Ultrasound intensification suppresses the need of methanol excess during the biodiesel production with Lipozyme TL-IM.
The synthesis of biodiesel from sunflower oil and methanol based on transesterification using the immobilized lipase from Thermomyces lanuginosus (Lipozyme TL-IM) has been investigated under silent conditions and under an ultrasound field. Ultrasound assisted process led to reduced processing time and requirement of lower enzyme dosage. We found for the first time that oil to methanol ratio of 1:3 was favored for the ultrasound assisted enzymatic process which is lower than that observed for the case of conventional stirring based approach (ratio of 1.4). Our results indicate that intensification provided by ultrasound suppresses the need of the excess of the methanol reactant during the enzymatic biodiesel production. Ultrasound assisted enzymatic biodiesel production is therefore a faster and a cleaner processes.
Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
Preeti B
PB
Subhedar
Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, 4710 057 Braga, Portugal.
Claudia
C
Botelho
Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, 4710 057 Braga, Portugal.
Artur
A
Ribeiro
Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, 4710 057 Braga, Portugal.
Rita
R
Castro
Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, 4710 057 Braga, Portugal.
Maria Alcina
MA
Pereira
Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
Parag R
PR
Gogate
Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, 4710 057 Braga, Portugal. Electronic address: artur@deb.uminho.pt.
Artur
A
Cavaco-Paulo
D056804:Biofuels; D004800:Enzymes, Immobilized / Q000737:chemistry / Q000378:metabolism; D004951:Esterification; D032641:Eurotiales / Q000201:enzymology; D006863:Hydrogen-Ion Concentration; D008049:Lipase / Q000737:chemistry / Q000378:metabolism*; D000432:Methanol / Q000737:chemistry*; D013696:Temperature; D000069453:Ultrasonic Waves
D056804:Biofuels; D004800:Enzymes, Immobilized; C093666:Lipozyme; D008049:Lipase; D000432:Methanol
Biodiesel; Immobilized lipase; Intensification; Transesterification; Ultrasound