Production of Environmentally Friendly Biodiesel by Enzymatic Oil Transesterification / Nežalingo Aplinkai Biodyzelino Gamybos Fermentinio Aliejaus Peresterinimo Būdu Optimizavimo Tyrimas / Получение Экологичного Биодизеля Путем Ферментативной Переэтерификации Масла

Abstract

Journal of Environmental Engineering and Landscape ManagementPublication details, including instructions for authors and subscription information:Abstract. In this study, the ability of commercial lipolytic enzyme Lipoprime 50T to catalyze the biotechnologically and environmentally important processes of rapeseed oil hydrolysis and transesterification were investigated and the optimal process conditions were determined using simple and accurate thin layer chromatographic, titrimetric and computer analysis (Micro image 4.0) methods. Lipoprime 50T lipase-catalyzed transesterification of rapeseed oil with several alcohols for fatty acid alkyl esters (biodiesel) production in n-hexane -a common solvent for lipolytic reactions -and in t-butanol -a novel promising solvent for biodiesel production -was investigated. The effects of molar ratio of substrates, reaction temperature and time on the constitution of the methanolysis reaction mixture were analyzed. Lipoprime 50T lipase-catalyzed rapeseed oil methanolysis in n-hexane was determined to be undesirably slow and inefficient process, whereas the lipolytic potential of the studied enzyme was determined to be very high in t-butanol (no rapeseed oil left after 1.5 h from the beginning of the reaction under determined optimal reaction conditions).

Betterment of ecological parameters of a diesel engine using Brown‘s gas

“…The harmful environmental impact of transport vehicles is caused by toxic emissions of internal combustion engines (Juostas, Janulevičius 2009), contamination of roadside soil (Baltrėnas et al 2009), noise and other factors (Baltrėnas et al 2004(Baltrėnas et al , 2007Gražulevičienė, Bendokienė 2009;Paulauskas, Klimas 2011). Many research papers deal with the issues related to production and application of more environmentally friendly fuel types (Bendikienė et al 2011;Baltrėnas, Kvasauskas 2008;Labeckas, Slavinskas 2010;Lebedevas et al 2011;Pukalskas et al 2009;Matijošius, Sokolovskij 2009).…”