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Synthesis of economically viable biodiesel from waste frying oils (WFO)
Author(s) -
Sharma Yogesh C.,
Agrawal Shweta,
Singh Bhaskar,
Frómeta Amado Enrique Navarro
Publication year - 2012
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.20666
Subject(s) - transesterification , biodiesel , methanol , raw material , biodiesel production , yield (engineering) , acid value , organic chemistry , chemistry , fatty acid methyl ester , reaction conditions , nuclear chemistry , catalysis , materials science , biochemistry , metallurgy
In present communication, waste frying oil (WFO) has been used as a feedstock for biodiesel synthesis. WFO, procured from a local Indian restaurant possessed an acid value of 0.84 mg KOH/g, which is low enough for single step transesterification reaction. Biodiesel (fatty acid methyl esters) was washed after transesterification reaction and the yield got lowered substantially (from 96% to 86.36%) after water washing owing to loss of esters. 30:100 vol% (methanol to oil), 0.6 wt% NaOCH 3 , 60°C temperature and 600 rpm agitation in 1 h reaction time was found to be optimum for transesterification reaction. 1 H NMR spectrum showed a high conversion (95.19%) of fatty acids in WFO to biodiesel in 2 h reaction time. Almost complete conversion (99.68%) was attained in 2 h reaction time. © 2011 Canadian Society for Chemical Engineering