Membranes 2011, 1(3), 217-231; doi:10.3390/membranes1030217
Article

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

Received: 23 May 2011; in revised form: 27 July 2011 / Accepted: 12 August 2011 / Published: 18 August 2011
(This article belongs to the Special Issue Liquid Membranes)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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).
Keywords: nickel; preconcentration; speciation analysis; bioavailability; permeation liquid membrane; hollow fiber
PDF Full-text Download PDF Full-Text [564 KB, uploaded 18 August 2011 10:07 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

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.

AMA Style

Bautista-Flores AN, De San Miguel ER, Gyves J, Jönsson JÅ. Nickel (II) Preconcentration and Speciation Analysis During Transport from Aqueous Solutions Using a Hollow-fiber Permeation Liquid Membrane (HFPLM) Device. Membranes. 2011; 1(3):217-231.

Chicago/Turabian Style

Bautista-Flores, Ana Nelly; De San Miguel, Eduardo Rodríguez; Gyves, Josefina de; Jönsson, Jan Åke. 2011. "Nickel (II) Preconcentration and Speciation Analysis During Transport from Aqueous Solutions Using a Hollow-fiber Permeation Liquid Membrane (HFPLM) Device." Membranes 1, no. 3: 217-231.

Membranes EISSN 2077-0375 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert