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Kinetic Study of Mercury(II) Transport through a Bulk Liquid Membrane Using Cyanex 301 as Carrier
Author(s) -
Madaeni S. S.,
Islami N.
Publication year - 2013
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201200377
Subject(s) - chemistry , membrane , kinetic energy , solvent , analytical chemistry (journal) , mass transfer , mercury (programming language) , phase (matter) , facilitated diffusion , liquid liquid , ion , organic solvent , liquid phase , chromatography , inorganic chemistry , chemical engineering , organic chemistry , thermodynamics , biochemistry , physics , quantum mechanics , computer science , engineering , programming language
A kinetic study of Hg(II) ions transport through a bulk liquid membrane (BLM) was investigated. The commercially available liquid bis(2,4,4‐trimethyl(pentyl) dithiophosphinic acid) (Cyanex 301) was employed as mobile carrier. The influences of the carrier concentration in the liquid membrane, HNO 3 concentration in the feed phase, type of organic solvent, composition of the receiving phase, and stirring speed on mass transfer were studied. Various solvents including CH 2 Cl 2 , CHCl 3 , C 2 H 4 Cl 2 and CCl 4 were used as organic membrane. Among the solvents, CHCl 3 provided the superior results. The kinetic parameters ( k 1 , k 2 , R m max , t max , J d max , and J a max ) were calculated for the interface reaction assuming two consecutive, irreversible first‐order reactions. The analysis of Hg(II) accumulation in liquid membrane and the rate‐controlling step under different experimental conditions were elucidated. The experiments demonstrated that Cyanex 301 is an appropriate carrier for Hg(II) transport through liquid membrane.