scholarly journals Separation Fe(III)-Mn(II) via Supported Liquid Membrane Technology in the Treatment of Spent Alkaline Batteries

2021 ◽  
Author(s):  
Francisco J. Alguacil ◽  
Félix A. Lopez
Keyword(s):  
Liquid Membrane ◽  
Transport Model ◽  
Supported Liquid Membrane ◽  
Present System ◽  
Membrane Phase ◽  
Alkaline Batteries ◽  
Interfacial Chemical Reaction ◽  
Cyanex 923 ◽  
Aqueous Feed ◽  
And Diffusion

The transport of iron(III) from Fe(III)-Mn(II)-HCl mixed solutions through a flat-sheet supported liquid membrane is investigated, being the carrier phase of Cyanex 923 (commercially available phosphine oxide extractant) dissolved in Solvesso 100 (commercially available diluent), as a function of hydrodynamic conditions, concentration of manganese and HCl in the feed phase, and carrier concentration in the membrane phase. A transport model is derived that describes the transport mechanism, consisting of diffusion through a feed aqueous diffusion layer, a fast interfacial chemical reaction, and diffusion of the Fe(III)-Cyanex 923 complex across the membrane phase. The membrane diffusional resistance (Δm) and feed diffusional resistance (Δf) are calculated from the model, and their values are 145 s/cm and 361 s/cm, respectively. It is apparent that the transport of iron(III) is mainly controlled by diffusion through the aqueous feed boundary layer, being the thickness of this layer calculated as 2.9x10-3 cm. Since Mn(II) is not transported through the membrane phase, the present system allows to the purification of this manganese-bearing solutions.

scholarly journals Separation Iron(III)-Manganese(II) via Supported Liquid Membrane Technology in the Treatment of Spent Alkaline Batteries

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 991
Author(s):  
Francisco J. Alguacil ◽  
Félix A. Lopez
Keyword(s):  
Liquid Membrane ◽  
Transport Model ◽  
Supported Liquid Membrane ◽  
Present System ◽  
Membrane Phase ◽  
Alkaline Batteries ◽  
Interfacial Chemical Reaction ◽  
Cyanex 923 ◽  
Aqueous Feed ◽  
And Diffusion

In this paper, the transport of iron(III) from iron(III)-manganese(II)-hydrochloric acid mixed solutions, coming from the treatment of spent alkaline batteries through a flat-sheet supported liquid membrane, is investigated (the carrier phase being of Cyanex 923 (commercially available phosphine oxide extractant) dissolved in Solvesso 100 (commercially available diluent)). Iron(III) transport is studied as a function of hydrodynamic conditions, the concentration of manganese and HCl in the feed phase, and the carrier concentration in the membrane phase. A transport model is derived that describes the transport mechanism, consisting of diffusion through a feed aqueous diffusion layer, a fast interfacial chemical reaction, and diffusion of the iron(III) species-Cyanex 923 complex across the membrane phase. The membrane diffusional resistance (Δm) and feed diffusional resistance (Δf) are calculated from the model, and their values are 145 s/cm and 361 s/cm, respectively. It is apparent that the transport of iron(III) is mainly controlled by diffusion through the aqueous feed boundary layer, this being the thickness of this layer calculated as 2.9 × 10−3 cm. Since manganese(II) is not transported through the membrane phase, the present system allows the purification of these manganese-bearing solutions.

scholarly journals Dispersion-Free Extraction of In(III) from HCl Solutions Using a Supported Liquid Membrane Containing HA324H+Cl- Ionic Liquid as Carrier

2020 ◽  
Author(s):  
Francisco J. Alguacil ◽  
Félix A. López
Keyword(s):  
Ionic Liquid ◽  
Liquid Membrane ◽  
Metal Transport ◽  
Supported Liquid Membrane ◽  
Hydrodynamic Conditions ◽  
Membrane Phase ◽  
Flat Sheet ◽  
Interfacial Chemical Reaction ◽  
Source Phase ◽  
And Diffusion

The transport of indium(III), from HCl solutions, across a supported liquid membrane in flat-sheet configuration was investigated, being the carrier the ionic liquid HA324H+Cl- (derived from the tertiary amine Hostarex A324 and hydrochloric acid). Different variables affecting the metal transport: hydrodynamic conditions in the source and receiving phases, metal and HCl concentrations in the source phase, and carrier concentration in the membrane phase, were investigated. Also the transport of indium(III) using carriers of various nature: ionic liquids, alcohol, ketone, phosphine oxide and phosphoric ester, was compared. The metal transport was modelled describing the transport mechanism as: diffusion across the source diffusion layer, a fast interfacial chemical reaction, and diffusion of the InCl4--carrier complex through the membrane support. Diffusional parameters for the transport of indium(III), from the experimental data and the model, were estimated.

scholarly journals Pertraction of Co(II) through Novel Ultrasound Prepared Supported Liquid Membranes Containing D2EHPA. Optimization and Transport Parameters

