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4699448 
Journal Article 
The selective pertraction of carboxylic acids obtained by citric fermentation process. The separation of succinic and malic acids 
Cascaval, D; Galaction, AI; Oniscu, C 
2003 
1 
Revista de Chimie
ISSN: 0034-7752
EISSN: 2668-8212 
54 
6 
525-529 
WOS:000184448100015 
Pertraction through liquid membranes is one of the most recent liquid-liquid extraction techniques that could be applied for biosynthetic compounds separation. In this paper, the facilitated pertraction has been used for succinic and malic acids separation, products of citric fermentation process.. The separation equipment consists of a U-shaped cell containing 1,2-dichloroethane as liquid membrane and Amberlite LA-2 as carrier The experimental data indicated the major influence of pH-gradient between the aqueous phases, of carrier concentration in organic phase and of mixing intensity on acids mass flows and permeability factors. 
pertraction; liquid membrane; succinic acid; malic acid; Amberlite LA-2; mass flow; permeability factor