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阴离子表面活性剂与铝盐复合絮凝去除苯甲酸

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Indexed by:期刊论文

Date of Publication:2017-01-01

Journal:环境科学与技术

Included Journals:CSCD

Volume:40

Issue:11

Page Number:132-137

ISSN No.:1003-6504

Key Words:十二烷基硫酸钠; 苯甲酸; 铝盐; 絮凝

Abstract:阴离子表面活性剂废水与铝盐(Al_2(SO_4)_3)的絮凝反应可以同时去除阴离子表面活性剂及其共存有机物。通过构建十二烷基硫酸钠(sodium
   dodecyl sulfate, SDS)与苯甲酸(benzoic acid,
   BA)的共存体系,研究了初始SDS浓度、Al盐投加量及pH对SDS和BA去除的影响,为絮凝反应条件的优化提供参考。结果表明:SDS浓度越大,胶束
   形成量越多,有利于SDS和BA的去除;Al可与BA形成络合物,Al盐浓度的增大有利于BA去除,但高浓度的Al离子会增大溶液离子强度,减弱其与SD
   S的结合能力,SDS去除率不会显著增加;pH会影响Al盐水解和BA解离,低pH不利于BA的去除,高pH既不利于SDS的去除,也不利于BA的去除,
   最佳pH范围为4.0~ 5.0。

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