| 膨润土对重金属离子Pb~(2+),Zn~(2+),Cr(VI),Cd~(2+)的吸附性能 |
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| 引用本文： | 施惠生,刘艳红.膨润土对重金属离子Pb~(2+),Zn~(2+),Cr(VI),Cd~(2+)的吸附性能[J].建筑材料学报,2006(5). |
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| 作者姓名： | 施惠生 刘艳红 |
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| 作者单位： | 同济大学先进土木工程材料教育部重点实验室，同济大学环境材料研究所 上海200092，同济大学环境材料研究所，上海200092，上海200092，上海工程技术大学材料工程学院，上海201620 |
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| 基金项目： | 国家自然科学基金资助项目(20277027) |
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| 摘 要： | 试验研究了pH值、吸附时间和吸附剂用量对膨润土吸附重金属离子Pb2 ,Zn2 ,Cr(VI)和Cd2 的影响.结果表明,在本试验的pH值、吸附时间及吸附剂用量条件下,膨润土对Pb2 ,Zn2 ,Cd2 的吸附效果均优于其对Cr(VI)的吸附效果;pH值是影响上述吸附的重要因素,离子交换和表面络合是上述吸附的主要形式.
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| 关 键 词： | 膨润土 重金属 Pb2 Zn2 Cr(VI) Cd2 吸附作用 |
Adsorption Characteristics of Bentonite to Pb~(2+),Zn~(2+),Cr(VI),Cd~(2+) |
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| SHI Hui-sheng.Adsorption Characteristics of Bentonite to Pb~(2+),Zn~(2+),Cr(VI),Cd~(2+)[J].Journal of Building Materials,2006(5). |
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| Authors: | SHI Hui-sheng |
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| Affiliation: | SHI Hui-sheng~ |
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| Abstract: | The actors of influence in using bentonite to adsorb Pb~(2 ),Zn~(2 ),Cr(VI),Cd~(2 ) were discussed.The adsorption was tested under laboratory conditions as a functions of pH,adsorption time and quantity of bentonite.The results of this research show that the adsorption capacity of bentonite to Pb~(2 ),Zn~(2 ),Cd~(2 ) is better than to Cr(VI) and the adsorption capacity strongly depends on pH.The research also indicates that the adsorption form may be mainly surface complex and ions exchange. |
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| Keywords: | bentonite heavy metal Pb~(2 ) Zn~(2 ) Cr(VI) Cd~(2 ) adsorption |
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