絮状污泥吸附Cr^(6+)特性研究  

Study of the Characteristics of Adsorption of Cr^(6+) by Flocculent Sludge

作　　者：肖丹 刘艳丽[1] 韩罗威 贺恺乐 姚嘉琦 吕翠 Xiao Dan;Liu Yanli;Han Luowei;He Kaile;Yao Jiaqi;Lv Cui(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Hubei,430070)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北430070

出　　处：《当代化工研究》2022年第21期50-52,共3页Modern Chemical Research

摘　　要：以絮状污泥为生物吸附剂,探究其在不同条件下对Cr^(6+)的吸附效果,并分析其吸附动力学和吸附热力学行为。结果表明,絮状污泥吸附Cr^(6+)的最佳条件为:接触时间1h,pH=0.8,30℃,污泥投加量7g/L,Cr^(6+)初始质量浓度30mg/L。絮状污泥对Cr^(6+)的吸附可用伪二级动力学模型和Langmuir模型拟合,吸附过程以化学吸附为主,存在单分子层吸附。In this study,flocculent sludge was used as biosorbent to explore its adsorption effect on Cr^(6+) under different conditions,and to analyze its adsorption kinetics and adsorption thermodynamic behavior.The results showed that the optimum conditions for Cr^(6+) adsorption by flocculent sludge are:contact time 1 h,pH=0.8,30 ℃,sludge dosage 7 g/L,initial Cr^(6+) concentration 30 mg/L.The adsorption of Cr^(6+) by flocculent sludge can be fitted by pseudo-second-order kinetic model and Langmuir model.The adsorption process is mainly chemical adsorption,and there is monolayer adsorption.

关 键 词：絮状污泥 Cr^(6+)废水 生物吸附 

分 类 号：TD[矿业工程]