کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6767723 | 512461 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics of ultrasound-assisted enzymatic biodiesel production from Macauba coconut oil
ترجمه فارسی عنوان
سینتیک تولید بیودیزل آنزیمی با استفاده از سونوگرافی از روغن نارگیل ماکائوبه
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
This work reports the production of fatty acid ethyl esters (FAEE) by means of Macauba (Acrocomia aculeata) coconut oil (MCO) solvent-free enzymatic transesterification reactions using a commercial immobilized lipase (Novozym 435) under the influence of ultrasound irradiation. An experimental design was used to evaluate the effects of temperature (40-70 °C), enzyme (5-20 wt%) concentration, oil to ethanol molar ratio (1:3-1:10) and output irradiation power (40-70 % of the maximum supply value) on the reaction yield. Besides, a kinetic study varying the enzyme concentration was also carried out. Results show that ultrasound-assisted lipase-catalyzed transesterification of MCO with ethanol in solvent-free system might be a potential alternative route to conventional alkali-catalyzed and/or traditional enzymatic methods, as reaction yields around 70 wt% were obtained at mild irradiation power supply (⼠132 W), and temperature (65 °C) in a short reaction time, 30 min. Reutilization of enzyme showed that it may be advantageously employed up to 5 reuse cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 76, April 2015, Pages 388-393
Journal: Renewable Energy - Volume 76, April 2015, Pages 388-393
نویسندگان
Simone Michelin, Frederico M. Penha, Melania M. Sychoski, Robison P. Scherer, Helen Treichel, Alexsandra Valério, M. Di Luccio, Débora de Oliveira, J. Vladimir Oliveira,