scholarly journals Competitive Bulk Liquid Membrane Transport and Extraction of Cu(II), Ni(II), Zn(II) and Mn(II) Cations Using 5-Methyle-4[thiophen-2-yl-methylen-amino]-3-thio-oxo-1, 2, 4-triazol-5-one and Phthalic Dicarboxaldehyde

2008 ◽  
Vol 5 (1) ◽  
pp. 52-57 ◽  
Author(s):  
A. Nezhadali ◽  
M. Hakimi ◽  
M. Heydari
Keyword(s):  
Metal Ion ◽  
Liquid Membrane ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Metal Ion Extraction ◽  
Transport Efficiency ◽  
Ion Extraction ◽  
Oxygen Donor ◽  
Liquid Membrane Transport ◽  
Better Than

The competitive metal ion extraction and transport of Cu(II), Ni(II), Zn(II) and Mn(II) with a S-N donor,i.e. 5-methyle-4[thiophen-2-yl-methylen-amino]-3-thio-oxo-1,2,4-triazol-5-one(ATTT) and oxygen donor, phthalic dicarboxaldehyde(PHDC) compounds was examined and compared each other. Although the extraction and transport behavior of Cu(II) and Zn(II) with both ATTT and PHDC ligands is fundamentally similar, but the transport efficiency for Cu(II) is much better than Zn(II) ion. The transport and extraction results closely parallel for the cations using the present ligands. The experiments were buffered (acetic acid/sodiumacetate and formic acid/sodiumformate) at pH 3-7. The concentrations in the all transport and extraction experiments for the cations and ligands were 0.01 M and 1.0 x10-3M respectively

scholarly journals Selective Extraction and Bulk Liquid Membrane Transport of Cu(II) from Aqueous Nitrate Solution in the Presence of Zn(II), Ni(II) and Mn(II) Cations Using Benzoyl Acetone

2010 ◽  
Vol 7 (3) ◽  
pp. 1108-1115 ◽  
Author(s):  
A. Nezhadali ◽  
H. Vahedi ◽  
M. Roigar ◽  
A. Sadeghi
Keyword(s):  
Metal Ion ◽  
Liquid Membrane ◽  
Nitrate Solution ◽  
Selective Extraction ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Metal Ion Extraction ◽  
Ion Extraction ◽  
Aqueous Nitrate Solution ◽  
Liquid Membrane Transport

The competitive metal ion extraction and transport of Cu(II), Ni(II), Zn(II) and Mn(II) with benzoyl acetone and EDTA was studied. In the experiments the ligand was dissolved in chloroform and the pH and time of extraction or transport were varied. Also the rate of shaking and ligand concentration on the efficiency of extraction and transport was studied. The results revealed that the ligands exclusively extract Cu(II) from the mixture of the above cations.

scholarly journals Separation study of Mg+2 from seawater and RO brine through a facilitated bulk liquid membrane transport using 18-Crown-6

2016 ◽  
Vol 7 (4) ◽  
pp. 468-475 ◽  
Author(s):  
Mir Mahdi Zahedi ◽  
Somayeh Mohamad Ghasemi
Keyword(s):  
Membrane Transport ◽  
Liquid Membrane ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Transport Efficiency ◽  
Experimental Parameters ◽  
Phase Type ◽  
Transport Approach ◽  
Liquid Membrane Transport ◽  
Bulk Liquid Membrane Transport

A facilitated bulk liquid membrane transport approach is studied for Mg(II) extraction from seawater and reversed osmosis brine simulated media using 18-Crown-6 and dibenzo (DB)-18-Crown-6. The work is based on investigating the experimental parameters affecting the transport efficiency, such as pH of feed and receiving phase, type of membrane solvent, temperature, type and concentration of the carrier, and stripping solution conditions. The transported amount of magnesium ions from feed phase (Mg(II) = 0.059 M, NaCl = 0.01 M, pH = 3.3) across a chloroform membrane (18C6 = 0.001 M) into the receiving phase (SCN− 0.1 M pH 3) was found to be %97 (±0.7) after 2.5 hr. The selectivity of the method was evaluated by performing competitive transport experiments on the mixtures containing Ca2+, Na+, K+, and Mg2+ ions.

