Enhancing Biodiesel-Methanol blends with 1-Butanol for stable and efficient fuels

Abstract

The quest for sustainable fuels has led to the exploration of biodiesel as an eco-friendly alternative to conventional fossil fuels. While biodiesel holds promise due to its renewable nature and lower emissions, challenges occur when blending it with methanol. This study addresses these issues by adding 1-butanol as a cosolvent in biodiesel-methanol blends, improving their stability and performance. Gas chromatography mass spectrometry identifies the dominant compound in biodiesel as 2,6-di-tert-butylphenol, known for its stability-enhancing properties. Adding alcohols to biodiesel aiming to reduce the ignition delay time in and shorten the combustion time in diesel engines. The scientific explanation regarding the role of 1-butanol in stabilizing the biodiesel-methanol blend has not yet been revealed. Methanol's tendency to form an unstable mixture due to water affinity is mitigated by 1-butanol, which raises the critical phase separation temperature, a key indicator of blend stability. The study validates that adding 1-butanol produces a stable, homogenous blend. 1-butanol's as a third fuel blend option is underscored by its higher energy content, lower volatility, and reduced hydrophilicity compared to ethanol and methanol, making it a valuable advantage for fuel development. Investigations into ignition delay and burning speed reveal their difference with blend compositions. In conclusion, 1-butanol appears as a promising solution for enhancing the efficiency and stability of biodiesel-methanol blends, contributing to the development of sustainable and eco-friendly fuels for a more responsible and energy-efficient future.