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The trans-esterification of cottonseed oil using strong alkali catalyst and using multi walled carbon nano tubes as catalyst to produce biodiesel was studied. The interaction effects of various factors such as temperature, amount of alkali used, alcohol to oil ratio and reaction time on yield of biodiesel were studied. The maximum yield of 95% biodiesel was obtained. The biodiesel produced was characterized using FT-IR spectral analysis and GC–MS analysis to ascertain the various functional groups and compounds available in it. The properties of biodiesel using homogeneous alkali catalyst and heterogeneous multi walled carbon nanotubes such as calorific value (36.18MJ/kg, 33.78MJ/kg), flash point (160°C, 156°C) and other properties such as viscosity, cloud point, pour point and density were found to determine the quality of biodiesel produced. The studies were done by blending the biodiesel produced with diesel and properties of blended samples were estimated to ascertain the use of blended samples in internal combustion engines

egyptian journal of petroleum

Biodiesel synthesis from cottonseed oil using homogeneous alkali catalyst and using heterogeneous multi walled carbon nanotubes: Characterization and blending studies