20.500.12556/RUL-171501 Vpliv vrste alkohola na encimsko katalizirano sintezo biodizla The influence of alcohol type on enzyme-catalyzed biodiesel synthesis V diplomski nalogi smo preučili, kako izbira alkohola vpliva na encimsko katalizirano sintezo in kakovost pridobljenega biodizla. Biodizel smo sintetizirali iz sončničnega olja z raztopljenim komercialnim encimskim pripravkom Eversa®, za transesterifikacijo pa smo uporabili metanol in etanol. Proces smo izvajali šaržno in s pomočjo plinske kromatografije analizirali koncentracijo metilnih in etilnih estrov maščobnih kislin. Ugotovili smo, da je za sintezo najbolje uporabiti metanol v molskem razmerju z oljem 1 : 3,4, medtem ko je bilo najbolj učinkovito molsko razmerje med oljem in etanolom 1 : 4. In the thesis, we investigated how the choice of alcohol affects enzyme-catalyzed synthesis and the quality of the resulting biodiesel. Biodiesel was synthesized from sunflower oil using the dissolved commercial enzyme preparation Eversa®, with metanol and ethanol employed for transesterification. Reactions were carried out in batch mode, and the concentrations of methyl and ethyl esters of fatty acids were analyzed by gas chromatography. The optimal conditions for methanol-based synthesis were achieved at a molar ratio of 1:3.4 (oil to methanol), while for ethanol-based synthesis, the most effective molar ratio was 1:4 (oli to ethanol). biodizel maščobne kisline transesterifikacija lipaze biodiesel fatty acids transesterification lipases true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-08-27 12:10:00 2025-08-27 12:10:04 2025-09-04 09:33:15 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 24240 247628547 Kunic_Spela_-_Vpliv_vrste_alkohola_na_encimsko_katalizirano_sintezo_biodizla.pdf Kunic_Spela_-_Vpliv_vrste_alkohola_na_encimsko_katalizirano_sintezo_biodizla.pdf 1 0CAF6DE7FC4433C8CD753320B7E3BA4C 538c51e9e90c9cdf6a841dfdc72339cf9f518fec2ea1d5928080f6dd7034dab2 dfae4d85-832d-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=214848 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0