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Enhanced sulfate reduction by Citrobacter sp coated with Fe3O4/SiO2 magnetic nanoparticles
Zhou, Wei1; Yang, Maohua1; Song, Ziyu1; Xing, Jianmin1,2
2015-02-01
Source PublicationBIOTECHNOLOGY AND BIOPROCESS ENGINEERING
ISSN1226-8372
Volume20Issue:1Pages:117-123
Abstract

A sulfate-reducing Citrobacter strain was isolated and coated with Fe3O4/SiO2 magnetic nanoparticles (MNPs) to enhance sulfate reduction. Biolog analysis showed that it utilizes a broad range of electron donors. The findings also showed that this bacteria strain is a facultative anaerobe and can completely reduce 12 mM of sulfate to sulfide in 7 days under anaerobic conditions. Moreover, sulfate reduction was enhanced by 79% under optimized conditions. Different SiO2 wrap-ratios of the MNPs attached to the cell surface were studied to optimize the sulfate reduction: the surface of cells coated with 300% silica wrap-ratio MNPs showed the highest stability and increased desulfurization batch time, with a 450% increase in sulfate reduction in comparison with uncoated cells cultivated in anaerobic conditions.

KeywordAnaerobic Processes Biodesulfurization Cell Immobilization Citrobacter Sp Hcsr Magnetic Particles (Mnps) Waste-water Treatment
SubtypeArticle
Subject AreaBiotechnology & Applied Microbiology
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s12257-014-0504-8
Indexed BySCI
Language英语
WOS KeywordReducing Bacteria ; Waste-water ; Oil-field ; Sp Nov. ; Morphology ; Nitrate
Funding ProjectNational Natural Science Foundation of China [21207060, 21076216] ; National High Technology Research and Development Program of China (863 Project) [2011AA060904]
WOS Research AreaBiotechnology & Applied Microbiology
WOS SubjectBiotechnology & Applied Microbiology
WOS IDWOS:000351466100015
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13829
Collection研究所(批量导入)
Corresponding AuthorZhou, Wei
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Wei,Yang, Maohua,Song, Ziyu,et al. Enhanced sulfate reduction by Citrobacter sp coated with Fe3O4/SiO2 magnetic nanoparticles[J]. BIOTECHNOLOGY AND BIOPROCESS ENGINEERING,2015,20(1):117-123.
APA Zhou, Wei,Yang, Maohua,Song, Ziyu,&Xing, Jianmin.(2015).Enhanced sulfate reduction by Citrobacter sp coated with Fe3O4/SiO2 magnetic nanoparticles.BIOTECHNOLOGY AND BIOPROCESS ENGINEERING,20(1),117-123.
MLA Zhou, Wei,et al."Enhanced sulfate reduction by Citrobacter sp coated with Fe3O4/SiO2 magnetic nanoparticles".BIOTECHNOLOGY AND BIOPROCESS ENGINEERING 20.1(2015):117-123.
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