Extraction of citric acid with tertiary amine—third-phase formation
1998
Abstract The conditions of third-phase formation in the system made up of aqueous solution of citric acid-solution of trialkylamine in a binary diluent were studied. As binary diluents mixtures of octanol-1 or chloroform with n -heptane were used. The experiments were carried out in water-free systems, at 25°C under the limiting condition of amine fully loaded with acid, thus simulating extraction form highly concentrated aqueous phase. The data could be presented as pseudo-ternary equilibria and were correlated using the extended method, devised by Rod ( Chem. Engng J. 1976, pp. 105–110).
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