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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제25권 제10호
- 발행연도
- 2015.1
- 수록면
- 1,670 - 1,679 (10page)
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초록· 키워드
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Two hollow fiber membrane biofilm reactors (HF-MBfRs) were operated for autotrophic nitrification and hydrogenotrophic denitrification for over 300 days. Oxygen and hydrogen were supplied through the hollow fiber membrane for nitrification and denitrification, respectively. During the period, the nitrogen was removed with the efficiency of 82-97% for ammonium and 87-97% for nitrate and with the nitrogen removal load of 0.09-0.26 kg NH4+-N/m3/d and 0.10-0.21 kg NO3--N/m3/d, depending on hydraulic retention time variation by the two HF-MBfRs for autotrophic nitrification and hydrogenotrophic denitrification, respectively. Biofilms were collected from diverse topological positions in the reactors, each at different nitrogen loading rates, and the microbial communities were analyzed with partial 16S rRNA gene sequences in denaturing gradient gel electrophoresis (DGGE). Detected DGGE band sequences in the reactors were correlated with nitrification or denitrification. The profile of the DGGE bands depended on the NH4 + or NO3- loading rate, but it was hard to find a major strain affecting the nitrogen removal efficiency. Nitrospira-related phylum was detected in all biofilm samples from the nitrification reactors. Paracoccus sp. and Aquaspirillum sp., which are an autohydrogenotrophic bacterium and an oligotrophic denitrifier, respectively, were observed in the denitrification reactors. The distribution of microbial communities was relatively stable at different nitrogen loading rates, and DGGE analysis based on 16S rRNA (341f /534r) could successfully detect nitrate-oxidizing and hydrogen-oxidizing bacteria but not ammonium-oxidizing bacteria in the HF-MBfRs.
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참고문헌 (23)
참고문헌 신청
Alawi M / 2007 / Cultivation of a novel cold-adapted nitrite oxidizing betaproteobacterium from the Siberian Arctic / ISME J 1 : 256 ~ 264
Blackburne R / 2007 / Kinetic characterisation of an enriched Nitrospira culture with comparison to Nitrobacter / Water Res 41 : 3033 ~ 3042
Burrell PC / 2001 / Identification of bacteria responsible for ammonia oxidation in freshwater aquaria / Appl. Environ. Microbiol 67 : 5791 ~ 5800
Ergas SJ / 2001 / Hydrogenotrophic denitrification of d rinking water u insg a h ollow f ibre m embrane bioreactor / J. Water Supply Res. Technol 50 : 161 ~ 170
Francis CA / 2005 / Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean / Proc. Natl. Acad. Sci. USA 102 : 14683 ~ 14688
Blackburne R / 2007 / Kinetic characterisation of an enriched Nitrospira culture with comparison to Nitrobacter / Water Res 41 : 3033 ~ 3042
Burrell PC / 2001 / Identification of bacteria responsible for ammonia oxidation in freshwater aquaria / Appl. Environ. Microbiol 67 : 5791 ~ 5800
Ergas SJ / 2001 / Hydrogenotrophic denitrification of d rinking water u insg a h ollow f ibre m embrane bioreactor / J. Water Supply Res. Technol 50 : 161 ~ 170
Francis CA / 2005 / Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean / Proc. Natl. Acad. Sci. USA 102 : 14683 ~ 14688
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