prikaz prve stranice dokumenta Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije
  Download
PDF 1.76 MB
undergraduate thesis
Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. urn:nbn:hr:149:446134
Šipek, Antonela
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

Šipek, A. (2024). Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:446134

Šipek, Antonela. "Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:446134

Šipek, Antonela. "Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:446134

Šipek, A. (2024). 'Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 04 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:446134

Šipek A. Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2024 [cited 2024 November 04] Available at: https://urn.nsk.hr/urn:nbn:hr:149:446134

A. Šipek, "Karakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:149:446134

Metadata
TitleKarakterizacija i pročišćavanje sirovog glicerola nakon transesterifikacije
Title (english)Characterisation and purification of crude glycerol after transesterification
AuthorAntonela Šipek
MentorAna Petračić (mentor)
Committee memberAna Petračić (predsjednik povjerenstva)
Committee memberAleksandra Sander (član povjerenstva)
Committee memberKatarina Mužina (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2024-07-12, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Transesterifikacija ili reakcija nastajanja biodizela je proces u kojem trigliceridi iz ulja ili masti reagiraju s metanolom ili etanolom uz dodatak katalizatora i tvore biodizel kao glavni produkt. Kao nusprodukt transesterifikacije dobiva se sirovi glicerol koji se sastoji od mnogih nečistoća te se tretira kao otpad. Iz navedenog razloga ekonomska konkurentnost biodizela, kao i glicerola opada. Kako bi biodizel dobio prednost nad tradicionalnim dizelom potrebno je povisiti globalnu vrijednost biodizela. Cilj ovog rada je ispitati može li se ekstrakcijom pomoću niskotemperaturnih eutektičkih otapala pročistiti glicerol na jednostavan i povoljan način. Pripremljeni su uzorci sirovog glicerola transesterifikacijom otpadnog ulja kave i suncokretovog ulja. Provedena je fizikalna karakterizacija te ispitivanje mješljivosti sirovog glicerola s različitim eutektičkim otapalima i pokazalo se kako su eutektička otapala neprikladna za proces ekstrakcije nečistoća iz sirovog glicerola jer dolazi do potpunog miješanja otapala i sirovog glicerola. Glicerol je u konačnici uspješno pročišćen komercijalnom metodom koja uključuje neutralizaciju, acidifikaciju, isparavanje, ekstrakciju te mikrofiltraciju.
Abstract (english)
Transesterification or the biodiesel formation reaction is a process in which triglycerides form vegetable oils or fats react with methanol or ethanol in the presence of a catalyst, resulting in biodiesel as the main product. As a byproduct of transesterification, crude glycerol is obtained, which contains many impurities and is treated as waste. Due to these reasons, the economic competitiveness of biodiesel, as well as glycerol, decreases.To give biodiesel an advantage over traditional diesel, it is necessary to increase the global value of biodiesel. The aim of this study is to investigate whether extraction using deep eutectic solvents can purify glycerol in a simple and affordable way. Samples of crude glycerol were prepared by transesterification of waste coffee oil and sunflower oil. Physical characterization and miscibility testing of crude glycerol with different eutectic solvents was carried out and it was shown that eutectic solvents are unsuitable for the process of extraction of impurities from crude glycerol because a complete mixing of solvents and crude glycerol occurs. Glycerol was ultimately successfully purified by a commercial method that includes neutralization, acidification, evaporation, extraction and microfiltration.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:446134
Study programmeTitle: Materials Science and 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
Terms of useLicence In copyright icon
Created on2024-07-19 13:45:57