High-gravity intensified iron-carbon micro-electrolysis for degradation of dinitrotoluene

作     者：Jiaxin Jing Weizhou Jiao Zhixing Li Kechang Gao Jingwen Zhang Gaomiao Ren Youzhi Liu Jiaxin Jing;Weizhou Jiao;Zhixing Li;Kechang Gao;Jingwen Zhang;Gaomiao Ren;Youzhi Liu

作者机构：Shanxi Province Key Laboratory of Higee-Oriented Chemical EngineeringNorth University of ChinaTaiyuan 030051China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2022年第16卷第11期

页      面：1595-1605页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：This work was supported by the Fund for Shanxi"1331Project"(Grant No.nuc2021-006),Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province(Grant No.20200004) Shanxi Scholarship Council of China(Grant No.2019032) 

主　　题：high-gravity technology rotating packed bed Fe–C micro-electrolysis dinitrotoluene wastewater active sites 

摘      要：The application of iron–carbon(Fe–C)micro-electrolysis to wastewater treatment is limited by the passivation potential of the Fe–C *** order to address this problem,high-gravity intensified Fe–C micro-electrolysis was proposed in this study for degradation of dinitrotoluene wastewater in a rotating packed bed(RPB)using commercial Fe–C particles as the *** effects of reaction time,high-gravity factor,liquid flow rate and initial solution pH were *** degradation intermediates were determined by gas chromatography-mass spectrometry,and the possible degradation pathways of nitro compounds by Fe–C micro-electrolysis in RPB were also *** is found that under optimal conditions,the removal rate of nitro compounds reaches 68.4%at 100 *** removal rate is maintained at approximately 68%after 4 cycles in RPB,but it is decreased substantially from 57.9%to 36.8%in a stirred tank *** is because RPB can increase the specific surface area and the renewal of the liquid–solid interface,and as a result the degradation efficiency of Fe–C micro-electrolysis is improved and the active sites on the Fe–C surface can be regenerated for continuous *** conclusion,high-gravity intensified Fe–C micro-electrolysis can weaken the passivation of Fe–C particles and extend their service life.