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**18** 

*India* 

Amrit Goswami

**An Alternative Eco-Friendly** 

*Govt. of India), Jorhat-785006, Assam,* 

**Avenue for Castor Oil Biodiesel:** 

**Use of Solid Supported Acidic Salt Catalyst** 

*Chemical Science Block, CSIR- North-East Institute of Science & Technology, (A Constituent Establishment of Council of Scientific and Industrial Research,* 

Year back in 1885, when Rudolf Diesel first invented the diesel engine, it was intended to run it on oil from vegetative sources and in the course of time with gradual depletion of the fossil fuel has now become a mandate of the day. Because it will play an important part in sustainable fuel and energy production solution for the future. Vegetable oil which remains in the form of triglyceride(1) of long chain fatty acid with carbon chain C16-C18 is not fit to use directly but needs certain transformation such as pyrolysis, microemulsion formation,

R= Long Chain Fatty acid moiety

The transformed oil is termed as biodiesel due to its original biological source. Finite fossil fuel reserve, political, economic, biodegradability, low toxicity, health and environmental issues have led it to consider as the alternative and more importantly renewable and ecofriendly fuel. It has been found to show its ability to meet the world energy demand in transportation along with agricultural and other industrial sectors (Akoh et al. 2007). Since the source is plant, it is green as it does not have ash content, sulphur, aromatic ring compounds, renewable and so it has come out as superlative alternative and can be used in compression ignition engine with minor or no modification of the engine (Xu and Wu, 2005). A breakthrough in the process of converting vegetable oil into useful form promises a cheaper way to go green as it contributes mitigating global warming also. However the slow pace of progress in this direction in alternative fuel technologies has prevented the vision

**1. Introduction** 

transesterification etc. to suit it to use as diesel fuel

CH2OR

CHOR

CH2OR (1)

Triglyceride

