Impact of fuel additives on the performance, combustion and emission characteristics of diesel engine charged by waste plastic bio-diesel

Plastic waste in the environment has increased rapidly in recent years, amounting to nearly 4 million metric tons per annum globally. This waste comprises materials such as low-density polyethylene, high-density polyethylene, polyethylene terephthalate, polystyrene, and more. The current research focuses on the use of plastic waste as a biofuel for diesel engines. The properties of waste plastic oil blended fuels were calibrated to meet ASTM standards. Various blended mixtures of waste plastic biofuels were prepared and labelled as WPO10, WPO20, and WPO30. These mixtures were tested in a diesel engine under standard conditions. Based on the initial results, the optimized blend was further examined with fuel additives, such as the alcohol additive 1-butanol and alumina oxide nanoparticles, at lower concentrations. This was done to evaluate the engine's performance, combustion, and emission characteristics. The addition of 5 % 1-butanol reduced CO and HC emissions by 9 % and 18.6 %, respectively, compared to WPOME20. Similarly, the inclusion of 100 ppm of Al2O3 nanoparticles decreased CO and HC emissions by 12.5 % and 18.5 %, respectively, compared to WPOME20. Further, the application of RSM-ML approach, the various characteristics of diesel engine is optimized further the WPO20 operated with 1-Butanol and Al2O3 nanoparticles.