Removal of cadmium ions using micellar-enhanced ultrafiltration with mixed anionic-nonionic surfactants
Removal of cadmium ions using micellar-enhanced ultrafiltration with mixed anionic-nonionic surfactants
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使用混合阴离子-非离子表面活性剂的胶束增强超滤去除镉离子
DOI：
10.1016/j.memsci.2008.10.013
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发表时间：
2009-01
影响因子：
9.5
通讯作者：
Zeng, Guang-ming
中科院分区：
文献类型：
--
作者：
Li, Xue;Huang, Jin-hui;Fang, Yao-yao;Qu, Yun-huan;Zeng, Guang-ming
采用胶团强化超滤法（MEUF）对废水中镉离子进行了高效去除。采用非离子表面活性剂聚氧乙烯十二烷基醚（Brij 35）和聚氧乙烯辛基苯基醚（TritonX-100）进行胶束强化超滤，以降低阴离子表面活性剂十二烷基硫酸钠（SDS）的用量。考察了表面活性剂的临界胶束浓度（CMC）和胶束的胶束结合度。考察了非离子表面活性剂的加入对镉去除率、表面活性剂残留量、渗透通量和二次膜阻力的影响。比较了用SDS和阴-非离子混合表面活性剂的MEUF。结果表明，Brij 35或TritonX-100的加入降低了SDS的CMC，降低了胶束的反胶束结合度。由于这些变化，当Brij 35：SDS和TritonX-100：SDS的摩尔比为0.5时，Cd 2+截留效率最大。当表面活性剂总投加量一定时，SDS的MEUF对Cd ~（2+）的去除率高于混合表面活性剂的MEUF。添加SDS的超滤膜的渗透通量高于添加混合表面活性剂的超滤膜，而二次阻力小于添加混合表面活性剂的超滤膜。
Micellar-enhanced ultrafiltration (MEUF) was used to remove cadmium ions from wastewater efficiently. In this study the nonionic surfactants polyoxyethyleneglycol dodecyl ether (Brij35) and polyoxyethylene octyl phenyl ether (TritonX-100) were for micellar-enhanced ultrafiltration to lower the dosage of the anionic surfactant sodium dodecyl sulfate (SDS). The surfactant critical micelle concentration (CMC) and the degree of micelle counterion binding were investigated. The effects of nonionic surfactant addition on the efficiency of cadmium removal, the residual quantities of surfactant, the permeate flux and the secondary membrane resistance were investigated. A comparison between MEUF with SDS and MEUF with mixed anionic–nonionic surfactants was undertaken. The results show that the addition of Brij35 or TritonX-100 reduced the CMC of SDS and the degree of counterion binding for the micelles. Due to these variations the Cd2+rejection efficiency was at a maximum when the Brij35:SDS and the TritonX-100:SDS molar ratio was 0.5. The Cd2+rejection efficiency in MEUF with SDS is higher than for MEUF with mixed surfactants when the total dose of surfactant is constant. The permeate flux of MEUF with SDS is higher than that for MEUF with mixed surfactants while the secondary resistance of MEUF with SDS is less than that of MEUF with mixed surfactants.
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影响因子：
9.9
作者：
K. Baek;Hyun-ho Lee;Ji-won Yang
通讯作者：
K. Baek;Hyun-ho Lee;Ji-won Yang
影响因子：
--
作者：
RATHMAN, JF;SCAMEHORN, JF
通讯作者：
SCAMEHORN, JF
使用中空纤维膜胶束增强超滤去除合成废水中的 Cd2
DOI：
10.1016/j.colsurfa.2006.08.017
发表时间：
2007-02
影响因子：
5.2
作者：
Xu Ke;Huang Jin-hui;Xi Beidou;Liu Hongliang;Zeng Guang-ming;Huang Guohe;Li Hanbing;Fang Yao-yao;Wu Jiao-yi
通讯作者：
Wu Jiao-yi
影响因子：
8.8
作者：
Chi-Wang Li;Chuan-Kun Liu;Wei S. Yen
通讯作者：
Chi-Wang Li;Chuan-Kun Liu;Wei S. Yen
影响因子：
9.9
作者：
Lassaad Gzara;M. Dhahbi
通讯作者：
Lassaad Gzara;M. Dhahbi