Biodiesel synthesis from Calophyllum inophyllum oil with different supercritical fluids

[Display omitted] •FAMEs were synthesized from surahonne oil using four different supercritical fluids.•Kinetic study for all the reactions was performed by varying time and temperature.•Rate constants and activation energies of the reactions were obtained and discussed. Biodiesel or fatty acid meth...

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Bibliographic Details
Published in:Bioresource technology 2017-10, Vol.241, p.767-774
Main Authors: Lamba, Neha, Gupta, Kaveri, Modak, Jayant M., Madras, Giridhar
Format: Article
Language:English
Subjects:
Biofuels
Calophyllum
Catalysis
Esterification
Kinetics
Methanol
Methyl Ethers
Methylating agents
Non-catalytic
Plant Oils
Supercritical fluids
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Summary:[Display omitted] •FAMEs were synthesized from surahonne oil using four different supercritical fluids.•Kinetic study for all the reactions was performed by varying time and temperature.•Rate constants and activation energies of the reactions were obtained and discussed. Biodiesel or fatty acid methyl esters (FAMEs) is primarily synthesized using edible vegetable oils and methanol with a catalyst. However, in the present study, FAMEs were synthesized from a non-edible oil (Calophyllum inophyllum also called as sura honne, Punnagam, Alexandrian Laurel) in different supercritical fluids: methanol (MeOH), methyl tert-butyl ether (MTBE), methyl acetate (MeOAc) and dimethyl carbonate (DMC) non-catalytically. Reactions were performed from 523K to 673K at 30MPa with a molar ratio of 40:1 with times varying from 3min to 3h. Conversions higher than 80% were obtained within 30min for oil reaction with MeOH and DMC at 623K and conversions of 60% and 70% were obtained at 673K with MeOAc and MTBE, respectively. Pseudo first order kinetics was used to obtain the rate constants and the activation energies followed the order: EMeOH
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2017.06.027