scholarly journals Liquid-liquid extraction and facilitated membrane transport of Pb2+ using a lipophilic acridono-crown ether as carrier

2020 ◽  
Vol 99 (1-2) ◽  
pp. 117-129
Author(s):  
Ádám Golcs ◽  
László Bezúr ◽  
Péter Huszthy ◽  
Tünde Tóth
Keyword(s):  
Membrane Transport ◽  
Metal Ion ◽  
Liquid Membrane ◽  
Competitive Inhibition ◽  
Liquid Extraction ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Liquid Liquid Extraction ◽  
Component Systems ◽  
Source Phase

AbstractStudies on liquid-liquid extraction and bulk liquid membrane (BLM) technique-based metal ion separation by a previously published Pb2+-selective acridono-18-crown-6 ether selector molecule were performed. The effects of the stirring speed, the quality of apolar organic membrane, the counterions of Pb2+, the pH of the aqueous phase, the concentration of the source phase, the concentration of the carrier in the BLM and the temperature on the Pb2+-separation were investigated. Moreover, the effects of the competitive inhibition due to the presence of Ag+, Ca2+, Co2+, Cu2+, K+, Mg2+, Na+ and Zn2+ as competing ions in a multicomponent aqueous source phase of different ion-concentrations were also studied. After a proper dilution of the multicomponent aqueous source phase, excellent Pb2+-selectivity was achieved without a significant reduction in the efficiency compared to the liquid membrane transport of single-component systems. Based on the BLM-cell studies the applied selector molecule proved to be suitable for the development of liquid membrane-based Pb2+-selective separation methods, which can be greatly aided by the analysis of the effects on the separation and by the optimization of the parameters of the process discussed here.

scholarly journals TRANSPORT BEHAVIOR OF Cr(III), Cd(II), Pb(II), AND Ag(I) IONS THROUGH BULK LIQUID MEMBRANE CONTAINING p-tert-BUTYLCALIX[4]ARENE–TETRADIETHYLACETAMIDE AS ION CARRIER

2010 ◽  
Vol 8 (3) ◽  
pp. 300-306 ◽  
Author(s):  
Maming Maming ◽  
Jumina Jumina ◽  
Dwi Siswanta ◽  
Hardjono Sastrohamidjojo ◽  
Keisuke Ohto
Keyword(s):  
Optimum Condition ◽  
Liquid Membrane ◽  
Bulk Liquid ◽  
High Concentration ◽  
Bulk Liquid Membrane ◽  
Transport Efficiency ◽  
Transport Behavior ◽  
Source Phase ◽  
Ion Carrier

The study on the transport behavior of Cr(III), Cd(II), Pb(II), and Ag(I) through bulk liquid membrane using p-tert-butylcalix[4]arene-tetradiethylacetamide as ions carrier has been conducted. The aims of this work are to determine the optimum condition, efficiency, and transport selectivity of the carriers for those ions. Both optimum condition and transport efficiency were obtained by determination of the concentration of transported ions with variation of the source phase pH, ion carrier concentration, the nature of decomplexant agent in the receiving phase, and transport time. The transport selectivity of the ion carrier was obtained from the ions competition transport experiments. The amount of Cr(III), Pb(II), Cd(II), and Ag(I) transported across liquid membrane were 11.6, 25.5, 39.5, and 42.1% respectively. The ion carrier is selective for Cd(II), Pb(II), Ag(I), and strongly depends on the nature of decomplexant agent as well as transport mechanism. The remarkable selectivity was shown by the ion carrier to Ag(I) when the transport process was carry out under high concentration of acid in the source phase.   Keywords: transport, p-tert-butylcalix[4]arene-tetradiethylacetamide, efficiency, selectivity, bulk liquid membrane, heavy metals

scholarly journals Transport of Aniline through Bulk Liquid Membrane with Transition Metal Ion As Receiving Phase

2019 ◽  
Vol 1 (2) ◽  
pp. 248
Author(s):  
Refinel . ◽  
Paska Apriani. S ◽  
Emil Salim ◽  
Hermansyah Aziz
Keyword(s):  
Transition Metal ◽  
Metal Ion ◽  
Liquid Membrane ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Transition Metal Ion

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