摘要
随着锂电池的广泛使用,废弃锂电池中所含的钴元素以离子形式开始进入地下水中。文章以吸附水中钴离子为研究内容。系统研究了吸附时间、溶液浓度、温度以及pH值对其吸附性能的影响。结果表明:蒙脱石对钴离子的平衡吸附时间约为1 h;在303 K下蒙脱石对钴离子的最大吸附量约为30.77 mg/g,且吸附方程可以用Langmuir模型进行良好的拟合;吸附行为符合拟二级动力学方程;最佳pH环境为弱酸性。
With lithium battery using widely,cobalt in discarded lithium battery is getting into groundwater in the form of ion.The content of article is adsorption of Co2+.It discusses the adsorption influence of adsorption time,concentration,temperature and pH.Experimental results showed that the adsorption equilibrium reached in 1 h.Based on the Langmuir model analysis,the maximum adsorption capacity of Co2+ on montmorillonite is 30.77 mg/g.By the adsorption Dynamics study,it was found that the Kinetic date is better meet pseudo-second-model.Besides,the optimal adsorption occurred at acidity.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第S1期167-170,261,共5页
Environmental Science & Technology
关键词
蒙脱石
钴离子
吸附
锂电池
montmorliionite
cobalt ion
adsorption
lithium battery
