Synthesis of lactic acid by alkaline hydrothermal conversion of glycerol at high glycerol concentration

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dc.contributor.authorRamírez-López, Camilo A.
dc.contributor.authorOchoa-Gómez, José R.
dc.contributor.authorFernández-Santos, María
dc.contributor.authorGómez-Jiménez-Aberasturi, Olga
dc.contributor.authorAlonso-Vicario, Ainhoa
dc.contributor.authorTorrecilla-Soria, Jesús
dc.contributor.institutionBIOECONOMÍA Y CO2
dc.contributor.institutionSG
dc.date.accessioned2024-07-24T12:08:11Z
dc.date.available2024-07-24T12:08:11Z
dc.date.issued2010-07-21
dc.description.abstractThe synthesis of lactic acid by alkaline hydrothermal conversion of glycerol at high glycerol concentrations under autogenous pressure is described. Temperature (250-290 °C), NaOH/glycerol molar ratio (1.1-1.75), glycerol concentration (2.5-3.5 M), and reaction time (30-250 min) have been the variables studied with temperature and NaOH/glycerol molar ratio having the major influence. An 84.5% lactic acid (as sodium lactate) yield is obtained at 280 °C and 90 min with a 2.5 M glycerol concentration and a 1.1 NaOH/glycerol molar ratio. The same yield is obtained starting from crude glycerol from biodiesel production as raw material. Sodium acrylate, oxalate and formate, and sodium carbonate have been identified as the main byproducts with carbonate being the major one. Several conversion routes based on the experimental results are proposed. A process for lactic acid separation based on electrodialysis is outlined.en
dc.description.statusPeer reviewed
dc.format.extent9
dc.identifier.citationRamírez-López , C A , Ochoa-Gómez , J R , Fernández-Santos , M , Gómez-Jiménez-Aberasturi , O , Alonso-Vicario , A & Torrecilla-Soria , J 2010 , ' Synthesis of lactic acid by alkaline hydrothermal conversion of glycerol at high glycerol concentration ' , Industrial & Engineering Chemistry Research , vol. 49 , no. 14 , pp. 6270-6278 . https://doi.org/10.1021/ie1001586
dc.identifier.doi10.1021/ie1001586
dc.identifier.issn0888-5885
dc.identifier.urihttps://hdl.handle.net/11556/3842
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=79952465073&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofIndustrial & Engineering Chemistry Research
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsGeneral Chemistry
dc.subject.keywordsGeneral Chemical Engineering
dc.subject.keywordsIndustrial and Manufacturing Engineering
dc.subject.keywordsSDG 7 - Affordable and Clean Energy
dc.titleSynthesis of lactic acid by alkaline hydrothermal conversion of glycerol at high glycerol concentrationen
dc.typejournal article
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