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Kinetic Study on the Transport of Chromium(III) by Emulsion Liquid Membrane

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Abstract:

The interfacial reactions and thermodynamic properties of the emulsion liquid membrane on separation and concentration of chromium (III) were discussed. Interfacial chemical reaction equations of membrane phase with P204 and mass transfer mechanism of ELM system were determined. The extraction reaction enthalpy is 11.41 kJmol1, while stripping reaction enthalpy is-143.65 kJmol1, were obtained by investigating reaction temperature on the distribution ratio under two different conditions. So extraction is an endothermic process and stripping is an exothermic process. And the main driving force of the separation system is the concentration gradient of hydrogen ion between external and internal phase interface.

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Periodical:

Advanced Materials Research (Volumes 781-784)

Pages:

2750-2757

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.781-784.2750

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Online since:

September 2013

Authors:

Yao Zhong Xie, De Jun Fei, Ya Gu Dang

Keywords:

Chromium (III), Emulsion Liquid Membrane, Extraction, Mechanism, Stripping

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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