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An assessment of fuel consumption and carbondioxide emissions from generator; a comparative study of jatropha biodiesel and liquefied petroleum diesel

Author Affiliations

  • 1Department of Agricultural and Environmental Engineering, Joseph Sanwuan Tarka University, Makurdi, Nigeria

Int. Res. J. Environment Sci., Volume 14, Issue (2), Pages 1-6, April,22 (2025)

Abstract

This study comparatively analyzed carbon dioxide emission by jatropha biodiesel and liquefied petroleum diesel when used as generator fuels. 24kg of Jatropha seeds were synthesized into 4 liters (3750g) of Jatropha oil by mechanical extraction and further synthesizes into1181.95 g of Ethanol, and blended with Potassium hydroxide (52g) to produce3 liters of Biodiesel and989.5g of Glycerol by trans-esterification. The biodiesel and fossil diesel were fed into an 8kw diesel generator at no load. The consumption rate were in 0.59:0.60 and 0.72:0.74 litres at 30 minute and. 1 hr respectively; an increase of 0.13 in biodiesel and 0.14 in fossil diesel per every 30 minutes and bringing the total to 1.31 litre and 1.34 litre respectively at end of 1 hour.. The consumption rate was higher by 2% in fossil diesel when compared with jatropha biodiesel. The CO2 emissions were recorded every 5 minutes interval for an hour. The emission for bio-diesel ranged from 0.12 to 0.42 with a total of 3.45 while that of fossil diesel ranged from 0.44 to 0.72 with a total of 7.95. The mean standard deviation for both bio-diesel and diesel were 0.250 and 0.373 respectively. There were strong positive correlation between periods of consumptions with Bio-diesel (0.940653) and Diesel (0.817254).Also bio-diesel has a strong positive correlation with Diesel (0.767233). The experiment has demonstrated that significant difference exist between CO2emissionfrom diesel and biodiesel. The CO2emitted was lower for Jatropha biodiesel but higher in petroleum diesel fuel; an attestation of higher oxygen content in biodiesel than diesel oil.

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