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Pàgina inicial > Articles > Articles publicats > Biodiesel production from crude Jatropa oil catalyzed by non-conventional immobilized heterologous Rhizopus oryzae and Carica papaya lipases |
Data: | 2016 |
Resum: | The aim of this study was to evaluate the feasibility of biodiesel production by transesterification of Jatropha oil with methanol, catalyzed by non-commercial sn-1,3-regioselective lipases. Using these lipases, fatty acid methyl esters (FAME) and monoacylglycerols are produced, avoiding the formation of glycerol as byproduct. Heterologous Rhizopus oryzae lipase (rROL) immobilized on different synthetic resins and Carica papaya lipase (rCPL) immobilized on Lewatit VP OC 1600 were tested. Reactions were performed at 30°C, with seven stepwise methanol additions. For all biocatalysts, 51-65% FAME (theoretical maximum=67%, w/w) was obtained after 4h transesterification. Stability tests were performed in 8 or 10 successive 4h-batches, either with or without rehydration of the biocatalyst between each two consecutive batches. Activity loss was much faster when biocatalysts were rehydrated. For rROL, half-life times varied from 16 to 579h. rROL on Lewatit VPOC 1600 was more stable than for rCPL on the same support. |
Ajuts: | Ministerio de Economía y Competitividad CTQ2013-42391-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-452 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Biodiesel ; Carica papaya lipase ; Jatropha oil ; Rhizopus oryzae lipase ; Sn-1,3 regioselective lipase |
Publicat a: | Bioresource technology, Vol. 213 (Aug. 2016) , p. 88-95, ISSN 0960-8524 |
Post-print 33 p, 1.5 MB |