Pregled bibliografske jedinice broj: 1133122
Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks
Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks // 9th International Conference Fuel Science - From Production to Propulsion 2021
Aachen, Njemačka, 2021. str. 1-2 (predavanje, međunarodna recenzija, prošireni sažetak, znanstveni)
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Naslov
Stability of waste-based zeolite supported CaO
catalyst for biodiesel
production from waste oily feedstocks
Autori
Pavlović, Stefan ; Marinković, Dalibor ; Milovanović, Biljana ; Tišma, Marina ; Mojović, Ljiljana ; Stanković, Miroslav
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni
Izvornik
9th International Conference Fuel Science - From Production to Propulsion 2021
/ - , 2021, 1-2
Skup
9th International Conference Fuel Science - From Production to Propulsion 2021
Mjesto i datum
Aachen, Njemačka, 22.06.2021. - 24.06.2021
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
biodiesel ; waste cooking oil ; waste-based zeolite supported CaO catalyst
Sažetak
Waste-based zeolite supported CaO catalyst (20CaO/ZMFA) was synthesized by ultrasound- assisted impregnation from alcoholic suspension. Zeolite was previously synthesized from lignite coal fly ash (FA) by alkali activation in miniature rotating autoclave reactors (6.25 M NaOH, 260 °C, 4 h), whereas CaO was prepared by chicken eggshell (ES) calcination (900 ºC, 4 h). The final catalyst was obtained by precursor calcination at 550 °C, 4 h. The obtained catalyst was used for catalyst stability tests (reusability and leaching) in transesterification (methanol/oil molar ratio of 12/1, catalyst concentration of 4 wt%, and temperature of 60 °C) of three types of oily feedstocks, fresh sunflower oil (SFO), waste cooking oil (WCO) and model thermal treated (230 °C, 5 days) sunflower oil (SFOTT). The concentration of triacylglycerols (TAGs) and fatty acid methyl esters (FAMEs) was determined by GC and HPLC, respectively. The 20CaO/ZMFA exhibited high activity (FAME content > 96.5 % for 180 min) in the transesterification of all three oily feedstocks. The stability tests are shown that catalyst is stable even in four reaction cycles for SFO and WCO, whereas the Ca2+ leaching was significantly lower compared to similar catalytic systems.
Izvorni jezik
Engleski
Znanstvena područja
Biotehnologija
