| Project/Area Number |
16J08523
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Research Field |
Environmental engineering and reduction of environmental burden
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
謝 理 東京農工大学, 大学院工学研究院, 特別研究員(PD)
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| Project Period (FY) |
2016-04-22 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2017: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2016: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | High pressure jet device / Sludge reduction / Cavitation / Anaerobic digestion / Methane production / Pretreatment / Cell disruption / Atomic force microscopy |
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| Outline of Annual Research Achievements |
In the PhD stage, I conducted a study to elucidate the mechanism of bacterial cell disruption in activated sludge treatment by using a high pressure jet device (HPJD) (2016 - 2017). The HPJD consists of a high pressure pump and a tubular pipe with two independent entrances. The lateral port of HPJD is connected to a high-pressure pump to transport sludge via a nozzle at a high lateral velocity while the top port receives sludge by aspiration. The dual supply of sludge from horizontal and vertical directions generates frictional shear, fine bubbles (as a result of cavitation), and collision. These multiple effects disrupt bacterial cells and allow the release of intercellular compounds from damaged cells resulting in sludge reduction. My study revealed that cavitation was the dominate effect for cell disruption (Published in Chemical Engineering Journal (IF=6.216) in 2017). After I got PhD degree in 2017, I focused on the study about application of HPJD as a pretreatment in sludge anaerobic digestion to enhance sludge reduction and methane production. The applicability of HPJD on sludge anaerobic digestion was already confirmed by lab scale digestion tests using excess activated sludge and seed sludge were collected from Nakagawa and Morigasaki Water Reclamation Center
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| Research Progress Status |
29年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
29年度が最終年度であるため、記入しない。
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