| 膨润土吸附水中Zn2+的影响因素研究 |
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| 引用本文： | 孟庆梅,孙晨光,刘晓东,丁述理.膨润土吸附水中Zn2+的影响因素研究[J].金属矿山,2009,39(8):149. |
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| 作者姓名： | 孟庆梅 孙晨光 刘晓东 丁述理 |
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| 作者单位： | 1.山东理工大学；2.淄博永辰环境影响评价有限公司；3.淄博市环境监测站；4.河北工程学院 |
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| 基金项目： | 河北省自然科学基金项目，河北省科技厅博士基金项目 |
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| 摘 要： | 研究了邯郸钙基膨润土及其钠化土对Zn2+的吸附行为，考察了溶液中Zn2+的初始浓度、液固比、pH值、吸附时间、搅拌速度、温度、膨润土粒度等因素对膨润土吸附的影响。结果表明：钙基膨润土及其钠化土对Zn2+的吸附在2 h时都基本达到平衡；提高溶液的pH值、吸附温度和搅拌速度，延长吸附时间，降低膨润土的粒度、Zn2+的初始浓度和液固比，都能不同程度地提高膨润土对Zn2+的吸附率；在混合体系中，共存离子Pb2+对两种膨润土吸附Zn2+的效果都几乎没有影响，而Cr6+却会降低?街峙蛉笸炼訸n2+的吸附率。
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| 关 键 词： | 膨润土 Zn2+ 吸附 |
Factors for Removal of Zinc Cation from Aqueous solution by Bentonite |
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| Meng Qingmei,Sun Chenguang,Liu Xiaodong,Ding Shuli.Factors for Removal of Zinc Cation from Aqueous solution by Bentonite[J].Metal Mine,2009,39(8):149. |
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| Authors: | Meng Qingmei Sun Chenguang Liu Xiaodong Ding Shuli |
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| Affiliation: | 1.Shandong University of Technology；2.Zibo Yongchen Environmental Impact Assessment Co., Ltd.；3.Zibo Environmental Monitoring Center；4.Hebei University of Engineering |
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| Abstract: | The removal of zinc cations from aqueous solution by Ca-bentonite and Na-exchanged bentonite was studied.Such factors of affecting the adsorption of bentonite as the initial concentration of Zn2+, the liquid-to-solid ratio, pH value, adsorption time, stirring speed, temperature, and bentonite particle are investigated.The results showed that the removal of Zn2+ by Ca-bentonite and Na-exchanged bentonite can be equal at 2 h.The removal rate of Zn2+ by bentonite can be improved in various degree by increasing pH value, adsorption temperature, stirring speed, time extension, and decreasing bentonite particle, the initial concentration of Zn2+, and the liquid-to-solid ratio.In a complex system, Pb2+ has not influenced the removal of Zn2+ by both of bentonites, while Cr6+ can decease it. |
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| Keywords: | Zn2+ |
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