| 研究課題/領域番号 |
22K12428
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| 研究種目 |
基盤研究(C)
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| 配分区分 | 基金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分64020:環境負荷低減技術および保全修復技術関連
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| 研究機関 | 大阪大学 |
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研究代表者 |
Luong Van・Duc 大阪大学, 大学院工学研究科, 特任研究員(常勤) (60815174)
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| 研究分担者 |
井上 大介 大阪大学, 大学院工学研究科, 准教授 (70448091)
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| 研究期間 (年度) |
2022-04-01 – 2025-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
4,160千円 (直接経費: 3,200千円、間接経費: 960千円)
2024年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
2023年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
2022年度: 1,560千円 (直接経費: 1,200千円、間接経費: 360千円)
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| キーワード | anaerobic digestion / propionate oxidizers / ammonium / high ammonium / propionate / carbon recovery / methane recovery / propionate oxidizer / methane producer |
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| 研究開始時の研究の概要 |
Anaerobic digestion (AD) is a sustainable technology for CH4 recovery from wastewater as energy. Yet, the application of AD under high NH4+ remains a big challenge because high NH4+ inhibits the activity of propionate-oxidizing bacteria (POB), which results in low production of CH4. We will enrich and couple NH4-tolerant POB with methane-producing archaea for the enhanced CH4 recovery under high NH4+.
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| 研究実績の概要 |
A key factor for the enrichment of propionate-oxidizers has been explored. Also, the enriched culture showed a good performance in increasing the amount and rate of CH4 production when testing with different kinds of synthetic wastewater under high ammonium concentrations.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
Though the high effectiveness of the enriched culture has been shown to relieve the inhibition of ammonium in simulated wastewater, a large amount of biomass was used in this test. Therefore, an extended period is needed to obtain a desirable biomass for subsequent tests.
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| 今後の研究の推進方策 |
An optimal culture of propionate oxidizing microorganisms and their characteristics will be characterized for smooth production of CH4 under high ammonium and propionate concentrations.
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