摘要
探讨了苯蒸气在膨润土原土、单阳离子有机膨润土及阴 阳离子有机膨润土上的吸附性能、机理及影响因素 .结果表明 ,有机膨润土对苯蒸气有良好的吸附性能 ,两种阴 阳离子有机膨润土对气态苯的吸附能力大于单阳离子有机膨润土 ,表现出较强的协同吸附作用 ;有机膨润土对气态苯的吸附作用主要由分配作用所致 ,等温吸附线呈线性 ,吸附系数 (Kd)与有机膨润土的有机碳含量 (foc)成正相关 ,与温度及比表面积成负相关 ,吸附速率 (r)与有机碳含量成正相关 .有机膨润土具有较大的开发。
The properties, mechanism and influence factors of benzene vapor sorption onto original bentonite, single cation organobentonites, and anion cation organobentonites were discussed. Results showed that the sorption capacities for benzene vapor onto air dried organobentonites are greater than that on orginal bentonite. Sorption capacities for vapor phase benzene of anion\|carion organobentonites are greater than those of single cation organobentonites. Sorption isotherms of vapor phase benzene are linear. The sorption of benzene vapor by air dried organobentonites occurs essentially by vapor partition into organic matter fractions of the samples. The sorption coefficient ( K d)correlates positively with the sample organic carbon content and negatively with the sample BET (N\-2) surface area and the sorption rate( r ) are relates to organic carbon content. There is a good application foreground for organobentonites to treat organic waste gases.
出处
《环境科学学报》
CAS
CSCD
北大核心
2001年第6期666-671,共6页
Acta Scientiae Circumstantiae
基金
国家自然基金资助 (2 97770 0 5 )
