Optimizing Bioethanol Production for High Octane Bioethanol-Gasoline Blended Fuel through Fermentation

Year 2023, Volume: 10 Issue: 2, 475 - 486, 31.05.2023

Sabreen Saleh , Ahmed Al-azzawi

Abstract

The present study is to investigate the potential bioethanol production from seasonal fruit wastes as a possible substrate via biochemical fermentation. It is worth mentioning that the waste feedstock was subjected to a pretreatment process before the fermentation process. The fermentation was carried out using cost-effective dry yeast such as Saccharomyces cerevisiae for 5 to 8 days. The main target of this research is to determine bioethanol percentage from fruit wastes that produced through optimization of the bioconversion process. Besides, the selected fruit wastes were evaluated and analyzed for variations in key parameters, which include sugar content, pH value, temperature, alcohol concentrations, and yield during yeast fermentation reaction at 32 °C for the production of alcohol. The present work exhibits a promising approach for bioethanol production on a large scale from inexpensive organic wastes and yeast. Moreover, the bioethanol obtained was blended with pure gasoline to produce ethanol-gasoline blended fuel in various proportions of 0%, 5%, 10%, and 15%. The resulting alternative fuel characteristics were assessed experimentally using American Society for Testing and Materials (ASTM) standards. The bioethanol-gasoline blends including Ried vapor pressure (RVP), density, and Research Octane Number (RON) was determined according to ASTM standard methods. Overall, the results showed that the RON of gasoline was enhanced remarkably with the increase in ethanol ratio.

Keywords

Bioethanol, fermentation, Saccharomyces cerevisiae, Research octane number (RON)

Thanks

We gratefully acknowledge Mosul Uniersity-Iraq for its support of this work. The present study was performed in the research center of the chemistry department at Education College for Pure Science. Furthermore, Gasoline blended samples were sent to the petroleum quality control laboratory: Baiji refinery in Iraq, to characterize and analyze their properties.

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