Beyond Fossil Fuels: Investigating Azolla Pinnata Microalgal Biodiesel for Enhanced Engine Performance, Combustion, and Emission Traits on Diesel Engine
摘要
Microalgae provide a sustainable and eco-friendly alternative to fossil fuels, making them a promising feedstock for biodiesel. This study investigates the performance, combustion, and emission characteristics of biodiesel derived from Azolla pinnata microalgal oil (APMB) using a trans-esterification process. APMB was blended with diethyl ether (DEE) in varying ratios (A30, A30 + 10% DEE, A30 + 20% DEE, A30 + 30% DEE) and tested in a single-cylinder diesel engine under variable loads (0–12 kg) at a fixed compression ratio of 19:1. The addition of DEE significantly improved brake thermal efficiency (up to 18.27%) and reduced brake specific energy consumption (up to 9.25%). A30 + 20% DEE exhibited superior performance, reducing CO, HC, and smoke opacity by 20%, 8.5%, and 6.29%, respectively, compared to conventional diesel. The findings demonstrate the potential of APMB with DEE additives as a viable alternative fuel with improved engine efficiency and reduced emissions.