生物柴油基吸收剂净化甲苯废气

Removal of waste gas containing toluene by a biodiesel-based microemulsion

摘要:

研究了新型微乳液吸收剂对含甲苯废气的吸收性能。以生物柴油、水、tween-80和正丁醇制备微乳液，最佳制备条件是：m(tween-80):m(正丁醇)=2:1，HLB值为12.33，温度为室温。吸收实验结果表明，微乳液对甲苯的吸收率高达91.14%。对吸收废液进行再生实验，二次回收的吸收液对甲苯仍然具有较好的吸收效果，吸收率高达83.85%。

Abstract:

Absorption effects of a new microemulsion absorbent on waste gas containing toluene have been studied. An oil-in-water (O/W) microemulsion was prepared by the mixture of biodiesel, water, tween-80 and n-butanol. The optimum conditions for preparation of microemulsions are as following: the mass ratio of tween-80 to n-butylalcohol is 2:1 and the HLB value is 12.33 at room temperature. The absorption results show that the removal efficiency of microemulsions for toluene can reach 91.14%. Results of the regeneration experiment indicate that the secondary recycled absorbent still have a good performance on toluene absorbing and the absorption rate is as high as 83.85%.