to ready adsorption of BSA on the CAB membrane. (C) 2011 Elsevier B.V. All rights reserved.