Investigating the impact of TiO2 nanoparticles on waste plastic pyrolysis oil and DEE diesel blends for diesel engine performance and emission optimisation
DOI:
https://doi.org/10.24425/ather.2025.156594Abstract
The growing environmental concerns and fossil fuel depletion have spurred interest in alternative fuels, with waste plastic oils emerging as a solution. Waste plastic oils not only help to reduce plastic waste but also contribute to energy production. This study investigates the effects of incorporating TiO2 nanoparticles into waste plastic pyrolysis oil (WPPO) and diethyl ether (DEE) blended with diesel fuel on engine working characteristics. The experimental analysis evaluated four fuel blends: pure diesel, WPD20 (20% WPPO in diesel), WPD20E5 (WPD20 with 5% DEE), WPD20E5T50 (WPD20E5 with 50 ppm TiO2 nanoparticles), and WPD20E5T100 (WPD20E5 with 100 ppm TiO2 nanoparticles) under various load conditions. The results demonstrated that the WPD20E5T100 blend achieved the highest brake thermal efficiency and the lowest brake specific fuel consumption, with improvements of up to 5.26% and 8.31%, respectively, in comparison to neat diesel. The blend also exhibited the most significant reductions in CO and unburnt hydrocarbon emissions, with reductions of up to 6.86% and 11.9%, respectively. Smoke emissions were notably lower with the TiO2 nanoparticle-enhanced blends, achieving an 11.8% improvement over diesel. Although NOx emissions were slightly higher with DEE, the WPD20E5T100 blend showed the maximum reduction in NOx emissions, with a reduction of 5.7% at full load. Overall, the WPD20E5T100 blend produced the optimum results at all loads.References
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