TY - JOUR
T1 - Continuous enzymatic production of biodiesel from virgin and waste sunflower oil in supercritical carbon dioxide
AU - Rodrigues, Ana Rita
AU - Paiva, Alexandre
AU - Da Silva, Marco Gomes
AU - Simões, Pedro
AU - Barreiros, Susana
N1 - We gratefully acknowledge the support granted by Bio Renewals. We thank Novozymes A/S, Bagsvaerd, Denmark for the gift of Lipozyme TL IM and Novozym 435. A. Paiva would like to acknowledge the European Commission within the framework of the Marie Curie European Reintegration Grant ‘Continuous production of biodiesel from waste cooking oil using green engineering’ (EC Contract No: PERG02-GA-2007-224930) and Fundação para a Ciência e a Tecnologia (FCT, Portugal) through the contract SFRH/BPD/44946/2008.
PY - 2011/1/1
Y1 - 2011/1/1
N2 - A continuous process for biodiesel production in supercritical carbon dioxide was implemented. In the transesterification of virgin sunflower oil with methanol, Lipozyme TL IM led to fatty acid methyl esters yields (FAME) that exceeded 98% at 20 MPa and 40 °C, for a residence time of 20 s and an oil to methanol molar ratio of 1:24. Even for moderate reaction conversions, a fractionation stage based on two separators afforded FAME with >96% purity. Lipozyme TL IM was less efficient with waste cooking sunflower oil. In this case, a combination of Lipozyme TL IM and Novozym 435 afforded FAME yields nearing 99%.
AB - A continuous process for biodiesel production in supercritical carbon dioxide was implemented. In the transesterification of virgin sunflower oil with methanol, Lipozyme TL IM led to fatty acid methyl esters yields (FAME) that exceeded 98% at 20 MPa and 40 °C, for a residence time of 20 s and an oil to methanol molar ratio of 1:24. Even for moderate reaction conversions, a fractionation stage based on two separators afforded FAME with >96% purity. Lipozyme TL IM was less efficient with waste cooking sunflower oil. In this case, a combination of Lipozyme TL IM and Novozym 435 afforded FAME yields nearing 99%.
KW - Biodiesel
KW - Downstream processing
KW - Lipase
KW - Waste cooking oil
UR - http://www.scopus.com/inward/record.url?scp=79952315185&partnerID=8YFLogxK
U2 - 10.1016/j.supflu.2010.10.031
DO - 10.1016/j.supflu.2010.10.031
M3 - Article
AN - SCOPUS:79952315185
SN - 0896-8446
VL - 56
SP - 259
EP - 264
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
IS - 3
T2 - 2nd Iberoamerican Conference on Supercritical Fluids (PROSCIBA)
Y2 - 5 April 2010 through 9 April 2010
ER -