中北大学学报（自然科学版）2018，Vol.39Issue(4)：445-449,473,6.DOI:10.3969/j.issn.1673-3193.2018.04.013
Li+在高岭土上的吸附行为研究
The Sorption Behavior of Li+on Kaolin
摘要
Abstract
The adsorption thermodynamics and kinetics were discussed by simulation,after discussed the effect of adsorption time,temperature,adsorbent concentration and Li+initial concentration on the sorption of Li+on Kaolin using dynamic adsorption method,on the base of the analysis of kaolin struc-ture by SEM.The results indicate that the equilibrium adsorption of Li+on kaolin decrease with of the dosage of kaolinite increase.The adsorption capacity of Li+in kaolin is dynamic equilibrium at 30 min. The process of Li+adsorption onto kaolin conforms to the quasi-second-order kinetics model.As the concentration of Li+increase,the adsorption capacity increase first and then the change is very small at the temperatures of 273 K,303 K and 323 K.The adsorption quantity decrease with the increase of tem-perature in the same initial concentration of Li+.The behavior of Li+adsorption onto kaolin is more consistent with the Langmuir isothermal adsorption model.The calculated results of the thermodynamic functions are ΔG0>0,ΔS0<0,ΔH0<0.关键词
高岭土/锂离子/吸附/动力学/热力学Key words
kaolin/Li+/adsorption/kinetics/thermodynamics分类
化学化工引用本文复制引用
赵静,李彦岗,赵仲鹤..Li+在高岭土上的吸附行为研究[J].中北大学学报（自然科学版）,2018,39(4):445-449,473,6.基金项目
青海省科技合作专项(2016-HZ-803) （2016-HZ-803）
