文献类型：期刊文献

中文题名：萃取第三相形成过程中废水处理的去污机理

英文题名：Decontamination mechanism in process of third extracting phase formation for wastewater treatment

作者：何燧源[1];金云云[1];何萍[1];赵庆祥[1]

机构：[1]华东理工大学环境工程研究所

年份：1996

卷号：16

期号：3

起止页码：168

中文期刊名：中国环境科学

外文期刊名：China Environmental Science

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSSCI:【CSSCI1998】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金

语种：中文

中文关键词：废水处理;萃取第三相;萘衍生物;三辛胺;去污机理

外文关键词：wastewater treatment, third extracting phase, naphthalene derivative,trioctylamine (TOA),decontamination mechanism.

摘要：用漏斗试验法研究了［β－萘磺酸＋劳伦酸（钠）］－水－三辛胺（煤油）体系的萃取去污机理，结果表明，在萃取过程中除水溶性β－萘磺酸和劳伦酸的可溶部分各自与三辛胺萃取剂反应生成胺盐，并进一步聚合后形成萃取第三相外，劳伦酸的悬浮颗粒部分被第三相粘结除去，劳伦酸钠以分子形态被第三相吸附除去。并在合适的萃取条件下所涉及体系以ＣＯＤ计的去污率可达到９５％左右。由此提出＂萃取－混凝－浮上＂的去污机理。
The decontamination mechanism of [β-naphthalenesulfonic acid +Laurent's acid(sodium salt)]/H_2O/TOA(Kerosene) systems has been studied. Experimental results indicate thatβnaphthalenesulfonic acid and Laurent's acid as solutes both react with extractant TOA to form amine salts,and the resultants polymerize to make up the third phase during the extraction process.The insoluble part of Laurent's acid and its soluble sodium salt are removed from aqueous phase by means of particle adherence and molecular adsorption on the third phase respectively.Under the action of these multiple factors and favourable extraction conditions, high decontamination efficiency can be obtained (COD removal rate up to￣ 95%).Thereby a decontamination mechanism termed 'extraction-coagulation-flotation' is proposed.