利用城市给水厂污泥制备陶粒及其吸附去除水中Cr^(6+)的研究  

Adsorption of Cr^(6+) in the Water by Ceramsite Made from Urban Waterworks Sludge

作　　者：任新[1] 王嘉琦[1] 郭明晴 赵雪松[1] 

机构地区：[1]吉林师范大学环境科学与工程学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2017年第4期113-118,共6页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省科技发展计划项目(20170520072JH);四平市科技发展计划项目(2015060)

摘　　要：以城市给水厂污泥为主要原料,辅以膨润土制备污泥陶粒,利用污泥陶粒吸附去除水中的Cr^(6+),研究了溶液pH值、溶液中Cr^(6+)初始浓度以及反应温度对吸附过程的影响.结果表明,当溶液pH值为4.5时吸附去除效果最佳;吸附量随初始浓度增加以及反应温度的升高而增大;吸附过程符合拟二级动力学模型;Langmuir等温吸附模型能够很好地描述等温吸附过程.The sludge ceramsite was prepared by water treatment sludge and clay,the adsorption Cr^（6＋） on sludge ceramsite was studied,the effects of pH value,initial concentration of Cr^（6＋） and reaction temperature of the adsorption process were also studied. The results show that,when the p H value of the solution is 4. 5,the adsorption and removal efficiency is the best; The adsorption capacity increases with the increases of initial concentration and the reaction temperature; The adsorption process is in accordance with the quasi-second order kinetic model; The Langmuir isothermal adsorption model can describe the isothermal adsorption process well.

关 键 词：给水厂污泥 陶粒 六价铬 等温吸附 

分 类 号：X705[环境科学与工程—环境工程]