Nanoparticles Enhance Biodiesel Efficiency and Reduce Emissions

Strategic Insights -

Researchers at Saveetha Engineering College in Chennai, India, have made significant breakthroughs in the combustion, performance, and emissions of Madhuca oil-based biodiesel in diesel engines. By leveraging the addition of Titanium dioxide (TiO2) nanoparticles and hydrogen, the team was able to achieve substantial improvements in fuel efficiency and emissions reduction. The study, published in the International Journal of Hydrogen Energy, highlights the potential of Madhuca oil-based biodiesel as a sustainable alternative to conventional diesel.

Key Takeaways:

  • The M20 blend enhanced with 100 ppm TiO2 nanoparticles achieved a peak improvement in brake thermal efficiency (BTE) by 6.76 % and reduced brake-specific fuel consumption (BSFC) by 4.46 % compared to the M20 blend.
  • Emission analysis demonstrated significant reductions in hydrocarbon (HC) and carbon monoxide (CO) emissions, achieving decreases of 2.63 % and 8.53 %, respectively, with the same blend.
  • The inclusion of hydrogen as a secondary fuel with M20 and 100 ppm TiO2 showed 24.23 % improved BTE and 8.32 % reduced BSFC, along with significant emissions reductions: 13.16 % HC, 19.02 % CO, and 4.04 % smoke opacity.
  • Nitrogen oxide (NOx) emissions increased by 12.67 % due to elevated in-cylinder temperatures with the M20 blend.
  • The study offers valuable insights into achieving cleaner and more efficient combustion in diesel engines, contributing to the advancement of biofuel applications and emission compliance strategies.

Statistics:

  • 6.76 % improvement in brake thermal efficiency (BTE) with M20 blend enhanced with 100 ppm TiO2 nanoparticles.
  • 4.46 % reduction in brake-specific fuel consumption (BSFC) with the same blend.
  • 2.63 % decrease in hydrocarbon (HC) emissions.
  • 8.53 % decrease in carbon monoxide (CO) emissions.
  • 24.23 % improvement in BTE with hydrogen as a secondary fuel with M20 and 100 ppm TiO2.
  • 8.32 % reduction in BSFC with the same blend.
  • 13.16 % reduction in hydrocarbon (HC) emissions.
  • 19.02 % decrease in carbon monoxide (CO) emissions.
  • 4.04 % reduction in smoke opacity.

Sources:

  • Effect of Tio 2 Nanoparticles and Hydrogen On the Combustion, Performance, and Emissions of Madhuca Biodiesel In a Diesel Engine. International Journal of Hydrogen Energy, 2025;143:635-649.
  • Pergamon-elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England.
  • International Journal of Hydrogen Energy - www.journals.elsevier.com/international-journal-of-hydrogen-energy/
  • NewsRx. New Findings in Nanoparticles Described from Saveetha Engineering College (Effect of Tio 2 Nanoparticles and Hydrogen On the Combustion, Performance, and Emissions of Madhuca Biodiesel In a Diesel Engine). Biotech Week. July 16, 2025; p 247.