Extraction Equilibria of Glycolic Acid Using Tertiary Amines: Experimental Data and Theoretical Predictions

Extraction equilibrium of glycolic acid (1.5 mol·kg–1) from aqueous solutions has been carried out using a solvent/extractant consisting of 50 vol % trioctylamine (TOA) and 50 vol % tridodecylamine (TDA) in the concentration range of 0.194 mol·kg–1 to 1.163 mol·kg–1. The extract phase is diluted wit...

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Bibliographic Details
Published in:Journal of chemical and engineering data 2015-11, Vol.60 (11), p.3262-3267
Main Authors: Datta, Dipaloy, Aşçı, Yavuz Selim, Tuyun, Amaç Fatih
Format: Article
Language:English
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Summary:Extraction equilibrium of glycolic acid (1.5 mol·kg–1) from aqueous solutions has been carried out using a solvent/extractant consisting of 50 vol % trioctylamine (TOA) and 50 vol % tridodecylamine (TDA) in the concentration range of 0.194 mol·kg–1 to 1.163 mol·kg–1. The extract phase is diluted with dimethyl phthalate (DMP), methyl isobutyl ketone (MIBK), 2-octanone, 1-decanol, and cyclohexylacetate (CHA). The data are represented by calculating distribution coefficients (D), loading factors (Z), and extraction efficiencies (% E) using experimental values. The highest value of D for the glycolic acid extraction is found to be 4.44 for DMP, 4.09 for MIBK, 3.78 for 2-octanone, 3.51 for 1-decanol, and 2.71 for CHA. A substantial amount (73.05 % to 81.61 %) of glycolic acid is recovered by all the amine-diluent systems and at 1.163 mol·kg–1 initial concentration of (TOA + TDA) mixture.
ISSN:0021-9568
1520-5134
DOI:10.1021/acs.jced.5b00497