Waste Oil Biodiesel a Comparative Emission Analysis in Diesel Engine

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A. Mandal
R. Madan
M. Sharma
X.C. Chung
T. Singh
R.C. Sharma

Abstract

Recent years have seen a significant increase in the use of biodiesel as an alternative fuel, which offers several environmental advantages. Produced from sustainable resources like vegetable or animal fats, biodiesel is an alternative fuel for diesel engines. One significant challenge, though, is the high expenses associated with marketing biodiesel. In light of this, using Restaurant Fry Oils (RFO), which are readily available and reasonably priced, could result in a noticeable drop in the price of biodiesel. In this investigation, a blend of waste biodiesel fuels made from leftover restaurant fry oil was combined with regular diesel fuel to make up 40 % of the combination. Tests of the biodiesel blends were conducted using a four-stroke, single-cylinder, naturally aspirated diesel engine with variable engine speed and a 25 % load condition. Emission characteristics were noted and contrasted with clean diesel. It was noted that while CO2 emissions were reduced, CO2 for diesel fuel was 0.57 % vol. whereas, got restaurant oil was 0.52 % vol. at 1800 rpm under 25 % load condition for B40 blend. CO emissions were higher when diesel fuel was used. The amount of CO2 emissions drops as speed rises. NOx emission was higher than diesel. With the help of RFO it is possible to replace conventional fuel at the same time it being cost efficient. NOx emission was higher for B40 restaurant fry biodiesel. For diesel it was 256 ppm whereas for RFO blend was 403 ppm.

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