静态条件下石油污染物在水-土壤体系中的脱附特性  

Desorption characteristics of oil pollutants in the water-soil system in static conditions

作　　者：廉景燕[1] 郭敏[1] 李鑫钢[2,3] 

机构地区：[1]天津理工大学化学化工学院,天津300384 [2]天津大学化工学院化工研究所,天津300072 [3]精馏技术国家工程研究中心,天津300072

出　　处：《化工进展》2009年第8期1464-1467,共4页Chemical Industry and Engineering Progress

基　　金：国家863计划重点项目(2007AA061202);国家自然基金项目(50879053)

摘　　要：通过批量平衡法系统研究了静态条件下石油污染物在水-土壤体系中的脱附行为,包括脱附的动力学、等温线及影响因素。结果表明,石油污染物在水-土壤体系中达到脱附平衡的速度很快,40min可达到平衡。脱附等温线符合Freundlich模型,温度、酸碱度、离子强度(Ca2+)、有机质含量、沙含量、不同土壤粒径等都对脱附有一定的影响。The desorption behaviors of oil pollutants in water-soil system under static conditions are studied by a batch equilibrium method, including the desorption dynamics, isotherms and influencing factors. Experimental results illustrated that the desorption of oil pollutants in water-soil system is very fast, the desorption balance could be achieved within 40 rain. The desorption isotherms are in an agreement with the Freundlich equation model. The desorption behaviors are affected by several factors, such as temperature, pH, ionic strength（Ca^2＋）, content of organic substances, content of sand in soil and the soil particle size and so on.

关 键 词：石油污染物 水-土壤体系 脱附特性 

分 类 号：X53[环境科学与工程—环境工程]