污染控制技术原理与工艺
边绍伟,王敏,杨睿媛,王文锋,沈忠群.苯胺水溶液的电子束辐照降解[J].环境科学学报,2006,26(1):27-31
苯胺水溶液的电子束辐照降解
- Electron beam degradation of aniline in aqueous solution
- 基金项目：国家自然科学基金项目(No.10175086)
- 作者
- 单位
- 边绍伟
- 中国科学院上海应用物理研究所, 上海 201800
- 王敏
- 中国科学院上海应用物理研究所, 上海 201800
- 杨睿媛
- 中国科学院上海应用物理研究所, 上海 201800
- 王文锋
- 中国科学院上海应用物理研究所, 上海 201800
- 沈忠群
- 中国科学院上海应用物理研究所, 上海 201800
- 摘要：以苯胺类化合物中的苯胺为具体对象,进行了苯胺水溶液受到电子束辐照后的降解过程和特性研究,分别考察了吸收剂量、溶液初始浓度、溶液初始pH和过氧化氢加入量等因素对苯胺辐照降解效果的影响.实验结果表明,电子束辐照可以有效降解水溶液中的苯胺,当苯胺初始浓度为70 mg·L-1,吸收剂量为23.7 kGy时,苯胺降解率可达91%,COD去除率可达27%.过氧化氢的加入能够明显地提高苯胺的降解效果,COD去除率最高可达98%.溶液初始pH在2.0～11.0范围内,pH对苯胺的辐射降解影响较小.
- Abstract：Degradation of aniline in aqueous solution was investigated with 1.5 MeV electron beams. Efficiencies of the aniline degradation and COD removal were evaluated with different doses of the EB irradiation at different initial concentrations and pH values of the aniline solution, or by introducing H2O2 into the solution or not. The results showed that electron beams degraded effectively the aniline contents in aqueous solution. The aniline degradation and COD removal efficiencies reached 91% and 27%, respectively, at an initial aniline concentration of 70mg/L by a 23.7kGy EB irradiation. And the presence of H2O2 in the solution could be of great help to increase the aniline degradation and COD removal efficiencies.
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