Continuous lipase-catalyzed production of fatty acid ethyl esters from soybean oil in compressed fluids |
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Authors: | C Dalla Rosa MB Morandim JL Ninow D Oliveira H Treichel J Vladimir Oliveira |
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Institution: | aPrograma de Pós-Graduação em Engenharia de Alimentos, URI – Campus de Erechim, Av. Sete de Setembro, 1621, 99700-000 Erechim, RS, Brazil;bDepartamento de Engenharia Química e de Alimentos, UFSC, 88040-900 Florianópolis, SC, Brazil |
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Abstract: | This work investigates the continuous production of fatty acid ethyl esters from soybean oil in compressed fluids, namely carbon dioxide, propane and n-butane, using immobilized Novozym 435 as catalyst. The experiments were performed in a packed-bed bioreactor evaluating the effects of temperature in the range of 30–70 °C, from 50 to 150 bar, oil to ethanol molar ratio of 1:6–1:18 and solvent to substrates mass ratio of 4:1–10:1. In contrast to the use of carbon dioxide and n-butane, results showed that lipase-catalyzed alcoholysis in a continuous tubular reactor in compressed propane might be a potential route to biodiesel production as high reaction conversions were achieved at mild temperature (70 °C) and pressure (60 bar) conditions in short reaction times. |
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Keywords: | Biodiesel Soybean oil Lipase Propane Continuous process |
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