Modelling of interfacial mass transfer in microfluidic solvent extraction: part II. Heterogeneous transport with chemical reaction
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- 作者：Davide Ciceri (1)
Lachlan R. Mason (1)
Dalton J. E. Harvie (1)
Jilska M. Perera (1)
Geoffrey W. Stevens (1) - 关键词：Finite volume simulation ; Hydrometallurgy ; Kinetics ; Liquid/liquid interface ; Microfluidics ; Solvent extraction
- 刊名：Microfluidics and Nanofluidics
- 出版年：2013
- 出版时间：2 - January 2013
- 年：2013
- 卷：14
- 期：1
- 页码：213-224
- 全文大小：521KB
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Lachlan R. Mason (1)
Dalton J. E. Harvie (1)
Jilska M. Perera (1)
Geoffrey W. Stevens (1)
1. Department of Chemical and Biomolecular Engineering, The University of Melbourne, Melbourne, VIC, 3010, Australia - ISSN：1613-4990
文摘
The use of a microfluidic device in determining the extraction kinetics of CoII ions by di-(2-ethylhexyl) phosphoric acid (DEHPA) was demonstrated. Experimental data obtained using a Y-Y-shaped microchannel were modelled using a finite volume method. The contributions of diffusion and reaction transport resistances to the overall rate of mass transfer were obtained. A diffusion-controlled transfer assumption could not account for the experimental data, confirming that transport occurs under a mixed reaction–diffusion resistance regime. The reaction rate constant was determined to be $(2.4 \pm 0.6) \times 10^{-10}$ ?m/s, in good agreement with corresponding Lewis cell measurements from the literature.