Can Brazil replace 5% of the 2025 gasoline world demand with ethanol?
Can Brazil replace 5% of the 2025 gasoline world demand with ethanol?
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DOI：
10.1016/j.energy.2008.11.001
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发表时间：
2009-05-01
期刊：
影响因子：
9
通讯作者：
Gaya Scandiffio, Mirna Ivonne
中科院分区：
文献类型：
--
作者：
de Cerqueira Leite, Rogerio Cezar;Lima Verde Leal, Manoel Regis;Gaya Scandiffio, Mirna Ivonne
石油使用量的增加，加上对全球变暖的担忧，要求开发和制定减少二氧化碳的、非化石燃料为基础的替代能源发电战略。乙醇是一种潜在的替代品，特别是当以可持续的方式生产时，就像巴西设想的甘蔗生产那样。我们考虑扩大甘蔗乙醇的使用，以取代2025年全球预计汽油使用量的5%。根据现有的技术，生产必要的乙醇需要2100万公顷的土地。这还不到目前巴西农业用地的7%，相当于目前大豆土地的使用量。新的生产用地来自通过改善养牛业牧场管理而获得的牧场。随着新甘蔗品种的不断推出(年产量增长约1.6%)和新的乙醇生产技术，即将甘蔗渣水解成糖以生产乙醇，以及收集甘蔗垃圾以提供可再生工艺能源生产，这可能会将这些适度的土地需求减少29%-38%。(C)2008爱思唯尔有限公司。保留所有权利。
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.