生物柴油基吸收剂净化甲苯废气

Removal of Waste Gas Containing Toluene by Biodiesel-based Microemulsion

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%。

The absorption effects of a new microemulsion absorbent on waste gas containing toluene have been studied. An oil-in-water （O/W） mieroemulsion was prepared by the mixture of biodiesel, water, Tween-80 and n-butanol. The optimum conditions for preparation of microemulsions are as follows：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%. The results of the regeneration experiment indicate that the secondary recycled absorbent still has a good performance in terms of toluene absorption and the absorption rate is as high as 83.85%.