| 沸石粉对溶液中铜的吸附性能研究 |
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| 引用本文： | 李见云 郑宾国 化全县 刘军坛 冉桂花. 沸石粉对溶液中铜的吸附性能研究[J]. 中国农学通报, 2011, 27(14): 240-243 |
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| 作者姓名： | 李见云 郑宾国 化全县 刘军坛 冉桂花 |
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| 作者单位： | 1. 郑州航空工业管理学院土木建筑工程学院,郑州,450015
2. 国家钙镁磷复合肥技术研究推广中心,郑州大学化工与能源学院,郑州450001;土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,南京210008 |
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| 基金项目： | 土壤与农业可持续发展国家重点实验室开放基金项目 |
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| 摘 要： | 沸石粉是广泛用来控制和修复重金属污染土壤的无机材料，为了探究沸石钝化重金属Cu2+的作用机理，笔者通过批次振荡试验研究了沸石粉吸附溶液中Cu2+的热力学和动力学过程。结果表明，等温吸附过程极显著遵循Langmuir和Freundlich方程，沸石粉中Cu2+的最大吸附容量为3.839 g Cu/kg，为优惠型吸附。吸附动力学极显著符合Lagergren准二级、Elovich和双常数方程，为快速吸附过程，吸附速率主控步骤为液膜扩散。△G<0，△H>0，△S>0，表明沸石吸附溶液中Cu2+的过程为自发吸热熵推动反应。
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| 关 键 词： | 铜尾矿 铜尾矿 高浓度 生长 杂草 耐性 |
| 收稿时间： | 2011-02-15 |
| 修稿时间： | 2011-03-02 |
Adsorption Characteristics of Copper in Water Solution onto Zeolite |
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| Li Jianyun,Zheng Binguo,Hua Quanxian,Liu Juntan,Ran Guihua. Adsorption Characteristics of Copper in Water Solution onto Zeolite[J]. Chinese Agricultural Science Bulletin, 2011, 27(14): 240-243 |
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| Authors: | Li Jianyun Zheng Binguo Hua Quanxian Liu Juntan Ran Guihua |
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| Affiliation: | Li Jianyun 1,Zheng Binguo 1,Hua Quanxian 2,3,Liu Juntan 1,Ran Guihua 1 ( 1 School of Civil Engineering,Zhengzhou Institute of Aeronautical Industry Management,Zhengzhou 450015,2 National Centre of Research & Popularization on Calcium,Magnesium,Phosphate and Compound Fertilizer Technology,School of Chemical Engineering and Energy,Zhengzhou University,Zhengzhou 450001,3 State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing... |
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| Abstract: | Zeolite is an extensively used inorganic material for control and remediation of heavy metal contaminated soil. In order to explore the passivation mechanism of Cu 2+ by zeolite, the batch experiments were conducted to investigate adsorption thermodynamics and kinetics characteristics of Cu 2+ in water solution onto zeolite. Results showed adsorption equilibrium data were well significantly fitted by Langmuir and Freundlich isotherms, and the process belonged to favorable adsorption. The theoretical saturat... |
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| Keywords: | zeolite copper adsorption thermodynamics kinetics |
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