Production of Biodiesel from Brown Grease

Mirit Kolet, Department of Chemistry, Biotechnology and Materials Engineering, Ariel University, Ariel, israel
Daniel Zerbib, Department of Chemical Engineering, Biotechnology and Materials, Ariel University, Ariel, Israel
Faina Nakonechny, Department of Chemistry, Biotechnology And Materials Engineering, Ariel University, Ariel, Israel
Marina Nisnevitch, Department of Chemistry, Biotechnology And Materials Engineering, Ariel University, Ariel, Israel

Global climate changes dictate the need for alternative energy sources. The present study is dedicated to a development of scheme for biodiesel production from cooking oil waste - brown grease, which has high free fatty acid content. First, a protocol for separation of a fat layer from brown grease wastes was developed and second, conditions for effective esterification reaction by comparing heating and ultrasonic activation were worked out. At each experimental stage, samples were tested by HPLC to examine free fatty acids and biodiesel. Our results show that efficient separation of the fat layer from brown grease can be obtained by heating followed by centrifugation. Results show that biodiesel can be produced under ultrasonic activation instead of terminal activation. The combination of heating-based fat separation and ultrasonic activation of esterification can serve the basis for the development of an efficient biodiesel production in a continuous regime.nter the body of your abstract here


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