Solublilizing Activity of 1,2-Dichloroethane in Cationic Surfactants
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摘要: 为研究胶团强化超滤法(MEUF)处理工业废水中的有机污染物,讨论了3种阳离子表面活性剂(SAA)十六烷基三甲基氯化铵(CTAC)、十六烷基三甲基溴化铵(CTAB)、溴代十四烷基吡啶(MPB)对1,2-二氯乙烷(DCE)的增溶作用.使用顶空气相色谱法分别测定DCE在3种表面活性剂溶液中的最大增溶量ρmax,从而计算其在胶团相中摩尔分数xm、在水相中的摩尔分数xb、最大添加浓度MAC、分布系数P、以及增溶系数K.综合比较发现,3种表面活性剂对DCE的增溶能力为CTAC>CTAB>MPB.Abstract: The solubilizing power of 1, 2-dichloroethane (DCE) in micellar system formed by three cationic surfactants, cetyltrimethyl ammonium chloride(CTAC)、cetyltrimethyl ammonium bromide (CTAB), myristyl pyridinium bromide(MPB), was discussed in order to eliminate organic pollutions in industrial wastewater using micelle-enhanced ultrafiltration(MEUF) technique. Headspace gas chromatograph was applied to measure the maximal solubilizing amount (ρmax) of DCE and thereby calculate its mole fraction in micelle (xm) and water (xb), its maximal additive concentration (MAC). its distributing coefficient (P) and solubilization coefficient (K). The results showed that solublilizing activity of DCE in the three cationic surfactants was CTAC > CTAB > MPB.
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Keywords:
- surfactants /
- solubilization /
- micellar-enhanced ultrafiltration /
- 1,2-dichloroethane
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