Ethanol production using corn, switchgrass, and wood; Biodiesel production using soybean and sunflower

被引：6

作者：

Pimentel D. ^{[1
]}

Patzek T.W. ^{[2
]}

机构：

[1] College of Agriculture and Life Sciences, Cornell University, Ithaca

[2] Department of Civil and Environmental Engineering, University of California, Berkeley

来源：

Natural Resources Research | 2005年 / 14卷 / 1期

基金：

欧盟地平线“2020”;

关键词：

Biodiesel; Biomass; Energy; Ethanol; Fuel; Natural resources;

D O I：

10.1007/s11053-005-4679-8

中图分类号：

学科分类号：

摘要：

Energy outputs from ethanol produced using corn, switchgrass, and wood biomass were each less than the respective fossil energy inputs. The same was true for producing biodiesel using soybeans and sunflower, however, the energy cost for producing soybean biodiesel was only slightly negative compared with ethanol production. Findings in terms of energy outputs compared with the energy inputs were: • Ethanol production using corn grain required 29% more fossil energy than the ethanol fuel produced. • Ethanol production using switchgrass required 50% more fossil energy than the ethanol fuel produced. • Ethanol production using wood biomass required 57% more fossil energy than the ethanol fuel produced. • Biodiesel production using soybean required 27% more fossil energy than the biodiesel fuel produced (Note, the energy yield from soy oil per hectare is far lower than the ethanol yield from corn). • Biodiesel production using sunflower required 118% more fossil energy than the biodiesel fuel produced. © 2005 International Association for Mathematical Geology.

引用

页码：65 / 76

页数：11

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