scholarly journals EVALUATION OF KINETIC CONSTANTS AND TRANSPORT EFFICIENCIES AT MEMBRANE INTERFACES TO OPTIMIZE Co(II) RECOVERY BY BULK LIQUID MEMBRANES

2018 ◽  
Vol 48 (1) ◽  
pp. 51-55
Author(s):  
G. LEÓN ◽  
M. GÓMEZ ◽  
M. A. GUZMÁN ◽  
B. MIGUEL
Keyword(s):  
Transport Mechanism ◽  
Kinetic Constants ◽  
Bulk Liquid ◽  
Liquid Membranes ◽  
Environment And Public Health ◽  
Phase Volume ◽  
Product Phase ◽  
Operational Parameters ◽  
Counter Ions ◽  
Membrane Interfaces

The harms of heavy metals to the environment and public health joined to their character of valuable resource, have lead to an increasing interest in the search of efficient processes for their removal/recovery. In this paper we study the optimization of cobalt(II) recovery by bulk liquid membranes through a carrier facilitated counter transport mechanism, using DP8R as carrier and H2SO4 as stripping agent (protons as counter-ions), by analyzing the influence of different operational parameters (carrier concentration in the membrane, stripping agent concentration in the product phase, stirring rate and organic phase volume) on both the extraction/stripping kinetic constants and the Co(II) transport efficiencies through the feed/membrane and the membrane/product interfaces.

Carrier‐Mediated Transport of Amino Acids Through Bulk Liquid Membranes

2004 ◽  
Vol 39 (16) ◽  
pp. 3821-3838 ◽  
Author(s):  
R. Bucci ◽  
S. Canepari ◽  
E. Cardarelli ◽  
A. M. Girelli ◽  
A. Pietrodangelo ◽  
...  
Keyword(s):  
Amino Acids ◽  
Bulk Liquid ◽  
Liquid Membranes ◽  
Carrier Mediated Transport

scholarly journals Transport and Separation of the Silver Ion with n–decanol Liquid Membranes Based on 10–undecylenic Acid, 10–undecen–1–ol and Magnetic Nanoparticles

Membranes ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 936
Author(s):  
Gheorghe Nechifor ◽  
Florentina Mihaela Păncescu ◽  
Paul Constantin Albu ◽  
Alexandra Raluca Grosu ◽  
Ovidiu Oprea ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Membrane Separation ◽  
Silver Ions ◽  
Silver Ion ◽  
Bulk Liquid ◽  
Liquid Membranes ◽  
Gravimetric Analysis ◽  
Undecylenic Acid ◽  
Scanning Calorimetry ◽  
Source Phase

This paper presents a transport and recovery of silver ions through bulk liquid membranes based on n–decanol using as carriers 10–undecylenic acid and 10–undecylenyl alcohol. The transport of silver ions across membranes has been studied in the presence of two types of magnetic oxide nanoparticles obtained by the electrochemical method with iron electrodes in the electrolyte with and without silver ions, which act as promoters of turbulence in the membrane. Separation of silver ions by bulk liquid membranes using 10–undecylenic acid and 10–undecylenyl alcohol as carriers were performed by comparison with lead ions. The configuration of the separation module has been specially designed for the chosen separation process. Convective-generating magnetic nanoparticles were characterized in terms of the morphological and structural points of view: scanning electron microscopy (SEM), high-resolution SEM (HR–SEM), energy dispersive spectroscopy analysis (EDAX), Fourier Transform InfraRed (FTIR) spectroscopy, thermal gravimetric analysis (TGA), differential scanning calorimetry and magnetization. The process performance (flux and selectivity) was tested were tested for silver ion transport and separation through n–decanol liquid membranes with selected carriers. Under the conditions of the optimized experimental results (pH = 7 of the source phase, pH = 1 of the receiving phase, flow rate of 30 mL/min for the source phase and 9 mL/min for the receiving phase, 150 rot/min agitation of magnetic nanoparticles) separation efficiencies of silver ions of over 90% were obtained for the transport of undecenoic acid and about 80% for undecylenyl alcohol.

scholarly journals KINETIKA TRANSPOR Co(II) MELALUI TEKNIK MEMBRAN CAIR FASA RUAH SECARA KONSEKUTIF

2015 ◽  
Vol 3 (1) ◽  
pp. 67
Author(s):  
Riana Dewi ◽  
Admin Alif ◽  
Hermansyah Aziz
Keyword(s):  
Optimum Condition ◽  
Ion Transport ◽  
Intermediate Phase ◽  
Bulk Liquid ◽  
Liquid Membranes ◽  
Kinetic Evaluation ◽  
Irreversible Reaction ◽  
First Order ◽  
Source Phase

 ABSTRACT Determination of kinetic analysis of Co(II) ion transport through bulk liquid membranes by consecutive method have been study. The optimum condition was obtained at pH 4 for the intermediate phase and receiving phase at pH near zero, while the source phase at pH 7, oxine concentration in chloroform at source phase is 2.10 M, methyl red concentration in chloroform at receiving phase is 3.10 M. It was found that Co(II) ion receiving phase at optimum condition as 4.40%. Evaluation of Co(II) ion kinetic transport shows k1 as 0.0116 minutes-1 and k4 0.0113 minutes-1. Kinetic transport process of Co(I1) ion through bulk liquid membranes by consecutive method followed first order consecutive irreversible reaction rate low. Consecutive method can used as an alternative method in determination the optimum condition of metals ion transport and kinetic evaluation of mentioned transport metals ion. Keywords : bulk liquid membranes, consecutive, cobalt

ChemInform Abstract: ENANTIOMER DIFFERENTIATION IN TRANSPORT THROUGH BULK LIQUID MEMBRANES

1975 ◽  
Vol 6 (4) ◽  
pp. no-no
Author(s):  
MARTIN NEWCOMB ◽  
ROGER C. HELGESON ◽  
DONALD J. CRAM
Keyword(s):  
Bulk Liquid ◽  
Liquid Membranes

Optimization of Cu(II) removal/recovery by bulk liquid membranes containing benzoylacetone as mobile carrier

2017 ◽  
Vol 88 ◽  
pp. 139-144
Author(s):  
Gerardo León ◽  
Asunción María Hidalgo ◽  
María Gómez ◽  
Beatriz Miguel ◽  
Elisa Gómez
Keyword(s):  
Bulk Liquid ◽  
Liquid Membranes ◽  
Mobile Carrier
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