THE STUDY OF BIODIESEL PRODUCTION FROM COTTON SEED OIL: MODELLING AND OPTIMIZATION.

AUTHOR: EMEMBOLU, NWANNEKA LOVET

DEPARTMENT: CHEMICAL ENGINEERING

AFFILIATION: NNAMDI AZIKIWE UNIVERSITY, AWKA

In this research work, refined cotton seed oil with Acid value of 0.22mg/KOH/g corresponding to FFA of 0.11% was used to produce biodiesel by alkaline catalyzed trans esterification process. After characterization the Acid value of the biodiesel was 0.24mgKOH/g which corresponds to FFA of 0.12%. The effect of process parameters (catalyst weight, methanol oil molar ratio, temperature and reaction time) were examined. The optimum catalyst weight was 0.6% with methanol oil molar ratio of 6:1v/v, reaction time of 60miuntes and reaction temperature at 600C which satisfies transesterification using alkaline catalyst. At this optimum, the conversion to biodiesel reached above 94%. The properties of the biodiesel such as flash point, pour point and cloud point was studied. Response surface methodology (RSM) was used to optimize the conditions for maximum production of biodiesel. The kinetics of the cotton seed oil methanolysis process using KOH as catalyst was studied at different reaction conditions. The reaction model consists of pseudo second order with no mass transfer limitations. The variation of density and kinematic viscosity as a function of biodiesel fraction and temperature respectively, were carried out for eleven biodiesel-diesel blends. Both density and viscosity increases as the concentration of biodiesel in the blend increase and both decreased as temperature increase. The empirical correlation proposed was fitted into the existing ones.

TO VIEW THE FULL CONTENT OF THIS DOCUMENT, PLEASE VISIT THE UNIZIK LIBRARY WEBSITE USING THIS LINK, http://naulibrary.org/dglibrary/admin/book_directory/Chemical_technology/11334.pdf

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