Ultrasonic irradiation with vibration for biodiesel production from soybean oil by Novozym 435 |
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| Institution: | 1. Department of Physical Chemistry and Applied Thermodynamics, EPS, Edificio Leonardo da Vinci, Campus de Rabanales, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, ceiA3, 14071 Córdoba, Spain;2. Department of Electrical Engineering, EPS, Edificio Leonardo da Vinci, Campus de Rabanales, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, ceiA3, 14071 Córdoba, Spain;1. Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India;2. Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, 4710 057 Braga, Portugal;1. Department of Chemical Engineering, University of Hyogo, Himeji, Hyogo, Japan;2. National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan;3. Graduate School of Life Science, University of Hyogo, Koto 3-2-1, Kamigori, Ako, Hyogo 678-1297, Japan;4. Graduate School of Biostudies, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto 606-8501, Japan;1. Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, I-10125 Turin, Italy;2. Nanjing Institute of Environmental Science of the Ministry of Environmental Protection of China, Jiangwangmiao Str. 8, Nanjing, China;3. CICYTEX/Instituto del Corcho, la Madera y el Carbón Vegetal, C/Pamplona s/n, 06800 Mérida, Badajoz, Spain;4. Dpto. Quimica Organica e Inorganica, Facultad de Ciencias-UEX and IACYS-Unidad de Química Verde y Desarrollo Sostenible, E-06006 Badajoz, Spain;5. School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;1. Department of Chemical Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan;2. Faculty of Environment, University of Science, VNU-HCM, Viet Nam;3. Honda Electronics Co., Ltd., Toyohashi, Aichi 441-3193, Japan;4. Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan |
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| Abstract: | The production of biodiesel with soybean oil and methanol through transesterification by Novozym 435 (Candida antarctica lipase B immobilized on polyacrylic resin) were conducted under two different conditions—ultrasonic irradiation and vibration to compare their overall effects. Compared with vibration, ultrasonic irradiation significantly enhanced the activity of Novozym 435. The reaction rate was further increased under the condition of ultrasonic irradiation with vibration (UIV). Effects of reaction conditions, such as ultrasonic power, water content, organic solvents, ratio of solvent/oil, ratio of methanol/oil, enzyme dosage and temperature on the activity of Novozym 435 were investigated under UIV. Under the optimum conditions (50% of ultrasonic power, 50 rpm vibration, water content of 0.5%, tert-amyl alcohol/oil volume ratio of 1:1, methanol/oil molar ratio of 6:1, 6% Novozym 435 and 40 °C), 96% yield of fatty acid methyl ester (FAME) could be achieved in 4 h. Furthermore, repeated use of Novozym 435 after five cycles showed no obvious loss in enzyme activity, which suggested this enzyme was stable under the UIV condition. These results indicated that UIV was a fast and efficient method for biodiesel production. |
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