| 铜氰溶液的电子束辐照降解 |
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| 引用本文： | 胡媛,胡湖生,杨明德,黄慧萍,冯海兵. 铜氰溶液的电子束辐照降解[J]. 环境污染与防治, 2009, 31(1) |
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| 作者姓名： | 胡媛 胡湖生 杨明德 黄慧萍 冯海兵 |
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| 作者单位： | 中国地质大学,武汉,材料科学与化学工程学院,湖北,武汉,430074;清华大学核能与新能源技术设计研究院,北京,102201 |
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| 摘 要： | 研究了铜氰溶液中总氰初始浓度、pH、铜浓度等对总氰降解效率的影响,比较了KCN溶液和铜氰溶液的总氰降解率,初步推断了铜氰溶液在辐照过程中的降解机制.实验结果表明,在同样的辐照剂量下,随着总氰初始浓度的增加,总氰降解率降低,相应的总氰降解G值增大;铜浓度越低,总氰降解率越高;pH越小的铜氰溶液总氰降解率越高.电子束辐照KCN溶液和铜氰溶液的总氰降解反应属于表观一级反应.在相同的辐照剂量下,KCN溶液的总氰降解率比铜氰溶液要高得多.铜氰溶液的电子束辐照降解过程非常复杂,主要是铜氰络合离子逐步离解出的CN-与·OH的反应.
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| 关 键 词： | 电子束 辐照降解 铜氰 动力学 |
Radiolysis of copper cyanide solution by electron-beam irradiation |
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| Hu Yuan,Hu Husheng,Yang Mingde,Huang Huiping,Feng Haibing. Radiolysis of copper cyanide solution by electron-beam irradiation[J]. Environmental Pollution & Control, 2009, 31(1) |
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| Authors: | Hu Yuan Hu Husheng Yang Mingde Huang Huiping Feng Haibing |
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| Affiliation: | 1.Department of Material Science and Chemical Engineering;China University of Geosciences;Wuhan Hubei 430074;2.Institute of Nuclear and New Energy Technology;Tsinghua University;Beijing 102201 |
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| Abstract: | The aqueous phase experiments of cyanide degradation by electron beam were performed to determine the effects of reaction conditions,such as initial total cyanide concentration (TCN),solution pH,and copper concentration,on the decomposition rate of copper cyanide. The irradiated copper cyanide solution samples were analyzed by the UV spectrophotomotry method. The results show that the degradation efficiency decreased,while the G value increased,with the increasing TCN concentration. The TCN degradation effi... |
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| Keywords: | electron beam irradiative degradation copper cyanide kinetic |
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