期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2007

33

3

348-352

10.3321/j.issn:1007-1032.2007.03.025

国家自然科学基金项目（20677080）；

本校为其他机构

污染土壤淋洗修复技术中,淋洗剂的选择是影响这一技术应用的限制因素之一.目前研究的淋洗剂包括表面活性剂、有机或无机酸、螯合剂EDTA等.大量研究表明,表面活性剂能够去除土壤中的污染物,特别是有机污染物,提高污染土壤的修复效果.综述了表面活性剂在污染土壤修复中的应用.土壤有机污染修复中表面活性剂的作用主要体现在增溶洗脱土壤中有机污染物,提高有机物在水中的溶解度和流动性;增强土壤对有机污染物的吸附作用,即增强截留固定作用;改变吸附态或溶解态有机污染物的生物利用性.土壤重金属污染修复中表面活性剂的作用主要体现在离子交换和络合作用.

Extraction process with or without additives are employed to removal contaminants in soil. Additive which include surfactants, organic and inorganic acids, complexing agents such as EDTA, and so on, is one of limited factors in flushing remediation technology. It has been demonstrated high contaminants removal rates are possible by using surfactants. The addition of the surfactants can accelerate remediation work. This paper provides an overview of the function of surfactants in soil remediation. Function of surfactants for remediation of NAPLs include enhancing the solubility of the NAPLs, in...