Separation and Manipulation of Rare-earth Oxide Particles by Dielectrophoresis

›› 2010, Vol. 18 ›› Issue (6): 1034-1037.

Separation and Manipulation of Rare-earth Oxide Particles by Dielectrophoresis

陈慧英¹, 刘艳², 张鹤腾², 于乐², 朱岳麟¹, 李荻¹

1. School of Material Science and Engineering, Beihang University, Beijing 100083, China;
2. College of Life and Environmental Science, Minzu University of China, Beijing 100081, China

收稿日期:2010-03-19 修回日期:2010-08-11 出版日期:2010-12-28 发布日期:2010-12-28
通讯作者: CHEN Huiying, E-mail: huiyingrchen@yahoo.com.cn
基金资助:
Supported by the 985 Foundation of Central University for Nationalities(CUN985-3-3);the National Natural Science Foundation of China(90305011)

Separation and Manipulation of Rare-earth Oxide Particles by Dielectrophoresis

CHEN Huiying¹, LIU Yan², ZHANG Heteng², YU Le², ZHU Yuelin¹, LI Di¹

1. School of Material Science and Engineering, Beihang University, Beijing 100083, China;
2. College of Life and Environmental Science, Minzu University of China, Beijing 100081, China

Received:2010-03-19 Revised:2010-08-11 Online:2010-12-28 Published:2010-12-28
Supported by:
Supported by the 985 Foundation of Central University for Nationalities(CUN985-3-3);the National Natural Science Foundation of China(90305011)

摘要/Abstract

摘要： A challenge in chemical engineering is the separation and purification of rare-earth elements and their compounds. We report the design and manufacture of a dielectrophoresis(DEP) microchip of microelectrode arrays. This microchip device is constructed in order to use DEP to capture micro-particles of rare-earth oxides in petroleum. Dielectrophoretic behavior of micro-particles of rare-earth oxides in oil media is explored. The dielectrophoretic effects of particles under different conditions are investigated. It is showed that the prepared microchip is suitable for use in the investigation of dielectrophoretic responses of the rare-earth oxides in oil media. The factors such as frequency,particle size and valence of rare-earth metal are discussed. When the frequency is fixed,the translation voltage decreases as particle size increases. Lower frequencies are more effective for manipulation of inorganic particles in oil media. Particles of the same rare-earth oxide with different size,as well as particles of different rare-earth oxides,are captured in different regions of the field by regulating DEP conditions. This may be a new method for separation and purification of particles of different rare-earth oxides,as well as classification of particles with different size.

关键词: dielectrophoresis, microchip, rare-earth oxide, separation

Abstract: A challenge in chemical engineering is the separation and purification of rare-earth elements and their compounds. We report the design and manufacture of a dielectrophoresis(DEP) microchip of microelectrode arrays. This microchip device is constructed in order to use DEP to capture micro-particles of rare-earth oxides in petroleum. Dielectrophoretic behavior of micro-particles of rare-earth oxides in oil media is explored. The dielectrophoretic effects of particles under different conditions are investigated. It is showed that the prepared microchip is suitable for use in the investigation of dielectrophoretic responses of the rare-earth oxides in oil media. The factors such as frequency,particle size and valence of rare-earth metal are discussed. When the frequency is fixed,the translation voltage decreases as particle size increases. Lower frequencies are more effective for manipulation of inorganic particles in oil media. Particles of the same rare-earth oxide with different size,as well as particles of different rare-earth oxides,are captured in different regions of the field by regulating DEP conditions. This may be a new method for separation and purification of particles of different rare-earth oxides,as well as classification of particles with different size.

Key words: dielectrophoresis, microchip, rare-earth oxide, separation

陈慧英, 刘艳, 张鹤腾, 于乐, 朱岳麟, 李荻. Separation and Manipulation of Rare-earth Oxide Particles by Dielectrophoresis[J]. , 2010, 18(6): 1034-1037.

CHEN Huiying, LIU Yan, ZHANG Heteng, YU Le, ZHU Yuelin, LI Di. Separation and Manipulation of Rare-earth Oxide Particles by Dielectrophoresis[J]. , 2010, 18(6): 1034-1037.

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Separation and Manipulation of Rare-earth Oxide Particles by Dielectrophoresis

Separation and Manipulation of Rare-earth Oxide Particles by Dielectrophoresis

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