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undergraduate thesis
Katalizatori u proizvodnji biodizela
završni rad
2022. urn:nbn:hr:167:450423
Krešić, Iva
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Cite this document

Krešić, I. (2022). Katalizatori u proizvodnji biodizela : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:450423

Krešić, Iva. "Katalizatori u proizvodnji biodizela : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:450423

Krešić, Iva. "Katalizatori u proizvodnji biodizela : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:450423

Krešić, I. (2022). 'Katalizatori u proizvodnji biodizela : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:450423

Krešić I. Katalizatori u proizvodnji biodizela : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2022 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:167:450423

I. Krešić, "Katalizatori u proizvodnji biodizela : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:167:450423

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Metadata
TitleKatalizatori u proizvodnji biodizela : završni rad
Title (english)Catalysts used in biodiesel syntesis : bachelor thesis
AuthorIva Krešić
MentorBranka Andričić (mentor)
Committee memberAni Radonić (predsjednik povjerenstva)
Committee memberNataša Stipanelov-Vrandečić (član povjerenstva)
Committee memberBranka Andričić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2022-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Biodizel, alternativa fosilnom dizelu, dobiva se procesom transesterifikacije, odnosno alkoholize. Transesterifikacija je reakcija zamjene alkoksilnih skupina u kojoj jedan ester prelazi u drugi. Postojeći komercijalni procesi dobivanja biodizela uglavnom se zasnivaju na homogeno-bazno kataliziranoj transesterifikaciji biljnih ulja. Zbog niske cijene i visoke reaktivnosti najčešće se kao katalizatori primjenjuju NaOH i KOH. Nedostatak ovoga procesa je saponifikacija te neučinkovito odvajanje katalizatora iz reakcijske smjese. U zadnje se vrijeme vrlo intenzivno istražuju heterogeni katalizatori, zbog sigurne uporabe i mogućnosti njihova recikliranja. Najviše je u uporabi CaO. Enzimi kao katalizatori najnovije generacije do sada su pokazali izuzetnu aktivnost u katalitičkoj reakciji, ali zbog visoke cijene i rizika deaktivacije njihov potencijal nije iskorišten u industriji. Tipičan primjer postupka transesterifikacije s homogenim katalizatorom je Lurgijev postupak, a s heterogenim katalizatorom Esterfip-H proces.
Abstract (english)
Biodiesel is an alternative to fossil diesel, obtained through the process of transesterification, i.e. alcoholysis. Transesterification is a reaction of replacement of alkoxy groups of alcohols when one ester converts to another. Existing commercial biodiesel production processes are mainly based on homogeneous base-catalyzed transesterification of vegetable oils. Due to the low price and high reactivity, NaOH and KOH are most often used as catalysts. Disadvantage of this process is saponification and ineffective separation of the catalyst from the reaction mixture. Recently, heterogeneous catalysts have been extensively researched, due to their safe use and the possibility of their recycling. CaO is most commonly used. Enzymes as catalysts have so far shown exceptional activity as catalysts, but due to their high price and risk of deactivation, they haven't been used as much in the industry. A typical example of the transesterification process with a homogeneous catalyst is the Lurgi process, and with a heterogeneous catalyst the Esterfip-H process.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:450423
Study programmeTitle: Chemical Technology; specializations in: Chemical Engineering, Environmental Protection
Course: Chemical Engineering
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
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Created on2023-03-22 07:29:47