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In situ magnetic separation and immobilization of dibenzothiophene-desulfurizing bacteria
Li, Yu-Guang; Gao, Hong-Shuai; Li, Wang-Liang; Xing, Jian-Min; Liu, Hui-Zhou; Xing, JM
2009-11-01
Source PublicationBIORESOURCE TECHNOLOGY
ISSN0960-8524
Volume100Issue:21Pages:5092-5096
AbstractIn situ cell separation and immobilization of bacterial cells for biodesulfurization were developed by using superparamagnetic Fe(3)O(4) nanoparticles (NPs). The Fe(3)O(4) NPs were synthesized by coprecipitation followed by modification with ammonium oleate. The surface-modified NPs were monodispersed and the particle size was about 13 nm with 50.8 emu/g saturation magnetization. After adding the magnetic fluids to the Culture broth, Rhodococcus erythropolis LSSE8-1 cells were immobilized by adsorption and then separated with ail externally magnetic field. The maximum amount of cell mass adsorbed was about 530 g dry cell weight/g particles to LSSE8-1 cells. Analysis showed that the nanoparticles were strongly absorbed to the surface and coated the cells. Compared to free cells, the coated cells not only had the same desulfurizing activity but could also be easily separated from fermentation broth by magnetic force. Based on the adsorption isotherms and Zeta potential analysis, it was believed that oleate-modified Fe(3)O(4) NPs adsorbed bacterial cells mainly because of the nano-size effect and hydrophobic interaction. (C) 2009 Published by Elsevier Ltd.
KeywordBiodesulfurization Fe(3)o(4) Nanoparticles Superparamagnetic Adsorption Dibenzothiophene
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.biortech.2009.05.064
Indexed BySCI
Language英语
WOS KeywordRHODOCOCCUS-ERYTHROPOLIS ; FOSSIL-FUELS ; DIESEL FUELS ; BIODESULFURIZATION ; CELLS ; NANOPARTICLES ; PETROLEUM ; SOLVENTS ; SYSTEMS ; SULFUR
WOS Research AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS IDWOS:000268742800024
Citation statistics
Cited Times:88[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6553
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorXing, JM
AffiliationChinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Yu-Guang,Gao, Hong-Shuai,Li, Wang-Liang,et al. In situ magnetic separation and immobilization of dibenzothiophene-desulfurizing bacteria[J]. BIORESOURCE TECHNOLOGY,2009,100(21):5092-5096.
APA Li, Yu-Guang,Gao, Hong-Shuai,Li, Wang-Liang,Xing, Jian-Min,Liu, Hui-Zhou,&Xing, JM.(2009).In situ magnetic separation and immobilization of dibenzothiophene-desulfurizing bacteria.BIORESOURCE TECHNOLOGY,100(21),5092-5096.
MLA Li, Yu-Guang,et al."In situ magnetic separation and immobilization of dibenzothiophene-desulfurizing bacteria".BIORESOURCE TECHNOLOGY 100.21(2009):5092-5096.
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