Feasibility of ethanol production from cyanobacteria, Anabaena species and cyanobacteria species extracted from soil

Honarmand, Ebrahem; Javadi Tadayyon, Samaneh; Yosef Zadi, Morteza

doi:10.22034/jpr.2025.8558.3386

Feasibility of ethanol production from cyanobacteria, Anabaena species and cyanobacteria species extracted from soil

Articles in Press

Document Type : Research Paper

Authors

Ebrahem Honarmand ¹

samaneh javadi tadayyon ²

morteza yosef zadi ²

¹ Associate Professor-Qom University-Faculty of Basic Sciences-Qom-Iran

² قم.بلوار الغدیر.دانشگاه قم

10.22034/jpr.2025.8558.3386

Abstract

In this study, the feasibility of bioethanol production from the cyanobacterial species Anabaena and a native species extracted from soil was investigated. The main objective was to investigate ethanol production from these biological sources in laboratory conditions. The research process included cyanobacterial cultivation, physical pretreatment, acid hydrolysis with different concentrations of sulfuric acid, and anaerobic fermentation with the yeast Saccharomyces cerevisiae. Based on the results obtained, ethanol was produced in both samples, with the highest ethanol concentration being 5.2% for the Anabaena species and 3.4% for the soil species. This maximum production was observed under optimal conditions including 5% sulfuric acid concentration, 105 min hydrolysis time, and 5 g yeast. The findings indicate that the use of cyanobacteria can be considered as a suitable biomass source for third-generation ethanol production. Given the limited number of similar studies in Iran, this research is a preliminary step towards identifying domestic potential and developing cyanobacteria-based processes for biofuel production.

Keywords

Production of ethanol

bioethanol

third generation ethanol

cyanobacteria

Subjects