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Preparation and Characterization of Biodiesel from Karanja Oil by Using Silica Gel Reactor
* 1 , 1 , 1 , 1 , 1 , 2
1  Department of Chemical Engineering and Polymer Science, Shahjalal University of Science and Technology (SUST), Sylhet-3114, Bangladesh.
2  School of Engineering and Technology, Central Queensland University, Rockhampton, QLD 4702, Australia.

Abstract: The oil extraction and biodiesel preparation from Karanja oil have different available methods namely acid catalyzed trans-esterification, acid catalyzed two-step and three-step method etc. The available methods were studied for biodiesel preparation from Karanja oil. The biodiesel prepared by esterification reaction may contain some moisture which may causes to slowdown the reaction rate and affects on the quality of biodiesel by making emulsion.  The adsorption technique by using powder form of silica gal has been used in the reactor to improve the reaction rate. The data has been collected at the time of silica gal dosing and the amount of silica gel dosed for every reaction to optimize it. The optimum dosing condition were recorded by selecting the best dosing properties of biodiesel like specific gravity, free fatty acid (FFA) and viscosity etc. The properties of biodiesel namely specific gravity, viscosity, lower calorific value, cetane number, FFA, flash point, pour point, cloud point, iodine value and saponification value etc. have been carried out at optimum reaction condition by maintaining different ASTM standards and compared with the conventional diesel fuel and standard biodiesel.
Keywords: Karanja oil; Biodiesel; Silica gel; Esterification reaction; Free Fatty Acid.
Comments on this paper
Susan Krumdieck
Energy Return on Energy Invested
What would the EROI be on such biofuel?
Sukanta Kumar Mondal
The experimental EROI was about 1.3. But that's not limited to and it can be optimized to the higher as above 1.3.