Reactive extraction of succinic acid from aqueous solutions using Tri-N-Octylamine (TOA) in 1-decanol: Equilibria and effect of temperature

Eda, S, Parthasarathy, R and Thella, P 2015, 'Reactive extraction of succinic acid from aqueous solutions using Tri-N-Octylamine (TOA) in 1-decanol: Equilibria and effect of temperature', in Asia Pacific Confederation of Chemical Engineering Congress 2015: APCChE 2015, incorporating CHEMECA 2015, Melbourne, Australia, 27 September - 1 October 2015, pp. 496-506.


Document type: Conference Paper
Collection: Conference Papers

Title Reactive extraction of succinic acid from aqueous solutions using Tri-N-Octylamine (TOA) in 1-decanol: Equilibria and effect of temperature
Author(s) Eda, S
Parthasarathy, R
Thella, P
Year 2015
Conference name Asia Pacific Confederation of Chemical Engineering Congress 2015: APCChE 2015, incorporating CHEMECA 2015
Conference location Melbourne, Australia
Conference dates 27 September - 1 October 2015
Proceedings title Asia Pacific Confederation of Chemical Engineering Congress 2015: APCChE 2015, incorporating CHEMECA 2015
Publisher Engineers Australia
Place of publication Melbourne, Australia
Start page 496
End page 506
Total pages 11
Abstract Succinic acid is a dicarboxylic acid. Its usage has been increased as a great green feedstock for the manufacture of synthetic resins, biodegradable polymers and chemical intermediates. Production process of succinic acid by fermentation method needs an economic separation method to compete with the synthetic process and is mainly depends on downstream process because downstream purification costs usually reach 60-70% of production cost. Several possible alternatives for the recovery of succinic acid from fermentation broth exist. Among these alternatives, reactive extraction is considered as the primary separation step for the recovery of succinic acid from the fermentation broth. In the present work, the effect of temperature on the extraction of succinic acid using tri-n-octylamine (TOA) in 1-Decanol was studied. The physical and chemical experiments have been carried out at different temperatures in the range of 298-333 K. Extraction efficiency (E %) decreased with increasing temperature. The distribution coefficient (KD) increased with increasing with TOA concentration from 10 to 30%. Reactive extraction was interpreted as a result of the formation of acidamine complex with a stoichiometry of 1:1. The equilibrium complexation constant KE1, determined using loading ratio (z), found to decrease from 15.64 to 3.54 with respect to temperature from 298k to 333 K. The enthalpy (Delta H) and entropy (Delta S) of the reaction were evaluated. The Delta H value for the reactive extraction of succinic acid was determined to be -7.91 kcal mol-1 and the corresponding Delta S value was -21.43 cal mol-1 K-1. The reaction for succinic acid-TOA complex was found to be exothermic in nature.
Subjects Chemical Engineering not elsewhere classified
Keyword(s) 1-decanol
reactive extraction
succinic acid
tri-n-octylamine
temperature.
ISBN 9781922107473
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