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Optimization of lactic acid pertraction using liquid emulsion membranes by response surface methodology

Chanukya, B. S. and Manish, Kumar and Rastogi, N. K. (2013) Optimization of lactic acid pertraction using liquid emulsion membranes by response surface methodology. Separation and Purification Technology, 111. pp. 1-8.

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Abstract

The present work deals with the optimization of the conditions for the pertraction of lactic acid from aqueous solution using liquid emulsion membrane. A central composite rotatable design was employed to study the effect of stripping solution (Na2CO3) concentration (1.0–5.0% w/v), ratio of strip to membrane phase (Vs/Vm) (1.0–5.0), ratio of volume of feed to emulsion (Vf/Ve) (1.0–5.0) and contact time (2.0– 15.0 min) on the pertraction. The response surface models with high coefficients of determination values (R2 = 0.95) were fitted to the experimental data, which indicated that the polynomial response models fitted well for describing the % pertraction of lactic acid as well as % membrane phase recovery. Based on the design, the optimal conditions for obtaining higher pertraction were stripping phase (Na2CO3) concentration ranging from 1.58% to 3.46% w/v, ratio of strip to membrane phase and the ratio of volume of feed to emulsion 2.0, contact time ranging from 12.11 to 14.71 min. The graphical optimization of superimposed contour plots fulfilled the conditions to obtain % lactic acid recovery (Y1)P95% and % membrane phase recovery (Y2)P80%. The study demonstrated that response surface methodology can be utilized for deriving the optimum conditions for pertraction of lactic acid from aqueous solutions.

Item Type: Article
Uncontrolled Keywords: Liquid emulsion membranes Carrier Surfactant Tertiary amine Lactic acid Response surface methodology
Subjects: 600 Technology > 08 Food technology > 07 Food Engineering
Divisions: Food Engineering
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 08 Sep 2016 11:03
Last Modified: 08 Sep 2016 11:03
URI: http://ir.cftri.com/id/eprint/12291

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