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Trends in Mechanical Engineering & Technology

Enhancing Combustion Efficiency and Emission Reduction in Single Cylinder CI Engines: A Study on Waste Dairy Scum Methyl Ester Biodiesel Blends with Aluminium Oxide Nanoparticles

  1. Veeranna Modi
  2. Prasad B. Rampure

Abstract

In response to the urgent need for sustainable energy solutions and environmental considerations, this study explored the utilization of waste dairy scum methyl ester biodiesel blended with diesel and enhanced with Al2O3 nanoparticles as an additive. The biodiesel was prepared by blending waste dairy scum methyl ester with diesel and incorporating 100 ppm Al2O3 nanoparticles. Experimental tests were conducted on a single-cylinder diesel engine, comparing neat diesel, B30 biodiesel blends (with and without Al2O3 nanoparticles), and B30+ Al2O3. At peak load conditions, B30+ Al2O3 exhibited the lowest brake-specific fuel consumption (BSFC) compared to neat diesel and B30 biodiesel. Furthermore, the brake thermal efficiency (BTE) with B30+ Al2O3 was 2.31% higher than that of diesel and 2.06% higher than B30. Carbon monoxide (CO) emissions were reduced by 16.66% with B30 and B30+Al2O3 compared to diesel. Additionally, carbon dioxide (CO2) emissions decreased with the use of Al2O3 nanoparticles, showing a reduction of 4.27% compared to diesel and 2% compared to B30. Hydrocarbon (HC) emissions were also lowered by 7.69% with B30 and 13.46% with B30+ Al2O3. Overall, the addition of nanoparticles contributed to improved performance and reduced emissions when compared to B30 biodiesel blend and neat diesel. This research effectively addresses both energy and environmental challenges.

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