| HMP和SDS在KMnO4氧化水溶相PCE中的联合效应 |
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| 引用本文： | 窦 颖,邱兆富,胡 林,吕树光,隋 倩,陈梦帆.HMP和SDS在KMnO4氧化水溶相PCE中的联合效应[J].环境科学研究,2014,27(5):534-539. |
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| 作者姓名： | 窦 颖 邱兆富 胡 林 吕树光 隋 倩 陈梦帆 |
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| 作者单位： | 华东理工大学资源与环境工程学院;国家环境保护化工过程环境风险评价与控制重点实验室; |
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| 基金项目： | 上海市自然科学基金面上项目(12ZR1408000);国家环境保护公益性行业科研专项(201109013) |
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| 摘 要： | 利用KMnO4原位化学氧化法处理污染地下水中的氯代烯烃已被证实有效可行,但是反应中产生的MnO2沉淀会影响修复效果,延长修复时间.采用KMnO4氧化法处理水溶相的PCE(四氯乙烯),研究了添加HMP(六偏磷酸钠)和SDS(十二烷基磺酸钠)对该反应的联合效应.结果表明,离子强度对MnO2沉淀的生成影响显著,离子强度越高,MnO2沉淀生成得越快.在20℃,ρ(PCE)初始值为20 mgL,n(KMnO4)∶n(PCE)为15∶1,离子强度为0.1 molL的条件下,单独添加HMP可减少反应过程中MnO2沉淀的产生,ρ(HMP)为0.1 gL的条件下,24 h内没有产生MnO2沉淀;单独添加SDS可增加Cl-生成量,在ρ(SDS)为1.0 gL的条件下,Cl-生成量增加了8.2%,但会增大MnO2沉淀的生成速率;在同时添加HMP〔(ρ(HMP)为0.1 gL)〕和SDS〔(ρ(SDS)为1.0 gL)〕的条件下,Cl-生成量增加了7.5%,并且24 h内没有产生MnO2沉淀,表明二者同时添加既可提高PCE的去除率又可减缓MnO2沉淀的生成.
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| 关 键 词： | 四氯乙烯 KMnO 六偏磷酸钠 十二烷基磺酸钠 MnO沉淀 |
| 收稿时间： | 2013/7/11 0:00:00 |
| 修稿时间： | 2014/2/17 0:00:00 |
Co-Effects of HMP and SDS on PCE Oxidation Performance by KMnO4in Aqueous Solutions |
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| Institution: | State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China and State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | |
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| Keywords: | tetrachloroethylene potassium permanganate sodium hexametaphosphate sodium dodecyl sulfonate manganese dioxide precipitate |
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