| 流变相法制备包覆型CMC-Fe0及降解水中TCE的研究 |
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| 引用本文： | 樊文井,成岳,余淑贞,范小丰.流变相法制备包覆型CMC-Fe0及降解水中TCE的研究[J].环境科学,2015,36(6):2161-2167. |
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| 作者姓名： | 樊文井 成岳 余淑贞 范小丰 |
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| 作者单位： | 景德镇陶瓷学院环境科学与工程系,景德镇,333403 |
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| 基金项目： | 国家自然科学基金项目(56218018);江西省高校中青年教师发展计划访问学者项目 |
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| 摘 要： | 以廉价环保的羧甲基纤维素钠(CMC)为表面修饰剂,采用流变相反应法制备包覆型纳米零价铁(CMC-Fe0),用XRD、SEM和TEM、氮气吸附-脱附手段对样品进行表征,并利用合成的零价铁粒子对三氯乙烯(TCE)进行还原脱氯反应.结果表明,当CMC-Fe0投加量为6 g·L-1,TCE初始浓度为5 mg·L-1时,反应40 h去除率达100%.包覆型CMC-Fe0对TCE的还原反应符合准一级反应动力学.最后,对反应产物进行了简单易行的回收.
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| 关 键 词： | 流变相法 包覆型CMC-Fe0 TCE 降解率 反应动力学 |
| 收稿时间： | 2014/11/23 0:00:00 |
| 修稿时间： | 1/9/2015 12:00:00 AM |
Preparation of Coated CMC-Fe0 Using Rheological Phase Reaction Method and Research on Degradation of TCE in Water |
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| FAN Wen-jing,CHENG Yue,YU Shu-zhen and FAN Xiao-feng.Preparation of Coated CMC-Fe0 Using Rheological Phase Reaction Method and Research on Degradation of TCE in Water[J].Chinese Journal of Environmental Science,2015,36(6):2161-2167. |
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| Authors: | FAN Wen-jing CHENG Yue YU Shu-zhen and FAN Xiao-feng |
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| Institution: | Department of Environmental Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;Department of Environmental Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;Department of Environmental Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;Department of Environmental Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China |
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| Abstract: | The coated nanoscale zero-valent iron (coated CMC-Fe0) was synthesized with cheap and environment friendly CMC as the coating agent using rheological phase reaction. The sample was characterized by means of XRD, SEM, TEM and N2 adsorption-stripping and used to study reductive dechlorination of TCE. The experimental results indicated that the removal rate of TCE was about 100% when the CMC-Fe0 dosage was 6 g·L-1, the initial TCE concentration was 5 mg·L-1 and the reaction time was 40 h. The TCE degradation reaction of coated CMC-Fe0 followed a pseudo- first-order kinetic model. Finally, the product could be simply recovered. |
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| Keywords: | rheological phase reaction method coated CMC-Fe0 TCE removal rate reaction kinetics |
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