| NZVI/Na2S2O8/超声复合法降解污染土壤PCB-29 |
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| 引用本文： | 刘建福,李青松,郭淑娟.NZVI/Na2S2O8/超声复合法降解污染土壤PCB-29[J].中国环境科学,2018,38(7):2646-2651. |
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| 作者姓名： | 刘建福 李青松 郭淑娟 |
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| 作者单位： | 1. 厦门理工学院环境科学与工程学院, 福建 厦门 361024;
2. 环境生物技术福建省高等学校重点实验室, 福建 厦门 361024 |
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| 基金项目： | 国家自然科学基金资助项目（51008261） |
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| 摘 要： | 多氯联苯（polychlorinated biphenyls，PCBs）是一类具有高毒性、难降解的有机化合物，为了研发土壤中多氯联苯（PCBs）污染物高效处理技术，本研究采用PCBs中的2，4，5-三氯联苯（PCB-29）作为研究对象，以纳米零价铁（NZVI）活化Na2S2O8，再辅以超声氧化对土壤中PCB-29进行降解试验，结果表明，NZVI/Na2S2O8/超声复合法对污染土壤中PCB-29具有很好的去除效果，降解反应时间为1h时，去除率最高可达86.37%；NZVI/Na2S2O8/超声复合法对PCB-29最佳降解条件为土壤初始pH值为5.0，Na2S2O8浓度为12mmol/L，Na2S2O8/NZVI物质的量比1：1.
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| 关 键 词： | 纳米零价铁 PCB-29 过硫酸钠 土壤污染 |
| 收稿时间： | 2017-11-13 |
Treatment of 2,4,5-trichlorobiphenyl in soil with nanometer zero-valent iron and Na2S2O8 coupled with ultrasonic composite method |
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| LIU Jian-fu,LI Qing-song,GUO Shu-juan.Treatment of 2,4,5-trichlorobiphenyl in soil with nanometer zero-valent iron and Na2S2O8 coupled with ultrasonic composite method[J].China Environmental Science,2018,38(7):2646-2651. |
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| Authors: | LIU Jian-fu LI Qing-song GUO Shu-juan |
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| Institution: | 1. Department of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361024, China;
2. Key Laboratory of Environmental Biotechnology, Fujian Province University, Xiamen 361024, China |
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| Abstract: | Polychlorinated biphenyls (PCBs) are a group of highly toxic and bio-refractory organic compounds. In order to improve the treatment efficiency of PCBs in soil, 2,4,5-trichlorobiphenyl (PCB-29) was chosen as a model pollutant in this study. The degradation experiments of PCB-29 were performed with nanometer zero-valent iron (NZVI) activation sodium persulfate, and coupled with ultrasonic oxidation. The results indicated that the PCB-29 removal rate was 86.37% in one hour by NZVI/Na2S2O8/ultrasonic composite treatment. The optimal degradation conditions of PCB-29with NZVI/Na2S2O8/ultrasonic composite method are soil initial pH 5.0, Na2S2O8 concentration 12mmol/L, the molar ratio of Na2S2O8/NZVI 1:1. |
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| Keywords: | nanometer zero-valent iron 2 4 5-trichlorobiphenyl Na2S2O8 soil pollution |
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