THERMAL SCIENCE

International Scientific Journal

Senthil Ramalingam

,

Mohan Govindasamy

,

Silambarasan Rajendran

THE INFLUENCE OF NATURAL AND SYNTHETIC ANTIOXIDANT ON OXIDATION STABILITY AND EMISSION OF SAPOTA OIL METHYL ESTER AS FUEL IN CI ENGINE

ABSTRACT
In this present study oxidation stability of sapota oil methyl ester with synthetic and natural antioxidant additives using Rancimat test is investigate. The performance and emission characteristics of the B20 blend of sapota oil methyl ester with different antioxidant additive are evaluated in a Diesel engine. The natural antioxidants namely citric acid, rosemary extract and leaf extract and synthetic antioxidants namely pyrogallol, propyl gallate and butylated hydroxylanisole are selected. Addition of all the antioxidant additive found to have improved the oxidation stability of the biodiesel to the required level. Pyrogallol is found to be the best among the synthetic antioxidant, while leaf extract is the best among the natural antioxidant. From the emission test it is found that B20 has better emission characters compared to diesel except NOx. Further the addition of leaf extract slightly reduces the NOx emission of B20 and appreciably suppresses smoke emission.
KEYWORDS
antioxidant additive, natural antioxidant, sapota biodiesel, diesel engine, emission, performance
PAPER SUBMITTED: 2015-09-24
PAPER REVISED: 2016-01-21
PAPER ACCEPTED: 2016-02-12
PUBLISHED ONLINE: 2016-11-13
DOI REFERENCE: https://doi.org/10.2298/TSCI16S4991R
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Supplement 4, PAGES [S991 - S997]
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The influence of natural and synthetic antioxidant on oxidation stability and emission of sapota oil methyl ester as fuel in CI engine

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence