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Optimization of Esterification and Transesterification of Karanja Oil for Production of Biodiesel

Ashlesa Mohapatra, R. Saiteja


In the present work, bio diesel was produced from Karanja oil through esterification followed by transesterification. Kinetic studies to optimize the preparation of karanja oil methyl ester (KOME) were carried out varying different parameters like methanol/oil molar ratio, % of excess alcohol, reaction time, temperature and concentration of acid catalyst. The outcomes show that 4% H2SO4, 0.33% v/v alcohol/oil ratio, 1hour reaction time and 65°C temperatures are the optimum situations for esterification. Optimum conditions for the production of biodiesel from karanja oil are 8% sodium methoxide, 0.33%v/v alcohol/oil ratio, 1hour reaction time, 65°C temperature. The various fuel properties of KOME were compared with ASTM and DIN standards. The fuel properties were found to be comparable with that of diesel fuel. Karanja tree is found in abundance in most parts of India and from its chemical composition it is found that the oil is almost similar to that of other non-edible oils. It is concluded that the karanja oil is also a potential raw material for biodiesel. The biodiesel (KOME) produced from karanja oil is cost effective and can be a viable alternative fuel in near future.

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