Document Type
Conference Item
Publication Date
11-1-2013
Abstract
Biofuels especially biodiesel derived from renewable sources are becoming important increasingly due to environmental and energy concerns. Biodiesels are composed of long chain unsaturated fatty acid esters that are prone to oxidation. Non-edible high acid value calophyllum inophyllum oil based biodiesel (ClME) was produced by two stage esterification and one stage transesterification process. The oxidation stability of biodiesel treated with three prominent antioxidants namely Pyrogallol (PY), Propyl gallate (PG), and Tertbutylhydroxyquinone (TBHQ) was evaluated. The induction period ofbiodiesel with or without antioxidant was measured according to EN141l2 standard using a Rancimat instrument. Antioxidants were added at 500 ppm, which in general improved the induction period. Samples were kept for 70 days and different properties that change during storage namely induction period, density and kinematic viscosity were monitored. For all samples oxidation stability decreased and kinematic viscosity increased due to formation of oxidation products. PY showed the best effect in retaining oxidation stability of calophyllum inophyllum biodiesel.
Keywords
Biofuels, Antioxidants, Viscosity, Acid, Propyl gallate (PG), Oxidation
Divisions
fac_eng
Event Title
1st International Conference on the Science & Engineering of Materials
Event Location
Sunway Putra Hotel, Kuala Lumpur, Malaysia
Event Dates
13-14 November 2013
Event Type
conference