Collect. Czech. Chem. Commun. 1998, 63, 305-320

Extraction of Tartaric Acid with Trialkylamine

Radmila Tomovskaa, Filimena Poposkaa, Eva Volaufováb, Aleš Heybergerb and Jaroslav Procházkab

a Department of Chemical and Control Engineering, Faculty of Technology and Metallurgy, Rudjer Boskovic 16, 91000 Skopje, Macedonia
b Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic,165 02 Prague 6, Czech Republic


Extraction equilibria in the system aqueous solution of D-tartaric acid/solution of trialkylamine in binary diluent at 25 °C have been investigated. The amine used was a mixture of trialkylamines with C7-C9 alkyls, the diluent was a mixture hydrocarbon (n-heptane, kerosene) and a modifier (octan-1-ol, isodecanol, methyl isobutyl ketone). The effect of solvent composition on equilibrium was investigated and the experimental results were correlated using a mathematical model that takes into account chemical reactions involved in acid/amine complex formation, and the nonspecific effects of the nonideality of the system.

Keywords: Extraction equilibrium; D-Tartaric acid; Carboxylic acids; Tertiary amines; Binary diluent.