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1653587 
Journal Article 
Environmental impact of using biodiesel as fuel in transportation: a review 
Palit, S; Chowdhuri, AK; Mandal, BK 
2011 
Yes 
International Journal of Global Warming
ISSN: 1758-2083 
3 
3 
232-256 
WOS:000297639200002 
The environmental pollution and global warming associated with the use of fossil fuels, has forced a search for alternative fuels in transportation. This paper presents a review of the use of biodiesel in CI engines and its environmental impacts. There is a significant reduction in the emission of unburned hydrocarbons, polyaromatic hydrocarbons and soot, particulate matters, carbon monoxide, carbon dioxide and sulfur dioxide with biodiesel. Smoke opacity also decreases, but the NO(x) emission is more with biodiesel. It is evident from the study that biodiesel can only replace conventional diesel to some extent due to economic, social and other constraints. 
fuel; biodiesel; transesterification; CI engine; smoke opacity; pollutant emissions