摘要
本文考察了氢氧化镁用量和pH对处理效果的影响,研究了氢氧化镁对Cr(Ⅲ)的吸附热力学和动力学特性,并对作用机理进行了探讨。结果表明:氢氧化镁对铬离子具有较强的吸附能力,吸附等温线符合Langmuir和Frendlich模型,饱和吸附量为69.44mg/g;二级动力学方程较好地表征了氢氧化镁吸附Cr(Ⅲ)的动力学特性。
The effects of magnesium hydroxide dose and pH value were investigated. The thermodynamics, kinetics and the mechanism for the adsorption of Cr （Ⅲ） on magnesium hydroxide were studied. The results show that magnesium hydroxide has a better adsorption capacity, the adsorption isotherm accords with Langmuir and Frendlich mode. The maximum adsorption amount is 69.44mg/g. The second-order kinetic equation can express the dynamics characteristics.
出处
《中国矿业》
北大核心
2009年第2期101-104,共4页
China Mining Magazine
基金
甘肃科技攻关项目(GS012-B52-084)
关键词
氢氧化镁
CR3+
吸附热力学
动力学
magnesium hydroxid
Cr^3＋
adsorption thermodynamics
kinetics
