Han Ying, Huang Junkai, Liu Hongyuan, Wu Yue, Wu Zhao, Zhang Kemin, Lu Qingjie
College of Civil Engineering and Architecture, Zhejiang University of Technology Hangzhou 310023 P. R. China
RSC Adv. 2020 May 20;10(33):19247-19253. doi: 10.1039/d0ra02113j.
The reduction of -chloronitrobenzene (-CNB) by sulfate green rust (GR ) was systematically studied. The results revealed that GR has a good removal effect on -CNB. The removal efficiencies of -CNB by GR improved with the increase of the pH value. The removal efficiencies in the presence of ions were better than that of GR alone, while natural organic matter (NOM) could adsorb -CNB, which competed with GR . The reductions of -CNB by GR under different conditions followed pseudo-first-order reaction kinetics except for the reactions in the presence of NOM. -CNB was converted into -chloroaniline (-CAN), which produced -nitrosochlorobenzene and -chlorophenylhydroxylamine as the intermediate products. The results of the X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed GR was gradually transformed into goethite. Fe(ii) in the GR structure was the main electron donor involved in the reaction.
系统研究了硫酸绿锈（GR ）对间氯硝基苯（-CNB）的还原作用。结果表明，GR 对 -CNB 具有良好的去除效果。GR 对 -CNB 的去除效率随 pH 值的升高而提高。离子存在时的去除效率优于单独的 GR ，而天然有机物（NOM）可吸附 -CNB，与 GR 形成竞争。除了在 NOM 存在下的反应外，GR 在不同条件下对 -CNB 的还原遵循准一级反应动力学。-CNB 转化为间氯苯胺（-CAN），并产生亚硝基氯苯和间氯苯羟胺作为中间产物。X 射线衍射（XRD）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）的结果表明 GR 逐渐转化为针铁矿。GR 结构中的 Fe（ii）是参与反应的主要电子供体。
