新型吸附剂吸附正己烷性能研究

Study on adsorption property of novel adsorbent for n-hexane

以茄子秸秆、毛豆秸秆和橄榄核为原料制备活性炭,研究3种活性炭吸附正己烷的吸附穿透曲线、吸附动力学、吸附热和解吸率。结果表明:3种活性炭吸附正己烷穿透时间、吸附量、吸附热和解吸率均不同。3种活性炭吸附正己烷穿透行为均符合Logistic模型和Yoon-Nelson模型。3种活性炭对正己烷的吸附动力学行为均遵守准一级动力学方程、准二级动力学方程、Elovich动力学方程和班厄姆动力学方程。

Activated carbon was prepared from soy bean,straw eggplant straw and olive pit.The adsorption breakthrough curve,adsorption kinetics,adsorption heat and desorption rate of the three kinds of activated carbon for n-hexane were studied.The results showed that the adsorption breakthrough time,adsorption capacity,adsorption heat and desorption rate of the three kinds of activated carbon for n-hexane were different.The breakthrough behavior of three kinds of activated carbon were corresponding to Logistic model and Yoon-Nelson model.The absorption kinetics of three kinds of activated carbon were well met with first order kinetics model,pseudo-second order kinetic model,Elovich kinetic model and Bangham equation kinetic model.