Micellar-enhanced ultrafiltration (MEUF) with mixed surfactants for removing Cu(II) ions.
Micellar-enhanced ultrafiltration (MEUF) with mixed surfactants for removing Cu(II) ions.
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DOI：
10.1016/j.chemosphere.2005.07.017
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发表时间：
2006-04
期刊：
影响因子：
8.8
通讯作者：
Chi-Wang Li;Chuan-Kun Liu;Wei S. Yen
中科院分区：
文献类型：
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作者：
Chi-Wang Li;Chuan-Kun Liu;Wei S. Yen
将非离子表面活性剂聚氧乙烯辛基苯基醚 (Triton-X) 添加到胶束增强超滤过程中，以降低阴离子表面活性剂十二烷基硫酸钠 (SDS) 的临界胶束浓度 (CMC)。研究了添加Triton-X对铜去除效率、渗透物SDS浓度、SDS胶束的铜结合能力和膜污染的影响。我们的结果表明，添加浓度大于其 CMC 的 Triton-X 可以减少有效去除 Cu 所需的 SDS 剂量，同时最大限度地降低渗透液 SDS 浓度。尽管添加Triton-X没有观察到对SDS胶束的铜结合能力产生不利影响，但膜污染更加严重。用去离子水清洗膜可以恢复膜通量，表明 Triton-X 引起的污垢是可逆的。
A nonionic surfactant, polyoxyethylene Octyl phenyl ether (Triton-X), is added to a micellar-enhanced ultrafiltration process to lower the critical micellar concentration (CMC) of an anionic surfactant, sodium dodecyl sulfate (SDS). The effects of adding Triton-X on the copper removal efficiency, the permeate SDS concentration, the copper binding capacity of SDS micelles, and membrane fouling are investigated. Our results show that the addition of Triton-X at concentrations greater than its CMC can reduce the SDS dosage required for effective Cu removal, and at the same time, minimize the permeate SDS concentration. Although, no adverse effect on the copper binding capacity of SDS micelle is observed by the addition of Triton-X, the membrane fouling is worsen. Cleaning the membrane with DI water allowed restoring the membrane flux, indicating that the fouling caused by Triton-X was reversible.