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土壤中苯系物在表面活性剂溶液中的解吸研究
Desorption of Benzene Compounds from Soil in Surfactant Solution
【摘要】 选用阴离子表面活性剂十二烷基苯磺酸钠和十二烷基硫酸钠(LAS和SDS),阳离子表面活性剂十六烷基三甲基氯化铵(CTAB)和非离子表面活性剂(AEO-9和SA-20)对污染土壤进行解析试验。研究了用表面活性剂解吸土壤中的苯系物,从而为淋滤冲洗被石油污染的农田提供理论依据。试验表明,阴离子表面活性剂对苯系物的去除效率达95%,非离子表面活性剂对苯系物的去除率达85%,而阳离子表面活性剂无明显去除效果。
【Abstract】 The desorption of benzene compounds from soil in surfactant solutions was investigated in the present study.Anionic surfactants(LAS and SDS),cationic surfactant (CTAB)and nonionic surfactants(AEO -9and SA -20)were utilized to desorb the contaminated soil in the experiment .The results showed that the removal rate of benzene compounds was up to 95%in anionic surfactant solution,and 85%in noni onic surfactant solution,respectively,but the removal rate was not obvious in cationic surfactant solution.
【关键词】 土壤污染;
苯系物;
表面活性剂;
解吸;
清洗;
【Key words】 soil contamination; benzene compounds; surfactants; desorption; cle an -up;
【Key words】 soil contamination; benzene compounds; surfactants; desorption; cle an -up;
【基金】 国家自然科学基金资助项目(29977015);甘肃环保局基金资助项目(GH2002-14)
- 【文献出处】 农业环境科学学报 ,Journal of Agro-environmental Science , 编辑部邮箱 ,2003年05期
- 【分类号】S153.1
- 【被引频次】18
- 【下载频次】259