Can Brazil replace 5% of the 2025 gasoline world demand with ethanol?

被引:108
作者
de Cerqueira Leite, Rogerio Cezar [1 ]
Lima Verde Leal, Manoel Regis [2 ]
Barbosa Cortez, Luis Augusto [1 ,3 ]
Griffin, W. Michael [4 ]
Gaya Scandiffio, Mirna Ivonne [1 ]
机构
[1] State Univ Campinas UNICAMP, Interdisciplinary Ctr Energy Planning NIPE, BR-13083970 Campinas, SP, Brazil
[2] Alternat Energies & Environm Ctr CENEA, BR-60160230 Fortaleza, Ceara, Brazil
[3] State Univ Campinas UNICAMP, Sch Agr Engn FEAGRI, BR-13083970 Campinas, SP, Brazil
[4] Carnegie Mellon Univ, Tepper Sch Business Engn & Publ Policy, Green Design Inst, Pittsburgh, PA 15213 USA
关键词
Fuel ethanol; Brazilian potential; Research and development; New technologies; Sugarcane; LIFE-CYCLE ASSESSMENT; GREENHOUSE-GAS; CROPPING SYSTEMS; ENERGY; BIOETHANOL; EMISSIONS; BIOFUELS;
D O I
10.1016/j.energy.2008.11.001
中图分类号
O414.1 [热力学];
学科分类号
摘要
Increasing use of petroleum, coupled with concern for global warming, demands the development and institution of CO2 reducing, non-fossil fuel-based alternative energy-generating strategies. Ethanol is a potential alternative, particularly when produced in a sustainable way as is envisioned for sugarcane in Brazil. We consider the expansion of sugarcane-derived ethanol to displace 5% of projected gasoline use worldwide in 2025. With existing technology, 21 million hectares of land will be required to produce the necessary ethanol. This is less than 7% of current Brazilian agricultural land and equivalent to current soybean land use. New production lands come from pasture made available through improving pasture management in the cattle industry. With the continued introduction of new cane varieties (annual yield increases of about 1.6%) and new ethanol production technologies, namely the hydrolysis of bagasse to sugars for ethanol production and sugarcane trash collection providing renewable process energy production, this could reduce these modest land requirements by 29-38%. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:655 / 661
页数:7
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