活化过硫酸钠原位修复石油类污染土壤研究进展  

Persulfate In-situ remediation of petroleum hydrocarbon contaminated soil

作　　者：吴昊[1] 孙丽娜[1] 王辉[1] 王晓旭[1] 

机构地区：[1]沈阳大学环境学院区域污染环境生态修复教育部重点实验室,沈阳110044

出　　处：《环境化学》2015年第11期2085-2095,共11页Environmental Chemistry

基　　金：国家重点基础研究发展计划项目(973计划)(2014CB441106);沈阳市科技计划项目(F14-133-9-00);沈阳市科学事业费竞争性选择项目(城市生态风险管理及其修复技术研究);科技部中德科技合作项目(S2012ZR01912)资助

摘　　要：过硫酸钠作为原位化学氧化技术常用的氧化剂在国外已经被广泛用于实际石油类污染土壤的修复,国内则应用较少.过硫酸钠通过活化能产生SO-·4和·OH,这些具有强氧化性的基团可以降解大部分的石油类污染物.本文在关注过硫酸钠活化技术与反应机理的基础上,分析过硫酸钠原位修复后土壤环境的生物地球化学变化以及多种修复技术联合的工程应用,对过硫酸钠自活化试剂的制备、过硫酸钠原位修复与其它土壤修复技术联合和当前应用中存在的问题等进行了展望.Persulfate In situ chemical oxidation（ ISCO） is a common soil remediation technology that has been applied extensively to petroleum hydrocarbons aborad,but not in China. Persulfate is one of the strongest oxidants,and offers some advantages over other oxidants because it is relatively stable at ambient temperature with the ease of storage and usage. Upon activation,persulfate can produce the highly oxidative species,sulfate free radicals and hydroxyl radicals which can react with a variety of organic pollutants. Many studies have been conducted to investigate the efficiencies of activated persulfate for the oxidation of petroleum hydrocarbon. This paper provide a review on the activation of persulfate including thermal,base,transitional metal,organic compound,subsurface minerals,activated carbon and integrated oxidation. The latest for ISCO with persulfate are presented,with a focus on the reactions of persulfate with soil and contaminant,biogeochemistry after persulfate oxidation,and engineering application of persulfate. The last section is devoted to identifying its current environmental applications the directions of future research.

关 键 词：活化过硫酸钠 原位化学氧化 石油类 土壤修复 

分 类 号：X53[环境科学与工程—环境工程]