Transesterification of postfrying oils and utilization of the glycerol phase

• Autorzy: Perkowska M. , Łuczak J. , Sawicki J. , Hupka J.
• Języki publikacji: EN

Abstrakty

EN

Methyl esters synthesis using spent frying oils and subsequent utilization of the glycerol phase have been described. Potassium hydroxide (basic transesterification) at 25°C and sulfuric acid (acidic transesterification) at 60 °C were used. The conditions of the transesterification reaction which affect the yield and purity of the product esters, including the oil quality (acid number, peroxide number), were considered. It was found that dipper thermal oil degradation during frying resulted in FAME of inferior calorific value. The glycerol fraction from methanolysis was purified and used for the production of triacetin with the 76% yield.

Słowa kluczowe

EN

biodiesel; postfrying fats; fatty acid methyl esters (FAME); glycerol phase; used acetic acid; transesterification; triacetin

PL

biodiesel; olej posmażalniczy; estry metylowe kwasów tłuszczowych; frakcja glicerynowa; transestryfikacja; triacetina

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 3
• Strony: 132--134
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Perkowska M.

autor

Łuczak J.

autor

Sawicki J.

autor

Hupka J.

• Gdańsk University of Technology, Chemical Faculty, Department of Chemical Technology, ul. Narutowicza 11/12, 80-952 Gdańsk,

Bibliografia

• (1) Steiner Ch.: Biofuels for Energy Independence: A universal concept for the production of biofuels on a mass scale, Refocus, 4 (2), 2003, 26 - 28.
• (2) Twardowska I., Stefaniak S.: Postępowanie z olejami odpadowymi według prawodawstwa Unii Europejskiej, Przegląd Komunalny, 11(134), 2002, 132 - 133.
• (3) Tomasevic A. V., Siler-Marinkovic S. S.: Methanolisys of used frying oil, Fuel Processing Technology, 81, 2003, 1 -6.
• (4) Cvengroš J., Cvengrošová Z.: Used frying oils and fats and their utilization in the production of methyl esters of higher fatty acids, Biomass and Bioenergy 27, 2004, 173 - 181.
• (5) Tynek M., Hazuka Z., Pawłowicz R., Dudek M.: Changes in the frying medium during deep- frying of food rich in proteins and carbohydrates, Journal of Food Lipids, 8, 2001, 251 - 261.
• (6) Sawicki J.: Practical aspects of production of fatty acids methyl esters as biodiesel, Proceedings of 3rd International Conference on Oil Pollution, 2002, Gdansk, Poland, (Vol. 2), 17 - 18.
• (7) Sawicki J.: Utylizacja olejów i tłuszczów posmażalniczych, Recykling, 1, 49, 2005, 21 - 23.
• (8) Miesiąc I.: Metody zagospodarowania frakcji glicerynowej z procesu metanolizy oleju rzepakowego, Przemysł Chemiczny, 82, 2003, 1045 - 1047.
• (9) Bergner H., Kijora C: Freie fettsäuren und glycerin in der fütterung von mastschweinen, Fat Sience and Technology, 95, 1993, 526 - 529.
• (10) Hunter E., Applewhite T. H.: Correction of dietary fat availability estimates for wastage of food service deep - frying fats, Journal of the American Chemistry Society, 70, (1993), 613 - 617.