电动力学作用下土壤中菲的迁移特征及其机理  

Mobilization characteristic and its mechanism of phenanthrene in soils by electrokinetics

作　　者：马建伟[1] 王慧[1] 罗启仕[2] 

机构地区：[1]清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京100084 [2]上海市环境科学研究院,上海200233

出　　处：《中国环境科学》2007年第2期241-245,共5页China Environmental Science

基　　金：国家'973'项目(2004CB418506);国家'863'项目(2004AA64920)

摘　　要：研究了土壤中菲在均匀和非均匀电动力学下的迁移特征和机理,揭示了利用非均匀电动力学技术修复菲污染土壤的特性.结果表明,非均匀电动力学过程能够使土壤中的菲一定程度地向场强较大的电极区迁移,其迁移程度随运行时间增加而增大,但与非均匀电场的施加方式无关.非均匀电场对土壤中菲的迁移主要是以介电迁移方式进行的.The characteristic of migration and its mechanism of phenanthrene in soil by uniform and non-uniform electrokinetics were studied, revealing the character of using non-uniform electrokinetic technology to remediation the phenanthrene-contaminated soils. Non-uniform electrokinetic process could migrate phenanthrene in soil to districts with larger electric strength with its degree of migration increased with increase of operation time, but not related to the exerting mode of non-uniform electric field; the migration of phenanthrene in soil by non-uniform electric field was carried out mainly in the way of dielectrophoresis.

关 键 词：非均匀电动力学 菲 介电迁移 电动力学修复 

分 类 号：X144[环境科学与工程—环境科学]