Cultivation of Planktonic Anaerobic Ammonium Oxidation (Anammox) Bacteria Using Membrane Bioreactor
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概要
- 論文の詳細を見る
Enrichment cultures of anaerobic ammonium oxidation (anammox) bacteria as planktonic cell suspensions are essential for studying their ecophysiology and biochemistry, while their cultivation is still laborious. The present study aimed to cultivate two phylogenetically distinct anammox bacteria, "Candidatus Brocadia sinica" and "Ca. Scalindua sp." in the form of planktonic cells using membrane bioreactors (MBRs). The MBRs were continuously operated for more than 250 d with nitrogen loading rates of 0.48–1.02 and 0.004–0.09 kgN m-3 d-1 for "Ca. Brocadia sinica" and "Ca. Scalindua sp.", respectively. Planktonic anammox bacterial cells were successfully enriched (<symbol>></symbol>90%) in the MBRs, which was confirmed by fluorescence in-situ hybridization and 16S rRNA gene sequencing analysis. The decay rate and half-saturation constant for NO2- of "Ca. Brocadia sinica" were determined to be 0.0029–0.0081 d-1 and 0.47 mgN L-1, respectively, using enriched planktonic cells. The present study demonstrated that MBR enables the culture of planktonic anammox bacterial cells, which are suitable for studying their ecophysiology and biochemistry.
- 日本微生物生態学会の論文
著者
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Satoh Hisashi
Division Of Cardiovascular Surgery Department Of Surgery Osaka University Graduate School Of Medicin
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Awata Takanori
Department Of Civil And Environmental Engineering Graduate School Of Engineering Hiroshima Universit
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Kindaichi Tomonori
Department Of Civil And Environmental Engineering Graduate School Of Engineering Hiroshima Universit
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Okabe Satoshi
Division Of Environmental Engineering Faculty Of Engineering Hokkaido University
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Kindaichi Tomonori
Department of Civil and Environmental Engineering, Graduate School of Engineerging, Hiroshima University
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Oshiki Mamoru
Division of Environmental Engineering, Faculty of Engineering, Hokkaido University
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Awata Takanori
Department of Civil and Environmental Engineering, Graduate School of Engineerging, Hiroshima University
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