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 436
Author(s):  
Gerardo León ◽  
Asunción María Hidalgo ◽  
Beatriz Miguel ◽  
María Amelia Guzmán
Keyword(s):  
Boundary Layer ◽  
Sulfuric Acid ◽  
Carrier Concentration ◽  
Liquid Membrane ◽  
Supported Liquid Membrane ◽  
Liquid Membranes ◽  
Membrane Phase ◽  
Experimental Conditions ◽  
Supported Liquid Membranes ◽  
Aqueous Feed

Pertraction of Co(II) through novel supported liquid membranes prepared by ultrasound, using bis-2-ethylhexyl phosphoric acid as carrier, sulfuric acid as stripping agent and a counter-transport mechanism, is studied in this paper. Supported liquid membrane characterization through scanning electron microscopy, energy-dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy shows the impregnation of the microporous polymer support by the membrane phase by the action of ultrasound. The effect on the initial flux of Co(II) of different experimental conditions is analyzed to optimize the transport process. At these optimal experimental conditions (feed phase pH 6, 0.5 M sulfuric acid in product phase, carrier concentration 0.65 M in membrane phase and stirring speed of 300 rpm in both phases) supported liquid membrane shows great stability. From the relation between the inverse of Co(II) initial permeability and the inverse of the square of carrier concentration in the membrane phase, in the optimized experimental conditions, the transport resistance due to diffusion through both the aqueous feed boundary layer (3.7576 × 104 s·m−1) and the membrane phase (1.1434 × 1010 s·m−1), the thickness of the aqueous feed boundary layer (4.0206 × 10−6 m) and the diffusion coefficient of the Co(II)-carrier in the bulk membrane (4.0490 × 10−14 m2·s−1), have been determined.

scholarly journals Dispersion-Free Extraction of In(III) from HCl Solutions Using a Liquid Membrane Containing HA324H+Cl- Ionic Liquid

2019 ◽  
Author(s):  
Francisco J. Alguacil ◽  
Félix A. López
Keyword(s):  
Ionic Liquid ◽  
Transport Mechanism ◽  
Liquid Membrane ◽  
Metal Transport ◽  
Hydrodynamic Conditions ◽  
Membrane Phase ◽  
Flat Sheet ◽  
Interfacial Chemical Reaction ◽  
Source Phase ◽  
And Diffusion

The transport of indium(III), from HCl solutions, across a supported liquid membrane in flat-sheet configuration was investigated, being the carrier the ionic liquid HA324H+Cl- (derived from the tertiary amine Hostarex A324 and hydrochloric acid). Different variables affecting the metal transport: hydrodynamic conditions in the source and receiving phases, metal and HCl concentrations in the source phase, and carrier concentration in the membrane phase, were investigated. Also the transport of indium(III) using carriers of various nature: ionic liquids, alcohol, ketone, phosphine oxide, etc., was compared. The metal transport was modelled describing the transport mechanism as: diffusion across the source diffusion layer, a fast interfacial chemical reaction, and diffusion of the InCl4--carrier complex through the membrane support. Diffusional parameters for the transport of indium(III), from the experimental data and the model, were estimated.

Extraction and permeation studies of Cd(II) in acidic and neutral chloride media using Cyanex 923 on supported liquid membrane

2009 ◽  
Vol 96 (1-2) ◽  
pp. 81-87 ◽  
Author(s):  
N.S. Rathore ◽  
A. Leopold ◽  
A.K. Pabby ◽  
A. Fortuny ◽  
M.T. Coll ◽  
...  
Keyword(s):  
Liquid Membrane ◽  
Supported Liquid Membrane ◽  
Permeation Studies ◽  
Cyanex 923

scholarly journals Non-Dispersive Extraction of Ge(IV) from Aqueous Solutions by Cyanex 923: Transport and Modeling Studies

2019 ◽  
Author(s):  
Hossein Kamran Haghighi ◽  
Mehdi Irannajad ◽  
Maria Teresa Coll ◽  
Ana Maria Sastre
Keyword(s):  
Oxalic Acid ◽  
Liquid Membrane ◽  
Membrane System ◽  
Solution Chemistry ◽  
Supported Liquid Membrane ◽  
P Value ◽  
Flat Sheet ◽  
Cyanex 923 ◽  
Model Curve ◽  
Oxalic Acid Concentration

The transport of germanium from an aqueous solution containing oxalic acid was studied using a flat sheet supported liquid membrane (FSSLM) system. Cyanex 923 immobilized in a polytetrafluoroethylene membrane was employed as a carrier. The solution chemistry and related diagrams were applied to study the transport of germanium. The effectual parameters such as oxalic acid, the carrier, and strip reagent concentrations were evaluated in this study. Based on the results, the oxalic acid concentration of 0.075 mol/L and the carrier concentration of 20 %v/v were the condition in which the efficient germanium transport occurred. Among strip reagents tested, NaOH had the best efficiency to transport germanium through the supported liquid membrane system. Furthermore, the permeation model was obtained to calculate the mass transfer resistances. According to the results, the values of 1 and 1345 s/cm were evaluated for Δm and Δf, respectively. The model curve showed that the P value reached a steady state at higher concentrations of the carrier because the viscosity governed the transport phenomenon.

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