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表面活性剂增强法南被硫酸盐污染的土壤的降解

Zaoquan Huang¹, Xiaoyuan Li¹, Siying Hou²

¹Guangdong-Hong Kong-Macau Laboratory of Soil Pollution Fate and Risk Management in Earth's Critical Zone, Guangdong Provincial Academy of Environmental Science, Guangzhou, 510045, China.

Bulletin of environmental contamination and toxicology

|February 20, 2025

概括

这项研究表明,二甲基二乙烯乙二硫酸盐 (C12-MADS) 表面活性剂通过稳定硫酸盐 (SPS) 来增强土壤中的氨酸降解. 这种表面活性剂辅助的固硫酸盐系统提供了一种有效的土壤净化方法.

科学领域:

环境化学环境化学
土壤科学土壤科学
整治技术整治技术

背景情况:

芬南是一种在土壤中发现的多环芳香碳化合物污染物.
使用硫酸盐的现场化学氧化 (ISCO) 是一个有前途的补救技术.
表面活性剂可以影响基于硫酸盐的ISCO的激活和效率.

研究的目的:

研究四种表面活性剂对硫酸盐 (SPS) 在土壤中降解氨酸的热激活的影响.
为了确定最佳的表面活性剂和条件,以增强phenanthrene的去除.
评估C12-MADS在稳定SPS和提高其效率方面的作用.

主要方法:

测试了四种表面活性剂,以测试它们对SPS的热激活的影响.
确定最有效系统的最佳条件 (表面活性剂度,温度).
分析了氨酸去除效率和pH (OH-) 的影响.

主要成果:

二甲基二乙烯乙烯二硫酸盐 (C12-MADS) 被确定为一个关键的表面活性剂.
C12-MADS稳定了SPS,减少了不必要的硫酸盐基的产生.
在最佳条件下 (5 g/L C12-MADS,60°C) 实现了89.80%的氨酸去除.
增加的pH (由于OH-) 对去除效率产生了负面影响.

结论:

C12-MADS显著增强了氨酸氧化,并提高了SPS利用效率.
开发的表面活性剂辅助硫酸盐系统是有效的土壤消毒.
这项研究有助于开发先进的ISCO污染土壤修复策略.

关键词:

降解降解是一种降解.透硫酸盐是一种酸盐.南烯 (Phenanthrene) 是一种存在于人体中的物质.土壤土壤土壤.表面活性剂是一种表面活性剂.

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