2010
DOI: 10.1016/j.supflu.2010.03.009
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Biodiesel production using supercritical alcohols with a non-edible vegetable oil in a batch reactor

Abstract: In the present work, the transesterification of non-edible oil with methanol and ethanol is studied. The reactor phase transitions are directly observed in a double windowed cylindrical reactor and the conversion to fatty esters is measured. The optimization of the process conditions was carried out based on a statistical design of experiments where the key process variables were studied over different ranges to obtain a reliable model for the efficiency of the reaction as a function of reaction time, temperat… Show more

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Cited by 74 publications
(48 citation statements)
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References 30 publications
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“…Estes resultados indicaram que o tempo de residência utilizado contribuiu positivamente na variável resposta, já que a mistura reacional permanece mais tempo sob as condições reacionais favoráveis, além de aumentar os choques efetivos entre as moléculas reagentes, permitindo alcançar maiores valores de conversão. Estes resultados são consistentes com os obtidos na literatura, onde maiores tempos de residência colaboraram para maiores rendimentos em ésteres (Silva et al, 2007;Gui et al, 2009;Valle et al, 2010).…”
Section: Resultsunclassified
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“…Estes resultados indicaram que o tempo de residência utilizado contribuiu positivamente na variável resposta, já que a mistura reacional permanece mais tempo sob as condições reacionais favoráveis, além de aumentar os choques efetivos entre as moléculas reagentes, permitindo alcançar maiores valores de conversão. Estes resultados são consistentes com os obtidos na literatura, onde maiores tempos de residência colaboraram para maiores rendimentos em ésteres (Silva et al, 2007;Gui et al, 2009;Valle et al, 2010).…”
Section: Resultsunclassified
“…Esta tendência comprova que a variável temperatura contribui positivamente na variável resposta, pois com maiores valores de temperatura, aumenta-se a homogeneidade da mistura e a velocidade da reação, obtendo-se maiores rendimentos em ésteres (Kusdiana e Saka, 2001). Estes resultados estão em concordância com os obtidos na literatura (Kusdiana e Saka, 2001;Madras et al, 2004;Silva et al, 2007;Gui et al, 2009e Valle et al, 2010.…”
Section: Resultsunclassified
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“…In addition, the use of ethanol in biodiesel synthesis is appealing because it is produced only from biorenewable sources (Encinar et al, 2002;Stamenkovik et al, 2011). In recent years several different technologies have been considered to optimize ethyl biodiesel production (Valle et al, 2010;Kanitkar et al, 2011;Zhang et al, 2012). Considering the oil source for biodiesel production, the chemical composition of fodder radish (Raphanus sativus) oil, its agricultural characteristics and ester physical properties make this oil an interesting alternative for biodiesel production (Domingos et al, 2008;Crusciol et al, 2005).…”
Section: Introductionmentioning
confidence: 99%
“…Despite the existence of a number of studies about the production of bio-diesel from several vegetable oils, there is still a lack of thermodynamic data for the phases that are present in the processes involving bio-diesel (Liu et al 2008;Valle et al 2010). Reliable thermodynamic data are necessary for the modeling and design of the process.…”
Section: Introductionmentioning
confidence: 99%