The affecting factors for optimization of hemophilic aceticlastic methanogenesis
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- IKBAL
- Center for the Assessment and Application of Environmental Technology, Agency for the Assessment and Application of Technology
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- TANG YUEQIN
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
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- FUJIMURA YUTAKA
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
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- SHIGEMATSU TORU
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
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- MORIMURA SHIGERU
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
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- KIDA KENJI
- Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University
書誌事項
- タイトル別名
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- The Affecting Factors for Optimization of Mesophilic Aceticlastic Methanogenesis
- Affecting Factors for Optimization of Mesophilic Aceticlastic Methanogenesis
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Acontinuous-flow methane fermentation process was operated using acetate as the sole organic substrate. The phylogenetic analysis showed that 72% of the 16S rDNA clones were amliated with aceticlastic methanogens, Methanosaeta and Methanosarcina. The effects of pH, NH4+, acetic acid, propionic acid, S2-, Co2+, Ni2+, and NO3- concentrations on methanogenic activity were investigated in batch assays using the culture broth from the acetate reactor. The results showed that the patterns of specific gas evolution rate with and without pH control were different. Under the condition with pH control, the specific gas evolution rate decreased drastically when the pH was below 6.5 and over 7.5. The optimum pH was fbund to be 7 for mesophilic aceticlastic reaction. The specific gas evolution rate decreased sharply when the concentration of free NH3 exceeded 100-150mg/l; acetic acid and propionic acid did not interfere with the stability of anaerobic treatment when their concentrations were less than 3, 500mg/l and 4, 000mg/l, respectively. S2-had a toxic effect on methanogenic activity, such that the gas production rate was nearly zero at a Na2S concentration of 300mg/l; the additions of Ni2+ and Co2+ increased the gas production rate and they had almost no negative effects on methane fermentation even when their concentrations reached 10mg/l. The specific gas evolution rate also decreased sharply when the concentration of NO3- exceeded 500 mg/l which corresponded to about 110 mg-N/l.
収録刊行物
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- 日本水処理生物学会誌
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日本水処理生物学会誌 39 (4), 189-197, 2003
日本水処理生物学会
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詳細情報 詳細情報について
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- CRID
- 1390282679937835648
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- NII論文ID
- 130003455070
- 10011938436
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- NII書誌ID
- AN00351126
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- ISSN
- 18810438
- 09106758
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- NDL書誌ID
- 6788930
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可