2018 Fiscal Year Final Research Report
Challenges to ballast water purification with Lorentz forece type separators
| Project/Area Number |
15K14265
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2019-03-31
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| Keywords | バラスト水浄化 / ローレンツ力 / 海水・油分離装置 |
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| Outline of Final Research Achievements |
We have been studying seawater-oil separators using electromagnetic force. In this work, this device has been modified to remove aquatic organisms from ballast water. In the process of modification, we have focused on the relationship between the flow-path shape of the device and the seawater flow in the device. The seawater flow has be clarified from the comparison of the numerical simulation using the finite element method and the experiment using the actual separation device. Based on this result, we have improved the flow path shape. Finally, the separation experiments of fish eggs have been performed using the improved separation device. It has turned out that separation of eggs from seawater is sufficiently possible even in low magnetic fields(～2T). This strongly suggests that ballast water purification can be achieved by further improvement of the separation device.
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| Free Research Field |
低温物理学
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| Academic Significance and Societal Importance of the Research Achievements |
現在，バラスト水浄化法として採用されている手法では，休眠卵や胞子，シストなどの劣悪環境で生き残るものに対して十分な効果が得られない．新しい無害化技術の登場が待たれている．電磁力型分離装置は，これらの除去が可能である潜在性を持つことが本研究で示された．今後の研究により，より小さなものまで分離できるように装置を最適化できれば，新しいバラスト水浄化技術となり得る．
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