沉溶解可切换表面活性剂基微乳液:制造和潜在的应用在修复化污染的土壤
Bo Zhu1, Hui Chen1, Huanjin Zou1,2
1Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|November 11, 2025
概括
这项研究引入了一种可切换的新型表面活性剂,即二甲基烯酸盐 (DSeNa),用于高效的表面活性剂增强土壤洗 (SESW). DSeNa微乳液使表面活性剂和目标污染物p-nitrochlorobenzene的快速脱乳和高回收率成为可能.
科学领域:
- 环境化学环境化学
- 合体和表面化学
背景情况:
- 表面活性剂增强土壤洗 (SESW) 在后处理方面面临挑战,包括高效的溶化物释放和表面活性剂回收.
- 微乳液是有效的提取剂,但需要有效的脱乳和回收方法.
研究的目的:
- 开发一种沉溶解可切换的表面活性剂,用于在SESW中高效的微乳液脱乳和表面活性剂回收.
- 评估基于DSeNa的微乳液在从土壤中去除p-化 (pNCB) 的性能.
主要方法:
- 使用相图方法制备基于DSeNa的微乳液.
- 通过HCl的酸化对微乳液进行脱,以沉二甲基烯酸 (DSeH).
- 过用于DSeH回收和再生到DSeNa;pNCB提取和分离;水相处理.
主要成果:
- 在酸性化后,基于DSeNa的微乳液被快速有效地脱成三相系统 (DSeH,油,水).
- 超过96.5%的DSeH在近100%的纯度下被回收利用,并且很容易被再生为DSeNa.
- 从土壤中去除了高达99.9%的PNCB,其中99.9%的PNCB分离到油相,水相的COD降低到7.8毫克O2 L-1.
结论:
- DSeNa是SESW的高效可切换表面活性剂,可实现高效的脱和高回收率.
- 开发的方法促进了表面活性剂的循环利用和污染物的有效分离,为土壤整治提供了可持续的方法.
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