Tween-20胶束溶液对甲苯的增溶吸收作用规律及预测

以Tween-20非离子表面活性剂及助表面活性剂混合溶液作为吸收剂,增溶吸收甲苯有机废气,根据增溶实验测定的表观亨利系数预测甲苯吸收容量,结果表明,当表面活性剂浓度大于临界胶束浓度(CMC)时增溶吸收效果显著,溶质的表观溶解度与表面活性剂浓度呈正比关系;助表面活性剂可以不同程度的提高表面活性剂溶液的增溶能力,其规律为正丁胺>正丁醇>正丁酸;利用表观亨利系数预测吸收剂吸收容量的平均相对偏差分别为7.34%和8.85%,预测方法可行.

Principle and prediction for absorption of toluene by solubilization with Tween-20-containing micelle solutions

Nonionic surfactants mixed with cosurfactants were used to absorption of toluene,and the absorption capacity was predicted according to the apparent Henry's law constants obtained by solubilization experiments.The results indicated that surfactant solutions could remarkable enhance touene solubility when the concentration of surfactants was above critical mieelle concentration(CMC).The apparent toluene solubilities were proportional to Tween-20 concentration.The efficiency of cosurfactants to enhance toluene solubility followed the order:n-butylamine>butanol>butyric acid.The prediction of absorption capacity with apparent Henry's law constant was practicable with average relative deviations of 7.34%and 8.85%.