Man, et al (2024) Biodiesel synthesis from waste coconut scum oil utilizing SnFe₂O₄/cigarette butt-derived biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More as a magnetic nanocatalyst: Optimization, kinetic and thermodynamic study. Chemical Engineering Research and Design. https://doi.org/10.1016/j.cherd.2024.08.033

A recent study published in Chemical Engineering Research and Design presents an innovative approach to biodiesel production using waste coconut scum oil (WCSO) and a novel magnetic nanocatalyst derived from cigarette butts. The catalyst, composed of SnFe2O4 and biochar, was synthesized using a sol-gel technique and optimized for transesterification—a key reaction in biodiesel production. The research found that this nanocatalyst achieved a high biodiesel yield of 98.67% under specific conditions, including a methanol-to-WCSO ratio of 11.81:1, a reaction temperature of 64.05°C, and an ultrasonic time of 34.25 minutes.

The catalyst exhibited impressive reusability, maintaining a 90.48% yield even after seven cycles. This durability, combined with its magnetic properties, makes the catalyst easy to recover and reuse. Kinetic and thermodynamic analyses confirmed that the biodiesel synthesis process was endothermic, and the reaction followed a quasi-first-order rate equation.

This research highlights the potential of using waste materials such as cigarette butts and coconut scum oil to produce biodiesel efficiently. The findings suggest that this magnetic nanocatalyst could be a viable option for sustainable fuel production, addressing both waste management and renewable energy needs. Future research may further refine the process and expand the application of this innovative technology.