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
Zhang, HK; Han, KM; Hu, XK1
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
2020-06-01
Volume389Pages:124464
Keywordextracellular electron-transfer mtr respiratory pathway cr(vi) reduction methyl-orange graphene degradation bacterium transcriptome mechanisms mediators
MOST Discipline CatalogueEngineering, Environmental ; Engineering, Chemical
DOI10.1016/j.cej.2020.124464
Department海岸带生物学与生物资源保护实验室
Abstract

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.

SubtypeArticle
Indexed BySCI
Language英语
WOS Keywordextracellular electron-transfer ; mtr respiratory pathway ; cr(vi) reduction ; methyl-orange ; graphene ; degradation ; bacterium ; transcriptome ; mechanisms ; mediators
WOS Research AreaEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000519528800062
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/25286
Collection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
Corresponding AuthorHu, XK
Affiliation1.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
Recommended Citation
GB/T 7714
Zhang, HK,Han, KM,Hu, XK. 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.
APA Zhang, HK,Han, KM,&Hu, XK.(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.
MLA Zhang, HK,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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, HK]'s Articles
[Han, KM]'s Articles
[Hu, XK]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, HK]'s Articles
[Han, KM]'s Articles
[Hu, XK]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, HK]'s Articles
[Han, KM]'s Articles
[Hu, XK]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.