Equilibrium and Kinetic Studies on Reactive Extraction of Pyruvic Acid with Trioctylamine in 1-Octanol

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dc.contributor.authorMarti, Mustafa E.
dc.contributor.authorGurkan, Turker
dc.contributor.authorDoraiswamy, L. K.
dc.date.accessioned2020-03-26T18:14:32Z
dc.date.available2020-03-26T18:14:32Z
dc.date.issued2011
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractInterest in pyruvic acid has been growing due to the increase in its potential areas of use and its importance in metabolic reactions. These reasons along with the limitations on recovery have prompted researchers to consider novel recovery techniques. Reactive extraction has been proposed as a promising approach to the recovery of carboxylic acids. In this study, equilibrium and kinetic data were obtained for reactive extraction of pyruvic acid using trioctylamine (TOA) or Alamine 336 in 1-octanol or oleyl alcohol. The results showed that, without pH adjustment in the aqueous phase, and without the use of an extractant, 1-octanol extracted more pyruvic acid than oleyl alcohol with a distribution coefficient (K(D)) of 0.30. This trend remained the same when tertiary amines were used as an extractant. The K(D) values did not significantly differ with TOA or Alamine 336. The recovery of pyruvic acid was observed to increase as a function of TOA concentration and the stoichiometry of the reaction was mainly 1:1. As tertiary amines react only with undissociated acids, an increase in the initial pH of the aqueous phase lowered the KD values. When the pH was 4.0, the effect of TOA concentration on pyruvic acid extraction disappeared and for all concentration levels a distribution coefficient of 0.10 was obtained. Kinetic measurements showed that the reaction between pyruvic acid and TOA in 1-octanol is first order with respect to the two reactants with a rate constant of 0.94 L mol(-1) s(-1). The enhancement factor was calculated as 25.en_US
dc.description.sponsorshipTurkish State Planning Organization [BAP-08-11-DPT-2002K120510-(OYP-FBE-BTEK-4)]; Middle East Technical UniversityMiddle East Technical Universityen_US
dc.description.sponsorshipThe support for this study by the Turkish State Planning Organization, under Grant No. BAP-08-11-DPT-2002K120510-(OYP-FBE-BTEK-4) is gratefully appreciated. The authors wish to acknowledge Dr. C. Oztin and Mrs. Orakci of Middle East Technical University for their guidance and support, and Dr. C. E. Glatz for use of his laboratory in the Department of Chemical and Biological Engineering at Iowa State University, Ames, IA.en_US
dc.identifier.doi10.1021/ie200625qen_US
dc.identifier.endpage13525en_US
dc.identifier.issn0888-5885en_US
dc.identifier.issue23en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage13518en_US
dc.identifier.urihttps://dx.doi.org/10.1021/ie200625q
dc.identifier.urihttps://hdl.handle.net/20.500.12395/26455
dc.identifier.volume50en_US
dc.identifier.wosWOS:000297445500069en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAMER CHEMICAL SOCen_US
dc.relation.ispartofINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCHen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleEquilibrium and Kinetic Studies on Reactive Extraction of Pyruvic Acid with Trioctylamine in 1-Octanolen_US
dc.typeArticleen_US

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