Reduction of chromate by fixed films of sulfate-reducing bacteria using hydrogen as an electron source.
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| Title: | Reduction of chromate by fixed films of sulfate-reducing bacteria using hydrogen as an electron source. |
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| Authors: | Battaglia-Brunet, F., Foucher, S., Denamur, A., Ignatiadis, I., Michel, C., Morin, D. |
| Source: | Journal of Industrial Microbiology & Biotechnology. Mar2002, Vol. 28 Issue 3, p154. 6p. |
| Subjects: | Chromium, Hydrogen |
| Abstract: | The ability of sulfate-reducing bacteria (SRB) to reduce chromate, Cr(VI), was evaluated using fixed-film growth systems and H[sub 2] as the electron source. A main objective of the experiment was to distinguish between direct enzymatic reduction and indirect reduction by hydrogen sulfide, in order to subsequently verify and control the synergy of these two mechanisms. In batch experiments with the sulfate-reducing consortium CH10 selected from a mining site, 50 mg l[sup -1] Cr(VI) was reduced in 15 rain in the presence of 500 mgl[sup -1] hydrogen sulfide compared to 16 mg l[sup -1] reduced in I h without hydrogen sulfide. Fixed films of a CH10 population and Desulfomicrobium norvegicum were fed-batch grown in a column bioreactor. After development of the biofilm, hydrogen sulfide was removed and the column was fed continuously with a 13-mg l[sup -1] Cr(VI) solution. Specific Cr(VI) reduction rates on pozzolana were close to 90 mg Cr(VI) h[sup -1] per gram of protein. Exposure to Cr(VI) had a negative effect on the subsequent ability of CH10 to reduce sulfate, but the inhibited bacteria remained viable. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Industrial Microbiology & Biotechnology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 8622794 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Reduction of chromate by fixed films of sulfate-reducing bacteria using hydrogen as an electron source. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Battaglia-Brunet%2C+F%2E%22">Battaglia-Brunet, F.</searchLink><br /><searchLink fieldCode="AR" term="%22Foucher%2C+S%2E%22">Foucher, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Denamur%2C+A%2E%22">Denamur, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Ignatiadis%2C+I%2E%22">Ignatiadis, I.</searchLink><br /><searchLink fieldCode="AR" term="%22Michel%2C+C%2E%22">Michel, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Morin%2C+D%2E%22">Morin, D.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Industrial+Microbiology+%26+Biotechnology%22">Journal of Industrial Microbiology & Biotechnology</searchLink>. Mar2002, Vol. 28 Issue 3, p154. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Chromium%22">Chromium</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen%22">Hydrogen</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The ability of sulfate-reducing bacteria (SRB) to reduce chromate, Cr(VI), was evaluated using fixed-film growth systems and H[sub 2] as the electron source. A main objective of the experiment was to distinguish between direct enzymatic reduction and indirect reduction by hydrogen sulfide, in order to subsequently verify and control the synergy of these two mechanisms. In batch experiments with the sulfate-reducing consortium CH10 selected from a mining site, 50 mg l[sup -1] Cr(VI) was reduced in 15 rain in the presence of 500 mgl[sup -1] hydrogen sulfide compared to 16 mg l[sup -1] reduced in I h without hydrogen sulfide. Fixed films of a CH10 population and Desulfomicrobium norvegicum were fed-batch grown in a column bioreactor. After development of the biofilm, hydrogen sulfide was removed and the column was fed continuously with a 13-mg l[sup -1] Cr(VI) solution. Specific Cr(VI) reduction rates on pozzolana were close to 90 mg Cr(VI) h[sup -1] per gram of protein. Exposure to Cr(VI) had a negative effect on the subsequent ability of CH10 to reduce sulfate, but the inhibited bacteria remained viable. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Industrial Microbiology & Biotechnology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1038/sj.jim.7000226 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 154 Subjects: – SubjectFull: Chromium Type: general – SubjectFull: Hydrogen Type: general Titles: – TitleFull: Reduction of chromate by fixed films of sulfate-reducing bacteria using hydrogen as an electron source. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Battaglia-Brunet, F. – PersonEntity: Name: NameFull: Foucher, S. – PersonEntity: Name: NameFull: Denamur, A. – PersonEntity: Name: NameFull: Ignatiadis, I. – PersonEntity: Name: NameFull: Michel, C. – PersonEntity: Name: NameFull: Morin, D. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2002 Type: published Y: 2002 Identifiers: – Type: issn-print Value: 13675435 Numbering: – Type: volume Value: 28 – Type: issue Value: 3 Titles: – TitleFull: Journal of Industrial Microbiology & Biotechnology Type: main |
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