Synthesis and Physicochemical Characterization of Biodiesel from Jatropha Curcas Seed Oil Collected in the Railway Quarters Bauchi

This study investigated the synthesis of biodiesel from Jatropha curcas seeds using methanol as an esterification agent. The process commenced with the extraction of oil from the seeds through solvent extraction, followed by a comprehensive analysis of the oil’s physicochemical properties to evaluate its suitability for biodiesel production. The extracted oil exhibited favorable properties, including a saponification value of ۱۸۷.۱۴ mg KOH/g oil NaOH, an acid value of ۱.۰۰ mg/L, a peroxide value of ۶.۶۰۰ mg/g, free fatty acid content of ۰.۹۹۰ mg/g, an iodine value of ۵۷.۱۴۷ mg/g, specific gravity (dimensionless, relative to water at ۲۵ °C) (dimensionless, relative to water at ۲۵ °C) of ۰.۸۰۲, and a density of ۰.۹۱۱ g/cm³. Its liquid state at ۲۵ °C further supports its potential as a viable feedstock. Biodiesel was subsequently synthesized via a catalyzed transesterification reaction and subjected to a quality assessment. The resulting biodiesel displayed a pH of ۵.۵۰, a cloud point of ۲ °C, a pour point of -۲ °C, and a flash point of ۱۴۷ °C. Additional measured properties include a density of ۰.۹۱۱ g/cm³, specific gravity (dimensionless, relative to water at ۲۵ °C) (dimensionless, relative to water at ۲۵ °C) of ۰.۸۰۲, a saponification value of ۱۸۷.۱۴ mg KOH/g oil, a peroxide value of ۵۳.۱ mg/g NaOH, an acid value of ۲.۳۸ mg/L, free fatty acid content of ۱.۱۹ mg/g, and an iodine value of ۵۴.۲۴۷. The close alignment of these values with established biodiesel standards confirms that Jatropha curcas seed oil is a suitable and commercially viable raw material for biodiesel production.

کلیدواژه ها:

Biodiesel ، Jatropha curcas ، Synthesis ، Transesterification