水资源保护2012，Vol.28Issue(2)：68-71,4.DOI:10.3969/j.issn.1004-6933.2012.02.017
铅锌矿尾矿吸附水溶液中碱性品绿的研究
Adsorption of basic green from aqueous solutions using railings of lead-zinc ore
摘要
Abstract
The adsorption of basic green (BG) from an aqueous solution using tailings of lead-zinc ore (TLZO) under different conditions was studied, and the adsorption mechanism was investigated. The experimental results show the following: The pH value of the solution significantly affected the adsorption of BG. The optimum pH value was 7.0. The process of BG adsorption by TLZO was quick and equilibrium was attained within 40 minutes. As the initial concentration increased, the adsorption capacity increased and the time required to attain equilibrium lengthened. The kinetic parameters were evaluated and showed good correlation with the pseudo-second-order kinetic model. The external diffusion at the initial stage had a great effect on the rate of adsorption of BG by TLZO. In the intra-particle diffusion process, the rate parameter K?t2 was larger than Kp 3 at the same initial concentration, and the rate parameter at the same diffusion stage increased with the initial concentration. The isothermal adsorption of BG by TLZO conformed well to the Freundlich adsorption isotherm model.关键词
铅锌矿尾矿/碱性品绿/吸附/外扩散/内扩散Key words
tailings of lead-zinc ore/ basic green/ adsorption/ external diffusion/ intra-particle diffusion分类
资源环境引用本文复制引用
戴琦,吴云海,胡玥,刘敏敏..铅锌矿尾矿吸附水溶液中碱性品绿的研究[J].水资源保护,2012,28(2):68-71,4.基金项目
河海大学自然科学基金(2009425711) （2009425711）
