Modeling of the selective pertraction of carboxylic acids obtained by citric fermentation

• Main Authors: Cascaval Dan, Galaction Anca-Irina, Oniscu Corneliu
• Format: Article
• Language: English
• Published: Association of Chemical Engineers of Serbia 2004-01-01
• Series: Hemijska Industrija
• Subjects: facilitated pertraction; liquid membrane; citric acid; maleic acid; succinic acid; amberlite LA-2; mass flow; selectivity factor; statistical analysis
• Online Access: http://www.doiserbia.nb.rs/img/doi/0367-598X/2004/0367-598X0403097C.pdf

Facilitated pertraction was applied for the selective separation of citric, maleic and succinic acids from a mixture obtained by citric fermentation. The pertraction equipment included a U-shaped cell containing 1,2-dichloro-ethane as the liquid membrane and Amberlite LA-2 as the carrier. The experimental data indicated that maleic and succinic acids can be initially selectively separated from citric acid, followed by the selectively separation of maleic acid from succinic acid. Using statistical analysis and a second order factorial experiment, two mathematical correlations describing the influence of the main process variables on pertraction selectivity were established. For both extraction systems, the considered variables controlled the extraction process to an extent of 92.9-99.9%, the carrier concentration inside the liquid membrane exhibiting the most important influence.