摘要
采用批实验法考察了土壤-有机溶剂体系中高浓度石油污染物的脱附行为,包括脱附动力学、脱附等温线和平衡参数。结果表明土壤中石油污染物的脱附过程是一个快速反应过程,在5 min内大约80%的污染物得到脱附,30 min达到平衡,脱附平衡过程符合Freundlich模型,烷烃类有机溶剂的脱附效果更佳。
The desorption behavior of highly concentrated petroleum pollutants in the soil-organic solvent system is examined by the volume balance method, including desorption kinetics and desorption isotherms and equilibrium parameters. The experimental results show that the desorption process of petroleum pollutants in soil is a process of rapid reaction. Approximately 80% of the petroleum pollutants desorbed in 5 minutes. Desorption balance can establish in 30 minutes and the process of desorpfion balance is in line with the Fretmdlich model. The alkane organic solvents desorbs more of petroleum pollution than other organic solvents.
出处
《现代化工》
CAS
CSCD
北大核心
2009年第7期48-50,52,共4页
Modern Chemical Industry
基金
国家"863"计划重点项目(2007AA061202)
国家自然科学基金(50879053)资助项目
关键词
石油污染物
土壤
脱附
有机溶剂
petroleum pollution
soil
desorption
organic solvent
