2012 Fiscal Year Final Research Report
Development of mictroextraction technique for recovery of rare metal by ultrasound
| Project/Area Number |
23656569
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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 |
Recycling engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
YASUDA Keiji 名古屋大学, 工学研究科, 准教授 (80293645)
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| Co-Investigator(Kenkyū-buntansha) |
KODA Shinobu 名古屋大学, 大学院・工学研究科, 教授 (10126857)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 有価物回収 / レアメタル |
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| Research Abstract |
In order to improve the solvent extraction process for the recovery of rare metal, the effect of ultrasound was investigated. (1) Considering the coalescence time of droplets, ultrasonic irradiation at 20 kHz was suitable for emulsification. (2) Chloroform droplets were easy to coalesce because those zeta potentials were close to 0. The coalescence time was short when the ultrasonic frequency was 4.8 MHz and ultrasound was indirectly irradiated to a tilted glass vessel. (3) The extractability of galliumbecame 100 % after total ultrasonic irradiation time of 5 minutes. The extraction time was shorter than that of conventional method.
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