Biodiesel production: sunflower oil esterification catalyzed by lipase (CROSBI ID 614347)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Budžaki, Sandra ; Šalić, Anita ; Zelić, Bruno ; Tišma, Marina
engleski
Biodiesel production: sunflower oil esterification catalyzed by lipase
Biodiesel is a mixture of alkyl esters of fatty acids originated from biological source. Due to its similarities with petroleum diesel, it can be used in diesel engines as alternative fuel. Currently, the industrial production of biodiesel e.g. transesterification is conducted chemically with alkaline catalysts. In this work enzymatic synthesis of biodiesel has been investigated. Enzymatic catalysis offers numerous advantages since it is performed under mild conditions, without additional energy consumptions, with simple glycerol removal and without generation of chemical waste [1]. Transesterifications of edible sunflower oil catalyzed by lipase from Thermomyces lanuginosus (Lipolase 100L) were conducted in laboratory batch and fed-batch reactors using methanol as alkyl donor. Experiments were conducted at three different temperatures (T = 40, 50 and 60 °C) and by two different mechanisms: one-step and four-step reactions. The four-step mechanism was carried out in order to avoid inactivation of the enzyme with methanol [2]. In one-step experiment the molar ratio of oil to methanol was 1 : 3.4, while in the four-step experiment the molar ratio of oil to methanol at the beginning of the process was 1:1 after what methanol was fed into reaction mixture every 12 hours (molar ratio of oil to methanol was 1:0.8). All experiments were performed four days using equal lipase initial concentration ( 0.1 mg/mL ; S.A. = 100 000 U/mg). The highest conversion of fatty acids into corresponding esters of X = 95 % was achieved for one-step reaction performed at 40 °C.
biodiesel; lipase; sunflower oil
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
13-13.
2014.
nije evidentirano
objavljeno
978-953-7005-34-4
Podaci o matičnoj publikaciji
International Scientific and Professional Conference 15th Ružička days "Today science - tomorrow industry"
Šubarić, Drago ; Planinić, Mirela ; Ačkar, Đurđica ; Pavleković, Ivana
Osijek: Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku ; Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI)
Podaci o skupu
XV. Ružičkini dani "Danas znanost sutra industrija"
predavanje
11.09.2014-12.09.2014
Vukovar, Hrvatska