OTHER RAW MATERIALS FOR PRODUCING ETHANOL

Leal, Manoel Regis Lima Verde ; Valle, Teresa Losada ; Feltan, José Carlos ; Carvalho, Cássia Regina Limonta

Resumo:

Ethanol may be produced from a wide variety of raw materials, both fossil and renewable. Current commercial fossil sources for ethanol are natural gas, petroleum, and coal, which will not be discussed here. Most of the ethanol is produced from renewable raw materials, which are essentially sources of carbohydrates as sugars (sugarcane, beet, sweet sorghum, Jerusalem artichoke, fruits), starch (corn, wheat, cassava, sweet potato), and lignocellulosic materials. Ethanol production technologies from materials rich in sugars or starches (these are sugar polymers) are called first generation, while ethanol and other biofuels production processes from lignocellulosic materials are named second generation. While first generation technologies are in an advanced degree of commercial maturity, the second generation will still require several years, maybe decades, to become competitive. However, the expectation is that when this happens, they will supersede and replace the first generation processes, for using abundant, varied and cheaper raw materials than those used now. It is important to mention that this expectation is not certain and there is a chance for both technologies to coexist and get pooled together, rendering the production of renewable ethanol even more competitive in comparison to fuels derived from petroleum.

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DOI: 10.5151/9788521208228-SUGARCANEBIOETHANOL_47

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Como citar:

LEAL, Manoel Regis Lima Verde; VALLE, Teresa Losada; FELTAN, José Carlos; CARVALHO, Cássia Regina Limonta; "OTHER RAW MATERIALS FOR PRODUCING ETHANOL", p. 519-540. Sugarcane bioethanol — R&D for Productivity and Sustainability. São Paulo: Blucher, None.
ISBN: 9788521208228, DOI 10.5151/9788521208228-SUGARCANEBIOETHANOL_47