Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Reexamination Certificate
2004-11-29
2009-06-23
Gonzalez, Porfirio Nazario (Department: 1621)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
C435S041000, C435S132000, C435S134000, C554S169000
Reexamination Certificate
active
07550278
ABSTRACT:
The present invention provides a new process for producing biodiesel from renewable oil under lipase catalysis in an organic medium reaction system. In this process, a short chain alcohol ROH is used as an acyl acceptor, a relatively hydrophilic organic solvent having no negative effect on the reactivity of lipase is used as the reaction medium, and a renewable oil raw material is catalyzed by a lipase to synthesize biodiesel through a transesterification reaction. In the process of the present invention, the renewable oil raw material can be almost completely converted into biodiesel and a byproduct glycerin, and the yield of the biodiesel is 94% or more. This new type organic medium reaction system promotes the solubility of the short chain alcohol in the renewable oil raw material, and dissolves part of the byproduct glycerin. Consequently, the reaction time is shortened, the productivity of biodiesel is increased and the reactivity and lifetime of the lipase is improved in the process of the present invention.
REFERENCES:
patent: 6398707 (2002-06-01), Wu et al.
patent: 10217607 (2002-10-01), None
patent: WO 03004591 (2003-01-01), None
patent: 11263750 (1999-09-01), None
patent: 2002-23393 (2002-08-01), None
patent: 2002233393 (2002-08-01), None
Soumanou, M.M. et al., Improvement in Lipase-catalyzed synthesis f fatty acid methyl esters from sunflower oil, Jul. 16, 2003, Enzyme and Microbial Technology, vol. 33, pp. 97-103.
JP 2002-233393, National Research Inst of Brewing, English translation, Aug. 20, 2002.
WO 03004591, Siegfried et al. , English translation, Jan. 16, 2003.
Nie K., Wang F., Tan T. “Biodiesel Production by Immobilized Lipase”;Modern Chemical Industry 23:9 (2003) pp. 35-38.
Shimada; Y.; Watanabe, Y.; Sugihara, A.; Tominaga, Y.; “Enzymatic alcoholysis for biodiesel fuel production and application of the reaction to oil processing”; Journal of Molecular Catalysis B: Enzymatic (2002) vol. 17, No. 32 pp. 133-142.
Nelson, L; Foglia, T. and Marmer, W. ;“Lipase-Catalysed Production of Biodiesel”; Journal of the American Oil Chemists' Society, AOCS Press, Champaign, IL; vol. 73, No. 9, Sep. 1, 1996; pp. 1191-1195; XP000626753, ISSN: 003-021X.
Iso, M., Chen, B., Eguchi, M., Kudo, T. and Shrestha, S.; “Production of biodiesel fuel from triglycerides and alcohol using immobilized lipase”; Journal of Molecular Catalysis B: Enzymatic, Elsevier, Amsterdam, NL, vol. 16, No. 1 Nov. 20, 2001, pp. 53-58, XP002417337; ISSN: 1381-1177.
Du Wei
Li Lilin
Liu Dehua
Cutliff Yate′ K
Gonzalez Porfirio Nazario
Gottlieb Rackman & Reisman P.C.
Tsinghua University
LandOfFree
Process for producing biodiesel from renewable oil under... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing biodiesel from renewable oil under..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing biodiesel from renewable oil under... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4068570