Rapid reductive destruction of hazardous organic compounds by nanoscale Fe0
Rapid reductive destruction of hazardous organic compounds by nanoscale Fe0
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DOI：
10.1016/s0045-6535(00)00147-8
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发表时间：
2001-02-01
期刊：
影响因子：
8.8
通讯作者：
Khim, J
中科院分区：
文献类型：
--
作者：
Choe, S;Lee, SH;Khim, J
Fe-0对水相中有害有机化合物如氯代有机化合物(COCs)和硝基芳香族化合物(NaCS)的还原破坏是一项最新的创新技术。本文研究了合成纳米Fe-0在厌氧间歇系统中对COCs和NaCS的快速还原降解。纳米Fe-0具有高比表面积和高活性的特点，在环境条件下能迅速转化为三氯乙烯(TCE)、氯仿(CF)、硝基苯(NB)、硝基甲苯(NT)、二硝基苯(DNB)和二硝基甲苯(DNT)，导致母体化合物在几分钟内从水相中完全消失。GC分析表明，TCE和CF脱氯的主要产物是乙烷和甲烷，NaCS中的大部分硝基被还原为胺基。这些结果表明，纳米级Fe-0的快速还原破坏是一种潜在的可行的就地或地上处理被危险有机化合物污染的地下水的方法，包括COCs和NaCS。(C)2000由爱思唯尔科学有限公司出版。版权所有。
Fe-0-mediated reductive destruction of hazardous organic compounds such as chlorinated organic compounds (COCs) and nitroaromatic compounds (NACs) in the aqueous phase is one of the latest innovative technologies. In this paper, rapid reductive degradation of COCs and NACs by synthesized nanoscale Fe-0 in anaerobic batch systems was presented. The nanoscale Fe-0, characterized by high specific surface area and high reactivity, rapidly transformed trichloroethylene (TCE), chloroform (CF), nitrobenzene (NB), nitrotoluene (NT), dinitrobenzene (DNB) and dinitrotoluene (DNT) under ambient conditions, which results in complete disappearance of the parent compounds from the aqueous phase within a few minutes. GC analysis reported that the main products of the dechlorination of TCE and CF were ethane and methane as well as that most of the nitro groups in NACs were reductively transformed to amine groups. These results suggest that the rapid reductive destruction by nanoscale Fe-0 is potentially a viable in situ or aboveground treatment of groundwater contaminated with hazardous organic compounds including COCs and NACs. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.