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Open AccessArticle

Nickel (II) Preconcentration and Speciation Analysis During Transport from Aqueous Solutions Using a Hollow-fiber Permeation Liquid Membrane (HFPLM) Device

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Química Industrial, Universidad Tecnológica del Sureste de Veracruz, Av. Universidad Tecnológica Lote Grande #1, Nanchital 93770, Veracruz, Mexico
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Departamento de Química Analítica, Facultad de Química, UNAM, Ciudad Universitaria, México 04510, D.F., Mexico
3
Center for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, Lund, SE-221 00, Sweden
*
Author to whom correspondence should be addressed.
Membranes 2011, 1(3), 217-231; https://doi.org/10.3390/membranes1030217
Received: 23 May 2011 / Revised: 27 July 2011 / Accepted: 12 August 2011 / Published: 18 August 2011
(This article belongs to the Special Issue Liquid Membranes)
Nickel (II) preconcentration and speciation analysis using a hollow fiber supported liquid membrane (HFSLM) device was studied. A counterflow of protons coupled to complexation with formate provided the driving force of the process, while Kelex 100 was employed as carrier. The influence of variables related to module configuration (acceptor pH and carrier concentration) and to the sample properties (donor pH) on the preconcentration factor, E, was simultaneously studied and optimized using a 3 factor Doehlert matrix response surface methodology. The effect of metal concentration was studied as well. Preconcentration factors as high as 4240 were observed depending on the values of the different variables. The effects of the presence of inorganic anions (NO2-, SO42-, Cl-, NO3-, CO32-, CN-) and dissolved organic matter (DOM) in the form of humic acids were additionally considered in order to carry out a speciation analysis study. Nickel preconcentration was observed to be independent of both effects, except when cyanide was present in the donor phase. A characterization of the transport regime was performed through the analysis of the dependence of E on the temperature. E increases with the increase in temperature according to the equation E(K) = -8617.3 + 30.5T with an activation energy of 56.7 kJ mol-1 suggesting a kinetic-controlled regime. Sample depletion ranged from 12 to 1.2% depending on the volume of the donor phase (100 to 1000 mL, respectively). View Full-Text
Keywords: nickel; preconcentration; speciation analysis; bioavailability; permeation liquid membrane; hollow fiber nickel; preconcentration; speciation analysis; bioavailability; permeation liquid membrane; hollow fiber
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Bautista-Flores, A.N.; De San Miguel, E.R.; Gyves, J.; Jönsson, J.Å. Nickel (II) Preconcentration and Speciation Analysis During Transport from Aqueous Solutions Using a Hollow-fiber Permeation Liquid Membrane (HFPLM) Device. Membranes 2011, 1, 217-231.

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