铁(II)对转炉炉渣非生物降解硝基芳香族化合物的研究

Jun Yu Li, Li Xie, Fubo Luan, J. Sheng, Qi Zhou
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引用次数: 0

摘要

研究了炼钢渣(SCS)与铁(II)对3种硝基芳香族化合物(NACs)的非生物降解。实验结果表明,在钢转炉炉渣水溶液中,Fe(II)容易将硝基苯(NB)、对氯硝基苯(P-ClNB)和2,4 -二硝基甲苯(2,4dnt)还原为相应的苯胺。还原的初始动力学可以用拟一阶动力学方程很好地描述。HPLC结果表明,NACs的还原主要涉及硝基,还原途径为:硝基- rarr亚硝基- rarr羟氨基- rarr氨基。研究结果表明,在人工湿地或饱和土壤含水层等以SCS为基质的缺氧环境中,吸附在SCS表面的Fe(II)可能对芳香族污染物的非生物还原起重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Abiotic Degradation of Nitroaromatic Compounds by Steel Converter Slag with Fe(II)
The abiotic degradation of 3 nitroaromatic compounds (NACs) by steel converter slag(SCS) with Fe(II) was investigated in this study. Experimental results showed that in aqueous solutions of steel converter slag, Fe(II) readily reduce nitrobenzene (NB), p-chloronitrobenzene (P-ClNB) and 2, 4-dinitrotoluene (2, 4DNT) to the corresponding anilines. The initial kinetics of the reduction could be well described by pseudo-first-order dynamical equation. The HPLC results illustrated that the reduction of NACs mainly involved with the nitro groups with the reduction pathway of: nitro- rarr nitroso- rarr hydroxamino- rarr amino-. Our findings suggested that Fe(II) adsorbed on SCS surfaces may play an important role in abiotic reduction of aromatic pollutants in anoxic environment such as constructed wetland or saturated soil aquifer where SCS is used as substrate.
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