| 重金属在碳酸钙—水界面间的沉淀反应特征 |
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| 引用本文： | 吴宏海,侯宝利,胡勇有,黄瑞敏.重金属在碳酸钙—水界面间的沉淀反应特征[J].矿物岩石,2001,21(2):22-25. |
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| 作者姓名： | 吴宏海 侯宝利 胡勇有 黄瑞敏 |
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| 作者单位： | 1. 华南理工大学造纸与环境工程学院,
2. 东莞市长安镇环保办, |
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| 基金项目： | 华南理工大学自然科学基金项目 (E5 -3 2 0 -0 80 )，广东省博士后科学基金项目 |
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| 摘 要： | 首先进行Cu^2 ,Pb^2 和Cd^2 等重金属离子溶液与方解石和轻质碳酸钙间的沉淀反应实验，然后对方解石与重金属离子的反应产物作了SEM观察与EDS能谱分析，研究表明，在本文的实验条件下，重金属与碳酸钙间的表面反应主要表现为表面沉淀，其中，Cd^2 离子在界面中的行为还涉及晶格扩散作用。
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| 关 键 词： | 重金属 沉淀反应 扫描电子显微镜 表面反应 铜 铅 镉 碳酸钙－水界面 |
| 文章编号： | 1001-6872(2001)02-0022-04 |
THE CHARACTERISTICS OF PRECIPITATION REACTIONS OF HEAVY METALIONS AT CARBONATE WATER INTERFACE |
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| WU Hong hai HOU Bao li HU Yong you HUANG Rui min Paper & Environmental Engineering College,South China University of Technology,Guangzhou.THE CHARACTERISTICS OF PRECIPITATION REACTIONS OF HEAVY METALIONS AT CARBONATE WATER INTERFACE[J].Journal of Mineralogy and Petrology,2001,21(2):22-25. |
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| Authors: | WU Hong hai HOU Bao li HU Yong you HUANG Rui min Paper & Environmental Engineering College South China University of Technology Guangzhou |
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| Institution: | WU Hong hai 1 HOU Bao li 2 HU Yong you 1 HUANG Rui min 1 1 Paper & Environmental Engineering College,South China University of Technology,Guangzhou 510640 |
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| Abstract: | In this paper,the experiments on reactions of heavy metal ions,involving Cu 2+ ,Pb 2+ and Cd 2+ ,with calcium carbonate(calcite and light mass CaCO 3) were first carried out,and then the surface reactants of the heavy metal ions with calcite were investigated by methods of SEM and EDS.The study results showed that the surface reactions of the heavy metal ions with calcium carbonate were mainly precipitation under the given experimental conditions.Another behavior of Cd 2+ ions at calcium carbonate water interface was diffusion of Cd 2+ ions into calcite crystal lattice,resulting in disappearance of the surface adsorption layers containing Cd 2+ ions on calcite after a long period of (reaction 70 days). |
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| Keywords: | calcium carbonate heavy metals precipitation reactions scanning electron microscope |
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