Zhang, Haikun1,2,3; Han, Kunming1; Hu, Xiaoke1,2,3
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
2020-06-01
卷号389页码:124464
关键词Binary nanocomposite2-Amino-3-hydroxy anthraquinoneReduced graphene oxide2,5-DichloronitrobenzeneBioreduction
DOI10.1016/j.cej.2020.124464
英文摘要The slow anaerobic reduction rate of 2,5-dichloronitrobenzene (DCNB) is a bottleneck during its biotreatment. In this study, the process and mechanism of enhanced DCNB bioreduction by a 2-amino-3-hydroxy-anthraquinone/reduced grapheme oxide (AHQ/RGO) binary nanocomposite in the presence of Shewanella oneidensis MR-1 (MR1) are reported. AHQ/RGO was prepared using a one-step covalent combination method under mild conditions, and the as-prepared binary nanocomposite was further characterized by SEM, TEM, AFM, EA, UV-Vis, XRD, XPS, FTIR and electrochemical analyses. The results of catalytic assays showed that enhanced DCNB bioreduction to 2,5-dichloroaniline could be achieved in the presence of 30 mg/L AHQ/RGO and the k (h(-1)) value of the AHQ/RGO-supplemented system is 7.7- and 4.2-fold greater than that of the control and GO-supplemented systems, respectively. Moreover, molecular studies showed that the genes encoding cytochromes and reductases (especially yceJ and azoR) play key roles during the reduction of DCNB by MR-1 cells and multiple electron transfer pathways are involved during AHQ/RGO-mediated DCNB bioreduction. In addition, a synergistic effect between AHQ/RGO and outer membrane proteins of MR-1 was confirmed by mutant assays and is likely responsible for the catalytic performance of AHQ/RGO. This work provides a potential application of strain MR-1 and AHQ/ RGO in enhancing the treatment of DCNB-containing wastewater.
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51608519]; Yantai Science and Technology Project [2017ZH094]; State Key Joint Laboratory of Environment Simulation and Pollution Control (Research center for Eco-Environmental Sciences, Chinese Academy of Sciences) [19K02ESPCR]; External Cooperation Program of Chinese Academy of SciencesChinese Academy of Sciences [133337KYSB20180015]; Key Research Project of Frontier Science of Chinese Academy of Sciences [QYZDB-SSWDQC041]
收录类别SCI
语种英语
关键词[WOS]EXTRACELLULAR ELECTRON-TRANSFER; MTR RESPIRATORY PATHWAY; CR(VI) REDUCTION; METHYL-ORANGE; GRAPHENE; DEGRADATION; BACTERIUM; TRANSCRIPTOME; MECHANISMS; MEDIATORS
研究领域[WOS]Engineering
WOS记录号WOS:000519528800062
引用统计被引频次：2[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/30472
专题海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
作者单位1.Chinese Acad Sci, Yantai Inst Costal Zone Res, Yantai 264000, Peoples R China;
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China;
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
推荐引用方式
GB/T 7714Zhang, Haikun,Han, Kunming,Hu, Xiaoke. Enhanced bioreduction of 2,5-dichlorobenzene by an AHQ/RGO binary nanocomposite through a synergistic effect with outer membrane proteins of Shewanella oneidensis MR-1[J]. CHEMICAL ENGINEERING JOURNAL,2020,389:124464.
APAZhang, Haikun,Han, Kunming,&Hu, Xiaoke.(2020).Enhanced bioreduction of 2,5-dichlorobenzene by an AHQ/RGO binary nanocomposite through a synergistic effect with outer membrane proteins of Shewanella oneidensis MR-1.CHEMICAL ENGINEERING JOURNAL,389,124464.
MLAZhang, Haikun,et al."Enhanced bioreduction of 2,5-dichlorobenzene by an AHQ/RGO binary nanocomposite through a synergistic effect with outer membrane proteins of Shewanella oneidensis MR-1".CHEMICAL ENGINEERING JOURNAL 389(2020):124464.
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