Biodiesel synthesis in a solvent-free system by recombinant Rhizopus oryzae comparative study between a stirred tank and a packed-bed batch reactor
Canet Morral, Albert (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Bonet Ragel, Kírian (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Benaiges, M. Dolors (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Valero Barranco, Francisco (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)

Data:	2017
Resum:	A simultaneous synthesis of biodiesel, as fatty acid methyl esters, and monoacylglycerols catalysed by the recombinant Rhizopus oryzae lipase immobilized by adsorption on Relizyme OD/403M is presented. The use of this 1(3)-positional specific lipase prevents the formation of glycerol as a by-product, thus avoiding its drawbacks. The synthesis was carried out in a solvent-free system and it has been studied in two different reactor systems: stirred tank and packed-bed reactor. Stirred tank reactor presented a high-initial reaction rate and achieved a 33. 6% yield, which corresponds to a value of 50. 4% of the maximum yield that can be achieved with a 1(3)-positional specific lipase. In packed-bed reactor there was a smaller initial reaction rate, but it was achieved a 49. 1% yield, which corresponds to a 73. 6% of the maximum yield. When a second batch is performed, the yield decreased only 4% when packed-bed reactor is employed whereas a drastic decrease is observed in a stirred tank operation. Therefore, packed-bed reactor showed a best performance and minor damage to the biocatalyst.
Ajuts:	Ministerio de Economía y Competitividad CTQ2013-42391-R Generalitat de Catalunya 2014/SGR-452
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Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Biodiesel ; Packed-bed reactor ; Rhizopus oryzae lipase ; Transesterification
Publicat a:	Biocatalysis and biotransformation, Vol. 35, Num. 1 (2017) , p. 35-40, ISSN 1024-2422

DOI: 10.1080/10242422.2016.1278211

18 p, 538.6 KB

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