| 地下水化学成分对植物油改性纳米铁还原硝基苯影响 |
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| 引用本文： | 董军,王敏,刘登峰,李文德,钟笛,温春宇,秦传玉.地下水化学成分对植物油改性纳米铁还原硝基苯影响[J].中国环境科学,2014,34(7):1769-1775. |
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| 作者姓名： | 董军 王敏 刘登峰 李文德 钟笛 温春宇 秦传玉 |
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| 作者单位： | 吉林大学环境与资源学院;吉林大学;地下水资源与环境教育部重点实验室; |
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| 基金项目： | 国家自然科学基金项目(41272253);吉林省自然科学基金面上项目(20130101027JC) |
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| 摘 要： | 研究了不同地下水化学成分(pH值、Ca2+、Fe2+、Cl-、SO42-)对VOMNI降解硝基苯(NB)的影响.结果表明,经乳化油改性后,纳米铁团聚现象得到改善,分散性提高;VOMNI对硝基苯的还原过程符合一级反应动力学方程,反应速率常数为0.0783min-1;酸性条件下更有利于硝基苯的降解和苯胺的生成;钙硬度对VOMNI还原硝基苯有抑制作用;Fe2+、SO42-、Cl-对硝基苯的降解和苯胺的生成有一定的促进作用.
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| 关 键 词： | 植物油改性纳米铁 硝基苯 水化学组成 还原效率 |
| 收稿时间： | 2013-12-30 |
Effects of groundwater chemical composition on nitrobenzene reduction by vegetable oil modified nano-iron |
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| DONG Jun,WANG Min,LIU Deng-Feng,LI Wen-De,ZHONG Di,WEN Chun-Yu,QIN Chuan-Yu.Effects of groundwater chemical composition on nitrobenzene reduction by vegetable oil modified nano-iron[J].China Environmental Science,2014,34(7):1769-1775. |
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| Authors: | DONG Jun WANG Min LIU Deng-Feng LI Wen-De ZHONG Di WEN Chun-Yu QIN Chuan-Yu |
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| Abstract: | A series of batch experiments were conducted to study the influencing factors for nitrobenzene degradation by vegetable oil modified nano-iron (VOMNI), the factors included pH、Ca2+、Fe2+、Cl-、SO42-. The results indicated that: VOMNI was well-dispersed and could stay more stable in water compared with NZVI; the reduction of nitrobenzene by VOMNI was well fitted to pseudo-first-order kinetic model, and its observed rate constant kobs was 0.0783min-1; acidic conditions were favorable to the degradation of nitrobenzene and the formation of aniline; nitrobenzene reduction was inhibited by Ca2+; Fe2+, SO42- and Cl- could promote the nitrobenzene reduction and anline formation. |
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| Keywords: | vegetable oil modified nano-iron nitrobenzene (NB) hydrochemical constituents deoxidization efficiency |
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