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Immobilization of Acidithiobacillus ferrooxidans by a PVA–boric acid method for ferrous sulphate oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
36751 45146 2004 5 PDF Available
Title
Immobilization of Acidithiobacillus ferrooxidans by a PVA–boric acid method for ferrous sulphate oxidation
Abstract

Acidithiobacillus ferrooxidans was immobilized in poly(vinyl alcohol) (PVA) by a PVA–boric acid method, and spherical beads of uniform size were produced. Biooxidation of ferrous iron by immobilized cells was investigated in repeated batch culture and continuous operation in a laboratory scale packed-bed bioreactor. During repeated batch culture, the cell-immobilized gels were stable and showed high constant iron-oxidizing activity. In continuous operation in a packed-bed bioreactor, biooxidation of ferrous iron fits a plug-flow reaction model well. A maximum Fe2+ oxidation rate of 1.89 g l−1 h−1 was achieved at the dilution rate of 0.38 h−1 or higher, while no obvious precipitate was detected in the bioreactor.

Keywords
Biooxidation; Ferrous iron; Immobilization; Packed-bed bioreactor; Poly(vinyl alcohol); Acidithiobacillus ferrooxidans
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Immobilization of Acidithiobacillus ferrooxidans by a PVA–boric acid method for ferrous sulphate oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 39, Issue 12, 29 October 2004, Pages 2129–2133
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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Any Questions? feel free to contact us