Extraction of Lactic Acid from Fermentation Broth Using Long Chain Alkanoates

Liquid–liquid equilibrium data of the ternary systems of water + lactic acid + hexyl acetate (heptyl acetate and octyl acetate) were determined at T = (298, 303, and 308) K and atmospheric pressure. Complete phase diagrams show that the ternary systems exhibit type-1 behavior of LLE. The reliability...

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Bibliographic Details
Published inJournal of chemical and engineering data Vol. 68; no. 10; pp. 2686 - 2697
Main Authors Alao, Adeyinka Idowu, Agarry, Samuel Enahoro, Afolabi, Tinuade Jolaade
Format Journal Article
LanguageEnglish
Published American Chemical Society 12.10.2023
Subjects
Liquid-Liquid Equilibria and Vapor-Liquid-Liquid Equilibria
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Summary:Liquid–liquid equilibrium data of the ternary systems of water + lactic acid + hexyl acetate (heptyl acetate and octyl acetate) were determined at T = (298, 303, and 308) K and atmospheric pressure. Complete phase diagrams show that the ternary systems exhibit type-1 behavior of LLE. The reliability of the LLE data was ascertained, using Hand and Othmer–Tobias correlations, at standard deviation < 0.05. The calculated separation factor, at values greater than 1, shows that the solvents have the ability to extract lactic at the three studied temperatures. The yield of the extraction ranged between 39.99 and 81.81%; octyl acetate had the highest yield. The highest extraction factor (21.8886) obtained with octyl acetate gave the corresponding optimum extraction temperature and solvent–broth ratio of 308 K and 3.18, respectively. The lactic acid–octyl acetate extract mass ratio was 0.4834. Hexyl acetate, heptyl acetate, and octyl acetate are good solvents for lactic acid extraction from fermentation broth.
ISSN:0021-9568
1520-5134
DOI:10.1021/acs.jced.3c00467