改性膨润土吸附冶炼废水中Cu^(2+)和Ni^(2+)的动力学  

Adsorption Kinetics of Cu^(2+) and Ni^(2+) in Smelting Wastewater with Modified Bentonite

作　　者：李志娟[1] 周岐雄[1] 王晓飞[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《有色金属（冶炼部分）》2015年第1期70-73,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：新疆维吾尔自治区科技计划项目(201316101);乌鲁木齐市科技局技术计划项目(Y131020009)

摘　　要：研究了实验室制备的6种改性膨润土对冶炼废水中Cu2+和Ni 2+的吸附动力学。结果表明,改性膨润土对Cu2+、Ni 2+的吸附在40min内基本达到平衡,在30℃时,吸附符合准二级动力学模型,其反应速率与反应物浓度的二次方成正比。Adsorption kinetics of Cu^2＋ and Ni^2＋ in smelting wastewater with 6kinds modified bentonite prepared in laboratory was studied.The results show that adsorption of modified bentonite on Cu^2＋ and Ni^2＋ reaches adsorption equilibrium with 40 min.This adsorption accords with quasi-secondary dynamics model,and its reaction rate is directly proportional to square of reactant concentration.

关 键 词：改性膨润土 吸附动力学 Cu^2+、Ni^2+ 

分 类 号：X705[环境科学与工程—环境工程]