2014
DOI: 10.1016/j.fuel.2013.08.033
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Alkaline-catalyzed ethanolysis of soybean oil ethanolic miscella

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Cited by 11 publications
(6 citation statements)
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“…This process generates two liquid phases that separate, naturally, upon cooling: a lighter phase composed of, mostly, ethanol with small amounts of oil (~3%) and a denser, oil‐rich phase containing ethanol (~7%). Research has shown that the extraction of vegetable oils using ethanol at near‐boiling point temperatures (~78 °C) generates miscella (oil–solvent mixtures) with constant composition (Abraham et al, ; Beckel et al, ; Sangaletti‐Gerhard et al, ). The production of FAEE from oil‐rich ethanolic miscella has been demonstrated to be a technically and economically feasible alternative to the use of refined vegetable oils (Sangaletti‐Gerhard et al, ).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…This process generates two liquid phases that separate, naturally, upon cooling: a lighter phase composed of, mostly, ethanol with small amounts of oil (~3%) and a denser, oil‐rich phase containing ethanol (~7%). Research has shown that the extraction of vegetable oils using ethanol at near‐boiling point temperatures (~78 °C) generates miscella (oil–solvent mixtures) with constant composition (Abraham et al, ; Beckel et al, ; Sangaletti‐Gerhard et al, ). The production of FAEE from oil‐rich ethanolic miscella has been demonstrated to be a technically and economically feasible alternative to the use of refined vegetable oils (Sangaletti‐Gerhard et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…Extraction of vegetable oils with ethanol, although requiring higher working temperatures (energy consumption) than conventional processes with commercial hexane, can present several advantages. Soybean meal from ethanolic extraction has better organoleptic traits and a good protein dispersibility index and passes the urease test (for trypsin inhibitor activity) without the need for thermal treatment (toasting) (Beckel et al, ; Sangaletti‐Gerhard et al, ). In addition, the oil‐rich miscella from ethanolic extraction can be directly transesterified to FAEE without the need for oil‐refining steps or solvent distillation as would be mandatory in the case of industrial extraction using commercial hexane (Sangaletti‐Gerhard et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…A transesterificação direta por catálise alcalina é uma ótima alternativa para a produção de biodiesel, pois diminui custos com a matéria-prima (SANGALETTI- GERHARD et al, 2014). Contudo, o ensaio com miscelas ácidas, como a de amendoim, mostrou que a transesterificação direta tem na acidez do óleo um fator bastante limitante, mesmo com o aumento da concentração de catalisador, que provocou uma reação de saponificação em detrimento da transesterificação.…”
Section: Condições Para a Produção De Biodieselunclassified
“…O rendimento com a miscela de amendoim (65%) ficou abaixo do rendimento alcançado na transesterificação direta da miscela rica de soja (97,2%) (SANGALETTI-GERHARD et al, 2014), o que pode ser explicado pela qualidade inferior da miscela rica em óleo de amendoim (1,5 % de acidez), comparada à miscela rica em óleo de soja (0,4 %).…”
Section: Condições Para a Produção De Biodieselunclassified
“…Nos ensaios, principalmente com etanol, se observaram com facilidade a formação de gel e/ou emulsão durante o repouso e/ou lavagem, as quais dificultaram a separação e purificação dos ésteres etílicos (Berchmans & Hirata, 2008;Om Tapanes et al, 2008;Akbar et al, 2009;Mendow et al, 2011;Sangaletti-Gerhard et al, 2014) como se percebe na Figura 7. Após remover o sabão, provavelmente, o gel que se observa ligado à fase biodiesel (Figura 7B) seja de compostos intermediários da transesterificação, isto é, composto por diglicerídeos e monoglicerídeos (Aranda et al, 2008;Avellaneda, 2010).…”
Section: Determinação Das Condições Reacionais De Transesterificaçãounclassified