文献类型：期刊文献

英文题名：Immobilization of nanoscale zero valent iron on organobentonite for accelerated reduction of nitrobenzene

作者：Ren, Caixia[1,2,3];Li, Yimin[1];Li, Jianfa[1];Sheng, Guodong[1];Hu, Liujiang[1];Zheng, Xuming[2,3]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China;[2]Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China;[3]Zhejiang Sci Tech Univ, State Key Lab ATMMT MOE, Hangzhou 310018, Peoples R China

年份：2014

卷号：89

期号：12

起止页码：1961

外文期刊名：JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000344377100021)、、EI(收录号：20143600036128)、Scopus(收录号：2-s2.0-84911404479)、WOS

基金：This work was supported by the National Natural Science Foundation of China (20977063, 21177088).

语种：英文

外文关键词：nitrobenzene; reduction; nanoscale zerovalent iron; organobentonite; synergetic effect

外文摘要：BACKGROUNDNitrobenzene (NB) is a persistent environmental pollutant difficult to degrade. The aim of this study was to accelerate the reduction of NB by immobilization of nanoscale zero-valent iron (NZVI) on an organobentonite (CTMA-Bent). RESULTSBatch experiments indicated that NB was almost completely reduced by the immobilized iron sample (NZVI/CTMA-Bent), with aniline as the dominant reduction product. While only 60% of NB was reduced by the bare NZVI, and aniline accounted for only half of the NB reduced. Kinetic studies confirmed that the reaction of NB with NZVI was accelerated through CTMA-Bent adsorption. XPS investigations suggested that the improved recycling of the NZVI/CTMA-Bent composite is related to less ferric (hydr)oxides formed during the reaction. CONCLUSIONImmobilization of NZVI on the organobentonite CTMA-Bent proved to be an effective method for quick and complete conversion of NB to biodegradable aniline. This novel method to remove recalcitrant organic pollutants may promote the industrial application of NZVI technique in environmental remediation. (c) 2013 Society of Chemical Industry