摘要
采用间歇振荡法,研究了钢渣吸附模式、选择性以及等温吸附方程。结果表明,钢渣对阳离子的吸附容量远远大于对阴离子的吸附容量,其吸附模式属于离子交换;其对重金属离子具有一定的吸附选择性,其选择性能与离子的电性、电价、离子半径和水化热等因素有关;钢渣吸附Pb2+是单层吸附,符合Langmu ir等温吸附方程。
Based on the oscillating adsorption experiments, the adsorptive mechanics, sorption selectivity and isotherm of steel slag to heavy metals and anions were investigated. The results showed that the adsorptive capacities of steel slag to cations were 3 -4 times larger than those of anions on steel slag. Steel slag adsorptive model was ionic exchange. Electric property, electrical valence, ionic radius and hydration energy had a significant influence on the sorption selectivity of the steel slag to metals. Among the five heavy metals （ Cu^2＋ , Cr^3＋, Pb^2＋ ,Zn^2＋ ） , Cr^3＋ had the most small radiu, therefore, it had a largest adsorbed amount. The adsorption isotherm of Pb^2＋ with steel slag follows the Langmuir model, whose relative coefficient is 0. 99.
出处
《环境工程学报》
CAS
CSCD
北大核心
2008年第1期115-119,共5页
Chinese Journal of Environmental Engineering
基金
四川教育厅重点基金资助项目(07ZA012)
成都信息工程学院发展基金资助项目(KYTZ200701)
关键词
钢渣
吸附
机理
选择性
等温方程
steel slag
adsorption
mechanics
selectivity
isotherm
作者简介
刘盛余（1976-），男，博士，副教授，主要从事环境污染控制与治理研究工作。E-mail：lsy@cuit．edu．cn
