Vpliv vrste alkohola na encimsko katalizirano sintezo biodizla

Kunič, Špela (avtor), Žnidaršič Plazl, Polona (mentor)

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.

• Jezik: Slovenski jezik
• Ključne besede: biodizel, maščobne kisline, transesterifikacija, lipaze
• Vrsta gradiva: Diplomsko delo/naloga
• Tipologija: 2.11 - Diplomsko delo
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Leto izida: 2025
• PID: 20.500.12556/RUL-171501
• COBISS.SI-ID: 247628547
• Datum objave v RUL: 27.08.2025

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: The influence of alcohol type on enzyme-catalyzed biodiesel synthesis

Izvleček

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).

• Ključne besede: biodiesel, fatty acids, transesterification, lipases