Optimization of biodiesel production from corn oil by methanolysis catalyzed by corn cob ash

Milan D.  Kostić; Marija B.  Tasić; Ivica G.  Đalović; Milan O.  Biberdžić; Petar M.  Mitrović; Olivera S.  Stamenković; Vlada B.  Veljković

doi:10.5937/ror1801053K

Autori

Milan D. Kostić University of Nis, Faculty of Technology, Leskovac, Serbia Author https://orcid.org/0000-0003-2883-1474
Marija B. Tasić University of Nis, Faculty of Technology, Leskovac, Serbia Author https://orcid.org/0000-0002-2048-1740
Ivica G. Đalović Institute of Field and Vegetable Crops, Novi Sad, Serbia Author
Milan O. Biberdžić University of Pristina, Faculty of Agriculture, Lesak, Serbia Author https://orcid.org/0000-0002-7259-3357
Petar M. Mitrović Institute of Field and Vegetable Crops, Novi Sad, Serbia Author
Olivera S. Stamenković University of Nis, Faculty of Technology, Leskovac, Serbia Author https://orcid.org/0000-0002-9981-5845
Vlada B. Veljković Univeristy of Niš, Faculty of Technology, Leskovac, Serbia Author https://orcid.org/0000-0002-1671-2892

DOI:

https://doi.org/10.5937/ror1801053K

Ključne reči:

Biodizel, Pepeo kurdeljke, Kukuruzne klice, Optimizacija, Metodologija površine odziva, Transesterifikacija

Apstrakt

Upotreba jeftinih ili bezvrednih sirovina, kao što su sporedni proizvodi, u proizvodnji biodizela ima za rezultat smanjene ukupne troškove procesa. U ovom radu su prikazani rezultati upotrebe kukuruznih klica i okrunjenog kukuruznog klipa (kurdeljke, krudeljke) kao sporednih proizvoda iz proizvodnje kukuruznog skroba u proizvodnji biodizela metanolizom ulja izdvojenog iz kukuruznih klica, katalizovane pepelom dobijenim sagorevanjem kurdeljke. Glavni cilj je bila optimizacija molskog odnosa metanol-ulje, količine katalizatora i reakcionog vremena u šaržnom reaktoru sa mešanjem u odnosu na sadržaj metilestra masnih kiselina (MEMK). Statističko modelovanje i optimizacija izvršeni su korišćenjem kvadratnog modela, razvijenog metodologijom odzivne površine, u kombinaciji sa 33 faktorijelnim planom sa 3 centralne tačke. Sadržaj MEMK-a je određen metodom tečne hromatografije pod visokim pritiskom. Analiza varijanse je pokazala da su samo uticaji količine katalizatora, reakcionog vremena, interakcije količine katalizatora sa reakcionim vremenom i sva tri kvadratna člana statistički značajni sa nivoom pouzdanosti od 95 %. Pod optimalnim reakcionim uslovima (količina katalizatora 19,8 %, molski odnos metanol/ulje 9,4 mol/mol i reakciono vreme 31 min) dobijen je sadržaj MEMK-a od 98,1 %, koji se slaže sa predviđenim sadržajem MEMK-a (98,4 %). Prema tome, i kukuruzne klice i kurdeljka mogu biti pogodne sirovine za proizvodnju biodizela.

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