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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제20권 제3호
- 발행연도
- 2010.1
- 수록면
- 615 - 621 (7page)
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초록· 키워드
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The viability of low-temperature sulfate reduction with hydrogen as electron donor was studied with a benchscale gas-lift bioreactor (GLB) operated at 9oC. Prior to the GLB experiment, the temperature range of sulfate reduction of the inoculum was assayed. The results of the temperature gradient assay indicated that the inoculum was a psychrotolerant mesophilic enrichment culture that had an optimal temperature for sulfate reduction of 31oC,and minimum and maximum temperatures of 7oC and 41oC, respectively. In the GLB experiment at 9oC, a sulfate reduction rate of 500-600 mg l-1 d-1, corresponding to a specific activity of 173 mg SO42- g VSS-1 d-1, was obtained.
The electron flow from the consumed H2-gas to sulfate reduction varied between 27% and 52%, whereas the electron flow to acetate production decreased steadily from 15% to 5%. No methane was produced. Acetate was produced from CO2 and H2 by homoacetogenic bacteria. Acetate supported the growth of some heterotrophic sulfate-reducing bacteria. The sulfate reduction rate in the GLB was limited by the slow biomass growth rate at 9oC and low biomass retention in the reactor. Nevertheless, this study demonstrated the potential sulfate reduction rate of psychrotolerant sulfate-reducing mesophiles at suboptimal temperature.
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참고문헌 (21)
참고문헌 신청
Auvinen, H / 2009 / Low temperature (9oC) AMD treatment in a sulfidogenic bioreactor dominated by a mesophilic Desulfomicrobium species / Biotechnol. Bioeng 104 : 740 ~ 751
Bijmans, Martijn F. M / 2008 / Effect of Sulfide Removal on Sulfate Reduction at pH 5 in a Hydrogen Fed Gas-Lift Bioreactor / Journal of Microbiology and Biotechnology 18 (11
Buisman, C. J. N / 2007 / Trends in application of industrial sulfate reduction for sulfur and metal recycling / Proceedings of European Metallurgical Conference : 383 ~ 387
Esener, A. A / 1983 / Theory and applications of unstructured growth models: Kinetic and energetic aspects / Biotech. Bioeng 25 : 2803 ~ 2841
Esposito, G / 2003 / Effect of the sludge retention time on H2 utilization in a sulfate reducing gas-lift reactor / Process Biochem 39 : 491 ~ 498
Bijmans, Martijn F. M / 2008 / Effect of Sulfide Removal on Sulfate Reduction at pH 5 in a Hydrogen Fed Gas-Lift Bioreactor / Journal of Microbiology and Biotechnology 18 (11
Buisman, C. J. N / 2007 / Trends in application of industrial sulfate reduction for sulfur and metal recycling / Proceedings of European Metallurgical Conference : 383 ~ 387
Esener, A. A / 1983 / Theory and applications of unstructured growth models: Kinetic and energetic aspects / Biotech. Bioeng 25 : 2803 ~ 2841
Esposito, G / 2003 / Effect of the sludge retention time on H2 utilization in a sulfate reducing gas-lift reactor / Process Biochem 39 : 491 ~ 498
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