Collect. Czech. Chem. Commun. 1999, 64, 2061-2072

Extraction of D-Tartaric Acid with Alamine 336/LIX 54 Mixture

Ivo Mishonova,*, Jaroslav Procházkab and Aleš Heybergerb

a Institute of Chemical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 103, 1113 Sofia, Bulgaria
b Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, Rozvojová 135, 165 02 Prague 6, Czech Republic


Extraction equilibria in the system aqueous solution of D-tartaric acid-solution of tertiary amine in diluent at 25 °C have been studied. The amine was Alamine 336, a long-chain tertiary amine with C8-C10 alkyls in 2 : 1 ratio; the diluent was chelating extractant LIX 54, a solution of an alkyl β-diketone in kerosene. The experimental results were correlated using a mathematical model which takes into account chemical reactions involved in acid-amine complex formation and non-specific effects of the nonideality of the system.

Keywords: Extractions; Extraction equilibrium; Carboxylic acids; Tertiary amines; Mixed extractants.