氨基酸双子表面活性剂复配增溶PCE性能研究

赵寒; 董军; 夏添; 梁雪; 李文德

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中国环境科学 ›› 2021, Vol. 41 ›› Issue (4) : 1634-1641.

水污染与控制

氨基酸双子表面活性剂复配增溶PCE性能研究

赵寒^1,2, 董军^1,2, 夏添^1,2, 梁雪^1,2, 李文德^1,2

作者信息 +

Performance of amino acid gemini surfactant co-mixed systems in solubilization of perchloroethylene

ZHAO Han^1,2, DONG Jun^1,2, XIA Tian^1,2, LIANG Xue^1,2, LI Wen-de^1,2

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文章历史 +

摘要

利用氨基酸双子表面活性剂N，N'-双月桂酰基乙二胺二丙酸钠（DLMC）及其复配体系来提高四氯乙烯（PCE）在地下水中的溶解性，强化去除效果.测定了DLMC的初级生物降解性并将其与短链醇（异丙醇IPA，乙醇）和传统表面活性剂十二烷基硫酸钠（SDS），辛基苯基聚氧乙烯醚（TX-100）和聚氧乙烯脱水山梨醇单油酸酯（Tween80）复配.结果表明，DLMC的生物降解度超过99%，具备良好的生物降解性；筛选出DLMC-IPA （1：4）和DLMC-Tween80（1：1）两个PCE污染柱冲洗剂配方，40g/L作用浓度下其增溶浓度分别为18329，16906mg/L；DLMC-Tween80（1：1）对PCE污染柱的冲洗效果最好，冲洗效率为9.87（g PCE/L冲洗液），较DLMC单体系提升16%.

Abstract

The amino acid gemini surfactant N, N'-dilauroyl ethylenediamine sodium dipropionate (DLMC) and its co-mixed system were used to improve the solubility of perchloroethylene (PCE) in groundwater and to enhance the removal effect.The primary biodegradability of DLMC was determined and it was co-mixed with short-chain alcohols (isopropyl alcohol, ethanol) and traditional surfactants including sodium dodecyl sulfate(SDS), octylphenyl polyoxyethylene ether(TX-100) and polyoxyethylene dehydrated sorbitan monooleate (Tween80). The results showed that the biodegradability of DLMC was over 99%, possessing good biodegradability. Two formulations of DLMC-IPA (1:4) and DLMC-Tween80 (1:1) were selected for PCE-contaminated column flushing and their solubilizing concentrations were 18329 and 16906mg/L at 40g/L, respectively. DLMC-Tween80(1:1) showed the best flushing effect on PCE-contaminated columns with a flushing efficiency of 9.87g PCE per liter of flushing solution, which was 16% higher than that of single DLMC system.

导出引用

赵寒, 董军, 夏添, 梁雪, 李文德. 氨基酸双子表面活性剂复配增溶PCE性能研究[J]. 中国环境科学. 2021, 41(4): 1634-1641

ZHAO Han, DONG Jun, XIA Tian, LIANG Xue, LI Wen-de. Performance of amino acid gemini surfactant co-mixed systems in solubilization of perchloroethylene[J]. China Environmental Science. 2021, 41(4): 1634-1641

中图分类号： X703

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