scholarly journals Chemical Kinetic Approach to the Mechanism of Coupled Transport of Cu(II) Ions through Bulk Liquid Membranes

2005 ◽  
Vol 109 (44) ◽  
pp. 10176-10176 ◽  
Author(s):  
Otto B. Nagy ◽  
Stefan Màtéfy-Tempfli
Keyword(s):  
Chemical Kinetic ◽  
Kinetic Approach ◽  
Bulk Liquid ◽  
Liquid Membranes ◽  
Coupled Transport

On the Mechanism of Coupled Transport of Cu(II) Ions Through Bulk Liquid Membranes

2005 ◽  
Vol 39 (3) ◽  
pp. 699-707 ◽  
Author(s):  
M. Szpakowska ◽  
O. B. Nagy ◽  
J. Szymanowski
Keyword(s):  
Bulk Liquid ◽  
Liquid Membranes ◽  
Coupled Transport

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

scholarly journals Molecules in nearby and primordial supernovae

2008 ◽  
Vol 4 (S251) ◽  
pp. 221-226
Author(s):  
Isabelle Cherchneff ◽  
Simon Lilly
Keyword(s):  
Gas Phase ◽  
Early Universe ◽  
Organic Molecules ◽  
Molecular Form ◽  
Chemical Kinetic ◽  
Kinetic Approach ◽  
Dust Formation ◽  
Core Collapse ◽  
Chemical Models ◽  
Upper Limits

AbstractWe present new chemical models of supernova (SN) ejecta based on a chemical kinetic approach. We focus on the formation of inorganic and organic molecules including gas phase dust precursors, and consider zero-metallicity progenitor, massive supernovae and nearby core-collapse supernovae such as SN1987A. We find that both types are forming large amounts of molecules in their ejecta at times as early as 200 days after explosion. Upper limits on the dust formation budget are derived. Our results on dust precursors do not agree with existing studies on dust condensation in SN ejecta. We conclude that PMSNe could be the first non-primodial molecule providers in the early universe, ejecting up to 34% of their progenitor mass under molecular form to the pristine, local gas.

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
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