Sargassum spp. process and fermentation to obtain additive (EtOH) for a fuel-saving device attached to vehicles

Abstract

To manage residues from various marine brown algae (Sargassum spp.) accumulated as environmental liabilities on Mexican beaches, the optimal conditions for bioethanol production were determined. For this purpose, primary fermentation was carried out using Saccharomyces spp., using the algae as a carbon source. Subsequently, a refining process was performed using a distiller designed to enhance bioalcohol yield. Finally, the applicability of the bioethanol in gasoline-powered vehicles was assessed through a vapor component mixing system coupled to the engine (FSD). Vehicle studies demonstrated 93% engine efficiency using the FSD and bioethanol. This indicates a 15-20% enhancement in efficiency under urban driving conditions. Furthermore, it was observed that efficiency improved (approximately 30%) on highways per liter of gasoline blended with 20% alcohol by volume (in gas phase), depending on engine conditions and other factors affecting the engine function, like altitude, road conditions, and upward mountain slopes.