Abstract
Production of sugar cane in Brazil is 222 million tonnes (harvested wet weight)/year and is processed to sugar (7.5 million tonnes) and ethanol (11.8 million m3) in 1990. The use of fossil fuels in sugar cane production is 271 MJ/t of cane. Sugar cane bagasse and ethanol substitute for fuel oil in the food and chemical industry (including sugar production) and for gasoline (9.75 million m3/year), thus avoiding CO 2 emissions from fossil fuels. Considering the fast carbon cycling in sugar cane production and use, net emissions of 9.45 million tonnes of C/year are avoided; this corresponds roughly to 18% of the total CO 2 emissions from fossil fuels in Brazil.
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