Effect of Aeration on Stabilization of Organic Solid Waste and Microbial Population Dynamics in Lab-Scale Landfill Bioreactors(ENVIRONMENTAL BIOTECHNOLOGY)
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概要
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This study investigated microbial population dynamics and performance in lab-scale conventional, anaerobic, and aerobic landfill bioreactors specialized for high-organic wastes. Each reactor (2.35l) was loaded with 1.5kg of organic solid waste made of sludge cake, dry dog food, and wood chips. The conventional reactor was operated without leachate recirculation and aeration, but the other reactors used leachate recirculation at 200ml/d and without aeration (anaerobic bioreactor) or with aeration at 2l/min (aerobic bioreactor). The respective final waste volumes on day 138 of the conventional, anaerobic, and aerobic reactors were approximately 75%, 65%, and 60% of the initial volumes. Leachate recirculation in the anaerobic bioreactor accelerated biochemical reactions and promoted methane production. However, leachate from the anaerobic bioreactor showed TOC and NH_4^+-N concentrations that were as high as those of the conventional reactor. Aeration lowered leachate production and methane concentration and decreased organic matter in solid waste and leachate. Furthermore, the MPN value of amoA gene reached 10^5 MPN-copies/g-dry in the aerobic bioreactor, where nitrogen was removed from organic solid waste and leachate. During the first 72d, the aerobic bioreactor's MPN value of fungal 18S rDNA was the highest among reactors, but it decreased gradually. All reactors showed similar MPN values of eubacterial 16S rDNA, nirS, and nirK.
- 社団法人日本生物工学会の論文
- 2008-11-25
著者
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Ike Michihiko
Division of Sustainable Energy and Environmental Engineering, Osaka University
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SODA Satoshi
Division of Endocrinology and Metabolism, Niigata University Graduate School of Medical and Dental S
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Sang Nguyen
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Sang Nguyen
The Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osak
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Sei Kazunari
Division of Sustainable Energy and Environmental Engineering, Osaka University
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Ike M
Division Of Sustainable Energy And Environmental Engineering Osaka University
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Sei Kazunari
Dept. Mat. Env. Energy. Osaka Univ.
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Ike Michihiko
Division Of Sustainable Energy And Environmental Engineering Osaka University
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Ike Michihiko
大阪大学 環境･エネルギー工学専攻
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Ike Michihiko
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Soda S
National Institute For Environmental Studies
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Soda Satoshi
Division Of Endocrinology And Metabolism Niigata University Graduate School Of Medical And Dental Sc
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Ike Michihiko
Environ. Eng. Osaka Univ.
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Ike M
Osaka University
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Ike Michihiko
Department Of Environmental Engineering Faculty Of Engineering Osaka University
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Sei K
Dept. Mat. Env. Energy. Osaka Univ.
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Sei Kazunari
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Ike M
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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SODA SATOSHI
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University
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