摘要
简要探讨、分析了多环芳烃(PAHs)与土壤颗粒吸附的机理以及相关研究现状,对水蒸气剥离法脱附污染土壤中多环芳烃的数学模型进行数值求解,获得净化后土壤中多环芳烃浓度的理论解以及多环芳烃脱附过程的部分变化规律。同时分析了Peclet数Pe,传质参数β、反应器内停留时间γ等对脱附效果的影响。
In this paper, the transport characteristics in the desorption process of hazardous compo-nents like PAHs from contaminated soils was described and the evolution of the dispersion modei was depicted. The governing equation system was solved by means of numerical calculation. The influences of the adsorption time, the film resistance of mass transfer and the axial dispersion on the cleaning efficiency of the steam stripping process are discussed.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2004年第S1期119-122,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.29977012)
关键词
多环芳烃
脱附
水蒸气剥离法
PAHs
desorption
steam stripping technique
