Selective recovery of uranium from THOREX feed by hollow fibre supported liquid membrane technique containing di(2-ethylhexyl) isobutyramide (D2EHIBA) as the carrier

2010 ◽  
Vol 98 (5) ◽  
Author(s):  
P. N. Pathak ◽  
S. A. Ansari ◽  
D. R. Prabhu ◽  
A. S. Kanekar ◽  
P. K. Mohapatra ◽  
...  
Keyword(s):  
Liquid Membrane ◽  
Feed Solution ◽  
Hollow Fibre ◽  
Supported Liquid Membrane ◽  
Selective Recovery ◽  
Membrane Technique

AbstractHollow fibre supported liquid membrane (HFSLM) studies were carried out for the selective recovery of uranium from THOREX feed solution (0.2 g/L U+200 g/L Th+0.03 M HF+0.1 M Al(NO

Modelling and experimental validation of enantioseparation of racemic phenylalanine via a hollow fibre-supported liquid membrane

2014 ◽  
Vol 68 (2) ◽  
Author(s):  
Tatchanok Prapasawat ◽  
Anchaleeporn Lothongkum ◽  
Ura Pancharoen
Keyword(s):  
Mathematical Model ◽  
Liquid Membrane ◽  
Equilibrium Constants ◽  
Enantiomeric Excess ◽  
Feed Solution ◽  
Hollow Fibre ◽  
Supported Liquid Membrane ◽  
Transfer Coefficients ◽  
Average Deviation ◽  
Feed Phase

AbstractThis paper reports on the enantioseparation of racemic phenylalanine or D-phenylalanine and Lphenylalanine via a hollow fibre-supported liquid membrane (HFSLM) and the results are compared with the mathematical model. The enantioseparation results, of 80 % and 73 %, showed the highest extraction and stripping of l-phenylalanine from the feed phase and the enantiomeric excess (% ee) of 60 % from 6 mmol L−1 of initial rac-phenylalanine in the feed solution. The optimum parameters were feed solution at pH 5, 6 mmol LL−1 of O,O′-dibenzoyl-(2S,3S)-tartaric acid ((+)-DBTA) as the extractant in octanol as the liquid membrane, and deionised water as the stripping solution. Equal flow-rates of feed and stripping solutions of 100 mL minL−1 were adjusted in a batch operation mode for 50 min at ambient temperature. From the calculation, the equilibrium constants of extraction (K ex) and mass transfer coefficients in the feed phase (k f) and in the liquid membrane phase (k m) were found to be 1.81 L mmol−2, 3.50 × 10−2 cm s−1, and 1.40 × 10−2 cm s−1, respectively. Finally, the change in concentrations of d,l-phenylalanine over time in the feed and stripping solutions by mathematical model were estimated and compared with the experimental results. The values thus calculated were in agreement with the experimental data with the average deviation of approximately 3 %.

Effect of Recycling of Feed Solution on the Efficiency of Supported Liquid Membrane Module

1994 ◽  
Vol 29 (13) ◽  
pp. 1749-1755 ◽  
Author(s):  
Masaaki Teramoto ◽  
Noriaki Ohnishi ◽  
Hideto Matsuyama
Keyword(s):  
Liquid Membrane ◽  
Feed Solution ◽  
Membrane Module ◽  
Supported Liquid Membrane

Selective recovery and preconcentration of mercury with a benzoylthiourea-solid supported liquid membrane system

2005 ◽  
Vol 547 (2) ◽  
pp. 255-261 ◽  
Author(s):  
Clàudia Fontàs ◽  
Manuela Hidalgo ◽  
Victòria Salvadó ◽  
Enriqueta Anticó
Keyword(s):  
Liquid Membrane ◽  
Membrane System ◽  
Supported Liquid Membrane ◽  
Selective Recovery

A ‘cold’ actinide partitioning run at 20 L scale with hollow fibre supported liquid membrane using diglycolamide extractants

2011 ◽  
Vol 99 (12) ◽  
pp. 815-821 ◽  
Author(s):  
S. A. Ansari ◽  
R. B. Gujar ◽  
P. K. Mohapatra ◽  
Pankaj Kandwal ◽  
A. Sengupta ◽  
...  
Keyword(s):  
Liquid Membrane ◽  
Hollow Fibre ◽  
Supported Liquid Membrane ◽  
Actinide Partitioning

Hollow fibre-supported liquid membrane extraction and LC-MS/MS detection for the analysis of heterocyclic amines in urine samples

2009 ◽  
Vol 53 (12) ◽  
pp. 1496-1504 ◽  
Author(s):  
Rosa Busquets ◽  
Jan Åke Jönsson ◽  
Henrik Frandsen ◽  
Lluís Puignou ◽  
Maria Teresa Galceran ◽  
...  
Keyword(s):  
Liquid Membrane ◽  
Hollow Fibre ◽  
Membrane Extraction ◽  
Heterocyclic Amines ◽  
Urine Samples ◽  
Supported Liquid Membrane ◽  
Ms Detection ◽  
Liquid Membrane Extraction
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