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Rate and mechanism of divalent metal transport through supported liquid membrane containing di(2‐ethylhexyl) phosphoric acid as a mobile carrier
Author(s) -
Huang TingChia,
Juang RueyShin
Publication year - 1988
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280420103
Subject(s) - phosphoric acid , zinc , permeation , membrane , chemistry , diffusion , facilitated diffusion , cobalt , divalent , inorganic chemistry , aqueous solution , copper , nickel , organic chemistry , thermodynamics , biochemistry , physics
Abstract The rate and mechanism of copper, cobalt, nickel and zinc transport through a supported liquid membrane containing di(2‐ethylhexyl) phosphoric acid as a mobile carrier were studied, respectively. The permeation rate equations have been derived taking into account aqueous film diffusion, interfacial chemical reaction and membrane diffusion as simultaneous controlling steps. The possible rate‐controlling steps were estimated by comparing the relative values of the three successive resistances. The measured permeation rates of zinc agreed well with the proposed mechanism in this study.