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

Carrier-Mediated Transport of Toxic Heavy Metal Ions in Bulk Liquid Membranes

2004 ◽  
Vol 2004 (6) ◽  
pp. 1330-1335 ◽  
Author(s):  
Lucia Brinchi ◽  
Raimondo Germani ◽  
Maria Vincenza Mancini ◽  
Gianfranco Savelli ◽  
Nicoletta Spreti
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Bulk Liquid ◽  
Liquid Membranes ◽  
Toxic Heavy Metal ◽  
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 Feasibility of Adsorption Kinetic Models to Study Carrier-Mediated Transport of Heavy Metal Ions in Emulsion Liquid Membranes

Membranes ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 66
Author(s):  
Gerardo León ◽  
Elisa Gómez ◽  
Beatriz Miguel ◽  
Asunción María Hidalgo ◽  
María Gómez ◽  
...  
Keyword(s):  
Adsorption Kinetic ◽  
Model Parameters ◽  
Liquid Membranes ◽  
Membrane Phase ◽  
Carrier Mediated Transport ◽  
Emulsion Liquid Membranes ◽  
Different Types ◽  
Adsorption Processes ◽  
Pseudo Second Order ◽  
Adsorption Kinetic Model

Emulsion liquid membranes have been successfully used for the removal of different types of organic and inorganic pollutants by means of carrier-mediated transport mechanisms. However, the models that describe the kinetics and transport of such mechanisms are very complex due to the high number of model parameters. Starting from an analysis of the similarity between the elemental mechanisms of carrier-mediated transport in liquid membranes and of transport in adsorption processes, this paper presents an experimental analysis of the possibility of applying kinetic and mechanistic models developed for adsorption to carrier-mediated transport in emulsion liquid membranes. We study the removal of a target species, in this case, Cu(II), by emulsion liquid membranes containing membrane phase solutions of benzoylacetone (carrier agent), Span 80 (emulsifying agent) and kerosene (diluent), and hydrochloric acid as a stripping agent in the product phase. The experimental results fit the pseudo-second-order adsorption kinetic model, showing good relationships between the experimental and model parameters. Although both Cu(II) diffusion through the feed/membrane interface boundary layer and complex Cu-benzoylacetone diffusion through the membrane phase controls Cu(II) transport, it is the former step that mainly controls the transport process.

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
Sign in / Sign up

Export Citation Format

Share Document