非离子表面活性剂改性土壤的制备及其对水中有机污染物的吸附研究  

Modification of Montmorillonites with Non- ionic Surfactants and Their Utilization in Adsorption of Several Organic Compounds from Aqueous Solution

作　　者：张晓昆[1] 张维清[1] 邹惠仙[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,江苏南京210093

出　　处：《农业环境科学学报》2004年第2期400-403,共4页Journal of Agro-Environment Science

基　　金：国家自然科学基金资助(20177006)

摘　　要：采用室内实验方法,研究了用非离子表面活性剂烷基酚与环氧乙烷缩合物TX-7、TX-15制备有机粘土及其对水中芳香族化合物硝基苯、卤代烃1,2-二氯乙烷的吸附作用。结果表明,TX-7、TX-15均能与天然蒙脱土结合,TX-7在天然蒙脱土中的吸附量大于TX-15;改性土壤对水中有机污染物的吸附能力明显大于天然蒙脱土,TX-7改性土壤的吸附能力大于TX-15改性土壤;TX-7改性土壤和天然蒙脱土对有机物的吸附通过分配进行,吸附等温线可用Henry方程表示。In this paper, preparation of organo- clays using non- ionic surfactants polyethylene glycol ethers, namely, TX- 7, TX- 15 and their adsorption towards organic compounds nitrobenzene, and 1, 2- dichloroethane from aqueous solution have been investigated. The results indicated that both non- ionic surfactants could intercalate into montmorillonite and TX- 7 demonstrated a higher sorption capacity, enhancing sorption of organic compounds by such organoclays obviously. It has been also found that the montmorillonite modified with TX- 7 showed more effective in sorption of organic compounds than did the modified with TX- 15. So did for the modified soil. Sorption mechanism of both the modified soil and raw montmorillonite towards the organic compounds may be regarded due to partition and the sorption isotherms can be expressed by Henry equation.

关 键 词：非离子表面活性剂 改性土壤 制备方法 水体 有机污染物 吸附特性 

分 类 号：X131.2[环境科学与工程—环境科学]