Characterization of pressure drop at micro and nano space by electrokinetic phenomena
| Project/Area Number |
25420799
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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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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Yokohama National University |
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Principal Investigator |
Nakamura Kazuho 横浜国立大学, 工学(系)研究科(研究院), 准教授 (30323934)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ケーク層 / 圧力損失 / 流動電位 / 粒子間間隙 / 表面電荷密度 / Filtration / Streaming potential / Cake layer / Particles / 界面動電現象 / 圧搾 / 粘度 |
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| Outline of Final Research Achievements |
The pressure drop arisen when liquid permeate thorough very narrow space was studied from view point of electrokinetic phenomena. The streaming potential method was employed as electrokinetic phenomena. A novel characterization method of surface charge density and size of the narrow space, i.e. the gap between particles in cake layer, were developed with the streaming potential method. As a pressure drop field the cake layer made by particles of PMMA sphere, JIS powder (Kanto loam, Calcium bicarbonate), slightly soluble salt crystal(PbSO4, Zn(OH)2) were used. The gap between particles determined by the developed method showed reasonable value with the conventional methods, which showed the usefulness of this method. The surface charge density of the cake layer depended on materials used and ranged from 0.05 to 0.02C/m2. These results showed the basic fundamental for developing the real time monitoring of the gap during filtration processes.
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Report
(4 results)
Research Products
(4 results)
