Hollow-fiber membrane extraction of copper(II) from aqueous ethylenediaminetetraacetic acid solutions with Aliquat 336
The extraction of Cu(II) from an equimolar EDTA ethylenediaminetetraacetic acid (EDTA) solution across microporous hollow fibers to an organic phase containing Aliquat 336 (a quaternary amine) was studied. It was shown that the resistance of interfacial chemical reaction could be neglected. A mass-transfer model was proposed considering aqueous-layer diffusion, membrane diffusion, and organic-layer diffusion on the basis of knowledge of extraction chemistry and the transport properties of the relevant geometry. The calculated time profiles of Cu(II) concentrations were in reasonable agreement with the measured ones (average standard deviation, 12%). The mass-transfer mechanism of this membrane extraction process was finally identified and discussed.
- Research Organization:
- Yuan Ze Univ., Chung-Li (TW)
- OSTI ID:
- 20076082
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 39, Issue 5; Other Information: PBD: May 2000; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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