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Well-to-wheels energy use and greenhouse gas emissions of ethanol from corn, sugarcane and cellulosic biomass for US use

Efficiency and Sustainability in Biofuel Production, 2012-12, Vol.7 (4), p.45905-13 [Peer Reviewed Journal]

2012 IOP Publishing Ltd ;2012. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 1748-9326 ;ISBN: 1771881313 ;ISBN: 9781771881319 ;EISSN: 1748-9326 ;EISBN: 9781498728867 ;EISBN: 1498728863 ;DOI: 10.1088/1748-9326/7/4/045905 ;OCLC: 908931915 ;CODEN: ERLNAL ;LCCallNum: TP339

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  • Title:
    Well-to-wheels energy use and greenhouse gas emissions of ethanol from corn, sugarcane and cellulosic biomass for US use
  • Author: Wang, Michael ; Han, Jeongwoo ; Dunn, Jennifer B ; Cai, Hao ; Elgowainy, Amgad
  • Subjects: Agricultural production ; Air pollution ; Alternative & renewable energy sources & technology ; Biodiesel fuels ; Biofuels ; Biomass ; cellulosic ethanol ; Corn ; corn ethanol ; Emissions ; Emissions control ; Energy ; energy balance ; Energy consumption ; Energy use ; Ethanol ; Ethyl alcohol ; Gasoline ; Greenhouse effect ; greenhouse gas emissions ; Greenhouse gases ; Land use ; Life cycle assessment ; life-cycle analysis ; Panicum virgatum ; Petroleum ; Raw materials ; Sugarcane ; sugarcane ethanol ; Transportation industry ; Vegetables
  • Is Part Of: Efficiency and Sustainability in Biofuel Production, 2012-12, Vol.7 (4), p.45905-13
  • Description: Globally, bioethanol is the largest volume biofuel used in the transportation sector, with corn-based ethanol production occurring mostly in the US and sugarcane-based ethanol production occurring mostly in Brazil. Advances in technology and the resulting improved productivity in corn and sugarcane farming and ethanol conversion, together with biofuel policies, have contributed to the significant expansion of ethanol production in the past 20 years. These improvements have increased the energy and greenhouse gas (GHG) benefits of using bioethanol as opposed to using petroleum gasoline. This article presents results from our most recently updated simulations of energy use and GHG emissions that result from using bioethanol made from several feedstocks. The results were generated with the GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model. In particular, based on a consistent and systematic model platform, we estimate life-cycle energy consumption and GHG emissions from using ethanol produced from five feedstocks: corn, sugarcane, corn stover, switchgrass and miscanthus. We quantitatively address the impacts of a few critical factors that affect life-cycle GHG emissions from bioethanol. Even when the highly debated land use change GHG emissions are included, changing from corn to sugarcane and then to cellulosic biomass helps to significantly increase the reductions in energy use and GHG emissions from using bioethanol. Relative to petroleum gasoline, ethanol from corn, sugarcane, corn stover, switchgrass and miscanthus can reduce life-cycle GHG emissions by 19-48%, 40-62%, 90-103%, 77-97% and 101-115%, respectively. Similar trends have been found with regard to fossil energy benefits for the five bioethanol pathways.
  • Publisher: Canada: IOP Publishing
  • Language: English
  • Identifier: ISSN: 1748-9326
    ISBN: 1771881313
    ISBN: 9781771881319
    EISSN: 1748-9326
    EISBN: 9781498728867
    EISBN: 1498728863
    DOI: 10.1088/1748-9326/7/4/045905
    OCLC: 908931915
    CODEN: ERLNAL
    LCCallNum: TP339
  • Source: IOP Publishing Free Content
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