Recovery of carboxylic acids from aqueous solutions by liquid-liquid extraction with a triisooctylamine diluent system

被引:22
作者
Malmary, G [1 ]
Albet, J [1 ]
Putranto, AMH [1 ]
Molinier, J [1 ]
机构
[1] INRA, Ecole Natl Super Ingn Arts Chim & Technol, Lab Chim Agroind, UMR 1010, F-31077 Toulouse 4, France
关键词
liquid-liquid extraction; triisooctylamine; citric acid; lactic acid; malic acid; complexation model;
D O I
10.1590/S0104-66322001000400008
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Tertiary alkylamines in solution with organic diluents are attractive extractants; for the recovery of carboxylic acids from dilute aqueous phases. The aim of this study was to investigate the mechanism for extraction of organic acids from water by a long-chain aliphatic tertiary amine. In order to attain this objective, we studied the liquid-liquid equilibria between the triisooctylamine + 1-octanol + n-heptane system as solvent and an aqueous solution of an individual carboxylic acid such as citric, lactic and malic acids. The experiments showed that the partition coefficient for a particular organic acid depends on the kind of solute, notably when the acid concentration in the aqueous phase is low. A mathematical model, where both chemical association and physical distribution are taken into consideration, is proposed. The model suggests that the various complexes obtained between amine and organic acids contribute to the distribution of the solute between the coexisting phases in equilibrium.
引用
收藏
页码:441 / 447
页数:7
相关论文
共 11 条
[1]   AMINE EXTRACTION OF HYDROXYCARBOXYLIC ACIDS .1. EXTRACTION OF CITRIC-ACID WITH 1-OCTANOL N-HEPTANE SOLUTIONS OF TRIALKYLAMINE [J].
BIZEK, V ;
HORACEK, J ;
RERICHA, R ;
KOUSOVA, M .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (06) :1554-1562
[2]   PROCEDURE FOR THE SIMULTANEOUS DETERMINATION OF TARTARIC AND CITRIC ACIDS AND TOTAL CARBONATE BY POTENTIOMETRIC TITRIMETRY AND ITS APPLICATION TO ANTACID ANALYSIS [J].
DESOUZA, NE ;
GODINHO, OES ;
ALEIXO, LM .
ANALYST, 1985, 110 (08) :989-991
[3]  
Juang RS, 1997, CHEM ENG J, V65, P47
[4]   EXTRACTION CHEMISTRY OF FERMENTATION PRODUCT CARBOXYLIC-ACIDS [J].
KERTES, AS ;
KING, CJ .
BIOTECHNOLOGY AND BIOENGINEERING, 1986, 28 (02) :269-282
[5]  
KING CJ, 1993, 11 INT C CHEM ENG CH, P1062
[6]   Distribution of binary mixtures of citric, acetic and oxalic acid between water and organic solutions of tri-n-octylamine .1. Organic solvent toluene [J].
Kirsch, T ;
Maurer, G .
FLUID PHASE EQUILIBRIA, 1997, 131 (1-2) :213-231
[7]   Measurement of partition coefficients of carboxylic acids between water and triisooctylamine dissolved in various diluents [J].
Malmary, G ;
Albet, J ;
Putranto, A ;
Hanine, H ;
Molinier, J .
JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1998, 43 (05) :849-851
[8]   AMINE EXTRACTION OF HYDROXYCARBOXYLIC ACIDS .2. COMPARISON OF EQUILIBRIA FOR LACTIC, MALIC, AND CITRIC ACIDS [J].
PROCHAZKA, J ;
HEYBERGER, A ;
BIZEK, V ;
KOUSOVA, M ;
VOLAUFOVA, E .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1994, 33 (06) :1565-1573
[9]   EXTRACTION OF CARBOXYLIC-ACIDS WITH AMINE EXTRACTANTS .1. EQUILIBRIA AND LAW OF MASS-ACTION MODELING [J].
TAMADA, JA ;
KERTES, AS ;
KING, CJ .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1990, 29 (07) :1319-1326
[10]  
WEAST RC, 1984, HDB CHEM PHYSICS