New zeta-potential measurement appratus capable to estimate dependancy of particle size and develop particle classification
| Project/Area Number |
24560922
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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 | Hiroshima University |
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Principal Investigator |
HIDETO Yoshida 広島大学, 工学(系)研究科(研究院), 教授 (30116694)
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| Co-Investigator(Kenkyū-buntansha) |
FUKUI Kunihiro 広島大学, 大学院工学研究科, 教授 (60284163)
YAMAMOTO Tetsuya 名古屋大学, 大学院工学研究科, 准教授 (10432684)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 湿式分級 / 電気泳動 / 沈降法 / 電場 / ゼ－タ電位 / 電気泳動法 / 沈降天秤法 / ゼータ電位 / 高精度な粒子分級 |
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| Outline of Final Research Achievements |
In order to know particle charge level in liquid state, zeta-potential measurement is usually used in practical process. Howeve, conventional apparatus is difficult to know the dependancy of zeta-potential change with particle diameter. This research presents new measurement method which is based on sedimentation balance method. The absolute valu of zeta-potential shows the maximum value after particle dispersion process, but the value decreases with time and finally shows a contant value. For submicrin silica particles, zeta-potential changes with particle diameter.
New particle classification appratus of continuous vertical type separator is also developed and high particle separation performance was obtained.
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Report
(4 results)
Research Products
(14 results)
