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从微乳液中提取和重复使用表面活性剂,通过pH触发的沉溶解策略实现

Ye Fan¹, Junge Yan¹, Jiajie Pan¹

¹Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Lihu Ave 1800, Wuxi, 214122, China.

|July 29, 2024

概括

一个新的pH触发的沉溶解策略有效地从微乳液中回收表面活性物质. 这种方法可以从土壤修复过程中回收表面活性剂,油,甚至有毒污染物.

科学领域:

绿色化学绿色化学
环境科学环境科学
合体和表面化学

背景情况:

从微乳液 (ME) 中有效地提取和重复使用表面活性剂存在重大挑战.
基于表面活性剂的微乳液广泛用于各种应用,包括环境修复.

研究的目的:

开发一种新的策略,以有效地从微乳液中提取和重复使用表面活性剂.
证明该策略在环境修复的背景下适用,特别是对于被有毒有机化合物污染的土壤.

主要方法:

开发了一种pH触发的沉溶解 (PTPD) 策略,使用3-利胺) -1-硫酸盐 (LMPS) 作为表面活性剂.
使用HCl将LMPS转化为其不溶性内盐 (LMP),从而导致微乳液脱乳化.
随后,使用NaOH将LMP恢复到LMPS.
蒸是用来回收辅表面活性剂和油相的.

主要成果:

通过PTPD策略,可以有效地从各种微乳液中获取LMP (~95.3%).
从LMP恢复LMPS的效率很高 (~96.6%).
这一策略与蒸相结合,使LMPS (~96.6%),甲 (BaP,~99.5%) 和油/共表面活性剂混合物 (~97.1%) 从受污染的土壤化物中得到有效的回收.

结论:

触发pH的沉溶解策略为从微乳液中恢复表面活性剂提供了有效的解决方案.
这种方法对土壤化剂的后处理具有显著的前景,可以回收有价值的表面活性物质并去除有毒污染物.

关键词:

这是一种微乳液微乳液.沉 - 解散策略的策略.提取和重复使用表面活性剂.可持续的化学可持续的化学防止废物流失的措施

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