| 改性没食子酸对Cu~(2+)和Pb~(2+)吸附沉淀性能的研究 |
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| 引用本文： | 李怡,罗学刚.改性没食子酸对Cu~(2+)和Pb~(2+)吸附沉淀性能的研究[J].材料导报,2009,23(18). |
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| 作者姓名： | 李怡 罗学刚 |
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| 作者单位： | 西南科技大学生命科学与工程学院,绵阳,621010 |
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| 基金项目： | 国家科技支撑计划课题资助 |
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| 摘 要： | 以含单宁量98.50%的没食子酸为原料,通过磺化一胺甲基化反应制得改性没食子酸,研究了改性没食子酸对金属Cu2+和Pb2+的吸附沉淀,以及初始溶液pH值、金属溶液初始质量浓度、平衡吸附温度对Cu2+和pb2+吸附沉淀容量的影响及规律.结果表明,吸附沉淀剂对Cu2+、Pb2+的吸附平衡符合Freundlich方程,pH值和初始质量浓度对吸附沉淀量的影响最显著.综合认为改性没食子酸对Cu2+、Pb2+的吸附沉淀机理基本一致.
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| 关 键 词： | 没食子酸 吸附沉淀 |
Adsorption and Deposition of Cu~(2+) and Pb~(2+) from Aqueous Solution by Modified Gallic Acid |
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| LI Yi,LUO Xuegang.Adsorption and Deposition of Cu~(2+) and Pb~(2+) from Aqueous Solution by Modified Gallic Acid[J].Materials Review,2009,23(18). |
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| Authors: | LI Yi LUO Xuegang |
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| Affiliation: | LI Yi,LUO Xuegang(School of Life Science , Technology,Southwest University of Science , Technology,Mianyang 621010) |
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| Abstract: | Gallic acid is modified by sulfonated-mannich.The new absorbent is investigated for adsorption removal of Cu2+ and Pb2+ in aqueous solution.The effects of pH values,initial metal ions concentrations and temperatures on adsorption capacities of Cu2+ and Pb2+ are considered.The results indicate that the adsorption isotherms are well-fitted by the Freundlich models,and the pH values and initial concentrations are the main influence factors.All these demonstrate that the mechanism of adsorption is basically sim... |
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| Keywords: | Cu2+ Pb2+ |
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