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undergraduate thesis
Ravnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. urn:nbn:hr:149:453871
Turčić, Nikola
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

Cite this document

Turčić, N. (2024). Ravnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:453871

Turčić, Nikola. "Ravnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:453871

Turčić, Nikola. "Ravnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:453871

Turčić, N. (2024). 'Ravnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 25 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:453871

Turčić N. Ravnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2024 [cited 2024 November 25] Available at: https://urn.nsk.hr/urn:nbn:hr:149:453871

N. Turčić, "Ravnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:149:453871

Metadata
TitleRavnoteža kapljevina-kapljevina u sustavima s biodizelom na bazi propilnog estera masnih kiselina
Title (english)Liquid-liquid equilibrium in the systems involving biodiesel based on fatty acid propyl ester
AuthorNikola Turčić
MentorKristina Zagajski Kučan (mentor)
Committee memberKristina Zagajski Kučan (predsjednik povjerenstva)
Committee memberFabio Faraguna (član povjerenstva)
Committee memberMarko Rogošić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2024-07-02, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Primarni zadatak rada je proučiti faznu ravnotežu kapljevina-kapljevina u dvokomponentnim, pseudodvokomponentnim i pseudotrokomponentnim sustavima koji, uz biodizel – propilni ester masnih kiselina (eng. fatty acid propyl ester, FAPRE), čine glicerol, propanol i voda; spojevi koji su prisutni u smjesi produkata reakcije transesterifikacije kojom se biodizel sintetizira. Eksperimentalno je određena ravnoteža kapljevina-kapljevina pri 25 °C i atmosferskom tlaku, te su izmjerena fizikalna svojstva biodizela: gustoća, dinamička i kinematička viskoznost, napetost površine, točka kristalizacije, tecište i maglište, svojstva važna za primjenu biodizela kao motornog goriva. Temperaturno ponašanje biodizela istraženo je tehnikama diferencijalne pretražne kalorimetrije, termogravimetrijske analize i polarizirajuće mikroskopije. Čistoća biodizela provjerena je infracrvenom spektroskopijom s Fourierovom transformacijom. Utvrđeno je da su sustavi propanol – FAPRE, propanol – voda, propanol – glicerol i voda – glicerol mješljivi u potpunosti, sustav glicerol – FAPRE potpuno je nemješljiv kao i sustav voda – FAPRE. Voda je pogodno otapalo za uklanjanje glicerola i propanola iz produktne smjese. Fizikalna svojstva biodizela ne zadovoljavaju trenutno važeće norme za dizelska goriva i djelomično zadovoljavaju važeću normu za biodizel.
Abstract (english)
The primary goal of this investigation was determination of liquid-liquid equilibrium in pseudoternary systems consisting of fatty acid propyl esters (FAPRE) – biodiesel, glycerol, propanol and water; compounds present in product mixtures after synthesis of biodiesel by the transesterification reaction. Liquid-liquid equilibrium was experimentally measured at 25 °C and atmospheric pressure. Physical properties of biodiesel, such as dynamic viscosity, kinematic viscosity, density, surface tension, crystallization point, cloud point and pour point were also measured; these properties are important for the application of biodiesel as engine fuels. The temperature behavior of biodiesel was investigated by differential scanning calorimetry, thermogravimetic analysis, and polarized light microscopy methods. The purity of biodiesel was determined using Fourier-transform infrared spectroscopy. Results show that the systems propanol – FAPRE, propanol – water, propanol – glycerol and water – glycerol are completely miscible, The systems water – FAPRE and FAPRE – glycerol are completely immiscible. Water can be used as a solvent for the removal of glycerol and propanol from the product mixture. The physical properties of biodiesel do not satisfy the regulations in force related to diesel fuels and partially satisfy the regulations in force related to biodiesel.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:453871
Study programmeTitle: Chemical Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2024-07-03 12:21:18