期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 23, 期 3, 页码 2778-2788出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-015-5422-6
关键词
Fly ash; Zeolite; Adsorption; Heavy metals
资金
- Guangdong Province Science and Technology Project [2013B090200016, 2013B021000008]
- Joint Fund of Guangdong Province [U1401235]
- Major Science and Technology program for the Industry-Academia-Research collaborative Innovation of Guangzhou
- Electric Power Research Institute of Guangdong Grid Co [K-GD2013-0501]
Zeolite was synthesized from coal fly ash by a fusion method and was used for the removal of heavy metal ions (Pb2+, Cd2+, Cu2+, Ni2+, and Mn2+) in aqueous solutions. Batch method was employed to study the influential parameters such as adsorbent dosage, pH, and coexisting cations. Adsorption isotherms and kinetics studies were carried out in single-heavy and multiheavy metal systems, respectively. The Langmuir isotherm model fitted to the equilibrium data better than the Freundlich model did, and the kinetics of the adsorption were well described by the pseudo-second-order model, except for Cd2+ and Ni2+ ions which were fitted for the pseudo-first-order model in the multiheavy metal system. The maximum adsorption capacity and the distribution coefficients exhibited the same sequence for Pb2+ > Cu2+ > Cd2+ > Ni2+ > Mn2+ in both single- and multiheavy metal systems. In the end, the adsorption capacity of zeolite was tested using industrial wastewaters and the results demonstrated that zeolite could be used as an alternative adsorbent for the removal of heavy metal ions from industrial wastewater.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据