Biodiesel production from high free fatty acid byproduct of bioethanol production process

Abstract Biodiesel is a reliable and promising replacement of fossil diesel. It stable, less toxic can be produced from sustainable resources, including variety raw materials. Currently, the most widely used are vegetable oils (edible nonedible), due to their availability. The present paper considers potential obtaining fatty acid ethyl esters (FAEE) corn oil, which byproduct bioethanol production process. ultimate outcome would definitely increase profitability initial biodiesel process was implemented in two steps, high content free acids obtained oil. first step includes an acid-catalyzed esterification second comprises alkali-catalyzed transesterification receive FAEE. Two different catalysts (sulfuric p-toluene sulfonic acid) were utilized compared each other process, order cope with number material. A comprehensive qualitative quantitative analysis both feedstock performed using gas chromatography-mass spectrometry method. characterized by significantly lower cloud point number.