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Biooxidation of ferrous iron by immobilized Acidithiobacillus ferrooxidans in poly(vinyl alcohol) cryogel carriers
Alternative TitleBiotechnol. Lett.
Long, ZE; Huang, YH; Cai, ZL; Cong, W; Fan, OY
2003-02-01
Source PublicationBIOTECHNOLOGY LETTERS
ISSN0141-5492
Volume25Issue:3Pages:245-249
AbstractPVA-cryogels entrapping about 10 9 cells of Acidithiobacillus ferrooxidans per ml of gel were prepared by freezing-thawing procedure, and the biooxidation of Fe2+ by immobilized cells was investigated in a 0.365 l packed-bed bioreactor. Fe2+ oxidation fits a plug-flow reaction model well. A maximum oxidation rate of 3.1 g Fe2+ l(-1) h(-1) was achieved at the dilution rate of 0.4 h(-1) or higher, while no obvious precipitate was determined at this time. In addition, cell-immobilized PVA-cryogels packed in bioreactor maintained their oxidative ability for more than two months under non-sterile conditions. Nomenclature: C-A0 - Concentration of Fe2+ in feed stream (g l(-1)) C-A - Concentration of Fe2+ in outlet stream (g l(-1)) D - Dilution rate of the packed-bed bioreactor (h(-1)) F - Volumetric flow rate of iron solution (l h(-1)) F-A0 - Mass flowrate of Fe2+ in the feed stream (g h(-1)) K - Kinetic constant (11(-1) h(-)1) r(A) - Oxidation rate of Fe2+ (g l(-1) h(-1)) V - Volume of packed-bed bioreactor (l) X-A - Conversion ratio of Fe2+ (%); PVA-cryogels entrapping about 10 9 cells of Acidithiobacillus ferrooxidans per ml of gel were prepared by freezing-thawing procedure, and the biooxidation of Fe2+ by immobilized cells was investigated in a 0.365 l packed-bed bioreactor. Fe2+ oxidation fits a plug-flow reaction model well. A maximum oxidation rate of 3.1 g Fe2+ l(-1) h(-1) was achieved at the dilution rate of 0.4 h(-1) or higher, while no obvious precipitate was determined at this time. In addition, cell-immobilized PVA-cryogels packed in bioreactor maintained their oxidative ability for more than two months under non-sterile conditions.
KeywordAcidithiobacillus Ferrooxidans Biooxidation Of Ferrous Iron Immobilization Packed-bed Bioreactor Poly(Vinyl Alcohol) Cryogel
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
URL查看原文
Indexed BySCI
Language英语
WOS KeywordPACKED-BED REACTORS ; THIOBACILLUS-FERROOXIDANS ; SULFATE OXIDATION ; KINETICS ; CELLS
WOS Research AreaBiotechnology & Applied Microbiology
WOS SubjectBiotechnology & Applied Microbiology
WOS IDWOS:000180831100011
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5270
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100080, Peoples R China
2.Jiangxi Normal Univ, Coll Life Sci, Nanchang 330027, Peoples R China
Recommended Citation
GB/T 7714
Long, ZE,Huang, YH,Cai, ZL,et al. Biooxidation of ferrous iron by immobilized Acidithiobacillus ferrooxidans in poly(vinyl alcohol) cryogel carriers[J]. BIOTECHNOLOGY LETTERS,2003,25(3):245-249.
APA Long, ZE,Huang, YH,Cai, ZL,Cong, W,&Fan, OY.(2003).Biooxidation of ferrous iron by immobilized Acidithiobacillus ferrooxidans in poly(vinyl alcohol) cryogel carriers.BIOTECHNOLOGY LETTERS,25(3),245-249.
MLA Long, ZE,et al."Biooxidation of ferrous iron by immobilized Acidithiobacillus ferrooxidans in poly(vinyl alcohol) cryogel carriers".BIOTECHNOLOGY LETTERS 25.3(2003):245-249.
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