| Project/Area Number |
22K12428
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 64020:Environmental load reduction and remediation-related
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| Research Institution | Osaka University |
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Principal Investigator |
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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| Co-Investigator(Kenkyū-buntansha) |
井上 大介 大阪大学, 大学院工学研究科, 准教授 (70448091)
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| Project Period (FY) |
2022-04-01 – 2025-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | anaerobic digestion / propionate oxidizers / ammonium / high ammonium / propionate / carbon recovery / methane recovery / propionate oxidizer / methane producer |
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| Outline of Research at the Start |
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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| Outline of Annual Research Achievements |
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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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
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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| Strategy for Future Research Activity |
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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