| 钙基膨润土对水相中铜离子的吸附 |
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| 引用本文： | 朱一民,王忠安,苏秀娟,魏德洲.钙基膨润土对水相中铜离子的吸附[J].东北大学学报(自然科学版),2006,27(1):99-102. |
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| 作者姓名： | 朱一民 王忠安 苏秀娟 魏德洲 |
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| 作者单位： | 东北大学,资源与土木工程学院,辽宁,沈阳,110004 |
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| 基金项目： | 中国科学院资助项目，辽宁省自然科学基金 |
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| 摘 要： | 通过考察吸附条件对吸附率及吸附负载量的影响,研究了钙基膨润土对水相中铜离子的吸附特性.实验结果表明,钙基膨润土对铜离子有较好的吸附效果;钙基膨润土对铜离子的吸附在15 min就达到吸附平衡;铜离子的吸附在15 min就达到吸附平衡;当铜离子初始质量浓度为190.6 mg/L,pH=6.03,t=20℃,吸附时间τ=15 min,吸附剂用量为10 g/L时,膨润土对铜离子的吸附率为94%.对初始质量浓度为635.4 mg/L的铜离子溶液,膨润土对铜离子的吸附率仍达57%.从吸附前后膨润土的扫描电镜图片和X射线衍射图谱对比分析可知,膨润土对铜离子的吸附不仅有表面和孔道吸附,还存在着晶层间吸附.
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| 关 键 词： | 钙基膨润土 铜离子 吸附 水处理 重金属 |
| 文章编号： | 1005-3026（2006）01-0099-04 |
| 收稿时间： | 2005-03-30 |
| 修稿时间： | 2005-03-30 |
Adsorption of Cu2+ by Ca-Bentonite in Wastewater |
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| ZHU Yi-min,WANG Zhong-an,SU Xiu-juan,WEI De-zhou.Adsorption of Cu2+ by Ca-Bentonite in Wastewater[J].Journal of Northeastern University(Natural Science),2006,27(1):99-102. |
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| Authors: | ZHU Yi-min WANG Zhong-an SU Xiu-juan WEI De-zhou |
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| Institution: | (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China |
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| Abstract: | The adsorption of copper ions by Ca-bentonite in wastewater was investigated experimentally. The results indicated that such a biosorbent has favorable adsorbing effect on copper ions, and the adsorption equilibrium comes about within 15 minutes. When the dose of Ca-bentonite is 10 g/L with the concentration of Cu up to 190.6 g/L the biosorbing rate is 94.0%, while the concentration of Cu2+ up to 635.4 g/L the biosorbing rate is 57.0%. The XRD analysis shows that the process of copper ions by Ca-bentonite indicates not only the surface and pore adsorption but also the crystal-interlamination adsorption by the bentonite. |
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| Keywords: | Ca-bentonite copper ions adsorption wastewater treatment heavy metals |
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