Production of biodiesel from waste frying oils

Investigation of performance and emission characteristics of waste cooking oil as biodiesel in a diesel engine

“…The performance of biodiesel-fueled engines is better than that of diesel-fueled engines in terms of thermal efficiency, brake-specific energy consumption, and smoke opacity, wear of vital components and exhaust emissions for an entire range of operations (Agarwal and Das 2001). These findings are supported by researchers who observed similar behavior for all biodiesel blends with fuel of various origins Felizardo et al 2006;Mangesh and Dalai 2006;Ulusoy et al 2004). Gopal et al (2014) have observed that there is significant reduction in CO, unburned HC and smoke emissions for biodiesel and its blends compared to diesel fuel.…”

“…Many studies have been conducted on the use of alternative input products such as rape seed and soybean WCOME in the production of biodiesel for use in diesel engines (Altıparmak et al 2007;Felizardo et al 2006;Kaplan et al 2006;Mangesh and Dalai 2006;Nachid et al 2015;Selvan and Nagarajan 2013;Ulusoy et al 2004Ulusoy et al , 2016. The performance and smoke results obtained from an electricity generator engine operating on WCOME showed that the smoke reduction, compared to that of conventional diesel fuel, was around 60% for B100 (100% biodiesel) and around 25% for B20 (20% biodiesel) .…”

Biodiesel de soja: reação de transesterificação para aulas práticas de química orgânica

“…Uma série de metodologias para obtenção de biodiesel encontra-se disponível na literatura [7][8][9][10][12][13][14][15][16][17][18][19] . Nelas são discutidas as variá-veis que influenciam a eficiência do processo, bem como a qualidade do produto formado, como por ex., a quantidade de material catalítico, a razão molar álcool/óleo vegetal, a intensidade da agitação mecânica, a pureza dos reagentes, o teor de ácidos graxos livres no material de partida e o tempo reacional.…”

“…Óleos vegetais usados também são considerados como uma fonte promissora para obtenção do biocombustível, em função do baixo custo e por envolver reciclagem de resíduos 13 . O produto obtido é comparável com o biodiesel obtido a partir do óleo refinado 14 .…”

Potential to increase indigenous biodiesel production to help meet 2020 targets – An EU perspective with a focus on Ireland

“…In the case of oils 338 with a high acid value, a pre-treatment step can be used to reduce the acid value. The pre-treatment step consists of an acid catalyzed reaction with an alcohol in order to transform the 340 free fatty acids into their corresponding esters [27]. (hydrolysis, saponification) in a category 2 oleochemical plant.…”