Naslov
Scaling up Extractive Deacidification of Waste Cooking Oil

Autori
Sander, Aleksandra ; Petračić, Ana ; Zokić, Iva ; Vrsaljko, Domagoj

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Digital Proceedings of 16th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES / Ban, Marko et al. - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2021, 1-16

Skup
16th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES)

Mjesto i datum
Dubrovnik, Hrvatska, 10.10.2021. - 15.10.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Deep eutectic solvents ; feedstock ; hydrodynamics ; liquid-liquid extraction ; scale-up ; waste cooking oil

Sažetak
Waste feedstocks such as used cooking oil have to be purified from free fatty acids prior to biodiesel production. Extractive deacidification with deep eutectic solvents is a promising alternative to conventional purification methods. To evaluate the process of extractive deacidification of waste cooking oil, a full set of physical, hydrodynamic and kinetic data were determined experimentally on a laboratory scale. Hydrodynamic and kinetic experiments were performed in three geometrically similar jacketed agitated vessels. Vessels were equipped with axial flow impeller (four pitched blade impeller). Physical properties (density, viscosity and surface tension) were determined experimentally. Preliminary hydrodynamic experiments involve several model systems without mass transfer. As a result, correlation between power number and Reynolds number as well as scale up criterion was developed. Obtained dependencies were correlated with the physical properties. Mixing intensity for achieving complete dispersion was determined. Second stage of investigation involves two sets of experiments, hydrodynamic and kinetic, with interphase mass transfer (extraction of free fatty acids from waste cooking oil with deep eutectic solvent, potassium carbonate:ethylene glycol, 1:10). Obtained results enable understanding interphase mass transfer and prediction of mass transfer coefficient from the derived dimensionless correlations. The major hypothesis was that at the same dispersion rate the same separation rate is achieved (the same purity of raffinate phase). This research will be helpful for developing continuously operated Karr column for deacidification of waste cooking oil.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA