Pular para o conteúdo
Merck
  • Ultrasound intensification suppresses the need of methanol excess during the biodiesel production with Lipozyme TL-IM.

Ultrasound intensification suppresses the need of methanol excess during the biodiesel production with Lipozyme TL-IM.

Ultrasonics sonochemistry (2015-05-03)
Preeti B Subhedar, Claudia Botelho, Artur Ribeiro, Rita Castro, Maria Alcina Pereira, Parag R Gogate, Artur Cavaco-Paulo
RESUMO

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.

MATERIAIS
Número do produto
Marca
Descrição do produto

Sigma-Aldrich
Metanol, anhydrous, 99.8%
Sigma-Aldrich
Estearato de metila, ~99% (GC)
Sigma-Aldrich
Methyl oleate, 99%
Sigma-Aldrich
Methyl palmitate, ≥99% (capillary GC)
Sigma-Aldrich
Methyl linoleate, ≥98% (GC)
Sigma-Aldrich
Clorofórmio, anhydrous, ≥99%, contains 0.5-1.0% ethanol as stabilizer
Sigma-Aldrich
Clorofórmio, anhydrous, contains amylenes as stabilizer, ≥99%
Sigma-Aldrich
Methyl palmitate, ≥97%
Sigma-Aldrich
Methyl oleate, technical grade, 70%
Sigma-Aldrich
Clorofórmio, ≥99%, PCR Reagent, contains amylenes as stabilizer
Sigma-Aldrich
Estearato de metila, ≥96%, FG
Sigma-Aldrich
Metanol, NMR reference standard
Sigma-Aldrich
Methanol solution, NMR reference standard, 4% in methanol-d4 (99.8 atom % D), NMR tube size 3 mm × 8 in.
Sigma-Aldrich
Methanol-12C, 99.95 atom % 12C