Theoretical study on membrane extraction of Cu2+ with D2EHPA in laminar flow circular tube modules

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Title:	Theoretical study on membrane extraction of Cu2+ with D2EHPA in laminar flow circular tube modules
Authors:	Guo, Jia-Jan;Ho, Chii-Dong
Contributors:	淡江大學化學工程與材料工程學系
Keywords:	Mass-transfer efficiency;Membrane extraction;Orthogonal expansion;Extraction rate
Date:	2008-12-15
Issue Date:	2011-05-20 09:56:12 (UTC+8)
Publisher:	Amsterdam: Elsevier BV
Abstract:	The predicting equations for the mass-transfer rate and mass-transfer efficiency in a concentric circular membrane extractor module under concurrent- and countercurrent-flow with various barrier locations were derived theoretically by calculating the mass balance on each subchannel. The analytical solution was obtained by using the separation variable and eigen-function expansion in power series. The mass-transfer efficiency enhancement in this study is represented graphically with the volumetric flow rate and permeable-barrier location as parameters. The theoretical predictions show that the improvements in the extraction rate, extraction efficiency, and mass-transfer efficiency can be achieved by setting the barrier location moving away from the κ = 0.5. The influences of the barrier location, aqueous phase flow rate, and the concentrations of Cu2+ on the mass-transfer efficiency enhancement are also discussed.
Relation:	Desalination 233(1-3), pp.247-257
DOI:	10.1016/j.desal.2007.09.049
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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