Valorization of Waste Cooking Oil into Biodiesel over an Anionic Resin as Catalyst

Energy from Waste Materials and Unconventional Sources

“…Transesterification of crude waste oil gave much lower yields, due to the high levels of free fatty acids in the oil. WCO with high acidity was pretreated before transesterification and biodiesel with low water content and light color can be prepared from the WCOs by using of different catalysts (Lam et al 2010;Sharma and Singh 2011;Brito et al 2012;Melero et al 2012;Patel et al 2013;Lopes et al 2015;Rosa et al 2015).…”

Waste Energy for Life Cycle Assessment

“…WCO with high acidity was pretreated before transesterification and biodiesel with low water content and light color can be prepared from the WCOs by using of different catalysts (Lam et al 2010;Sharma and Singh 2011;Brito et al 2012;Melero et al 2012;Patel et al 2013;Lopes et al 2015;Rosa et al 2015). Water and free acid contents are important factors in the catalytic transesterification of the WCO.…”

Solid Acid Resin Amberlyst 45 as a Catalyst for the Transesterification of Vegetable Oil

“…Besides, the optimal methanol to oil molar ratio for the CaO catalysts was higher than the practical ratio of 6:1 for homogeneously catalyzed transesterification (Roschat et al, 2016) and as a result of the solubility of glycerol in alcohol, in a batch reactor, a vast excess of methanol increases the glycerol concentration in the mixture shifting the equilibrium to the reactants (Maneerung et al, 2016). Basic polymeric resins, such as Amberlite IRA96 (Rosa et al, 2015) and Dowex monosphere 550 A (Marchetti et al, 2007), was shown to be active for transesterification, however, they also require high alcohol/oil ratio, making the process unrealistic for large-scale application.…”