Journal
CURRENT OPINION IN BIOTECHNOLOGY
Volume 38, Issue -, Pages 63-70Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.copbio.2015.12.021
Keywords
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Funding
- Natural Science and Engineering Research Council of Canada
- BioFuelNet Network Centre of Excellence
- Center for Climate and Energy Decision Making (CEDM) [SES-0949710]
- Direct For Social, Behav & Economic Scie
- Divn Of Social and Economic Sciences [1463492] Funding Source: National Science Foundation
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Lignocellulosic ethanol has potential for lower life cycle greenhouse gas emissions compared to gasoline and conventional grain-based ethanol. Ethanol production 'pathways' need to meet economic and environmental goals. Numerous life cycle assessments of lignocellulosic ethanol have been published over the last 15 years, but gaps remain in understanding life cycle performance due to insufficient data, and model and methodological issues. We highlight key aspects of these issues, drawing on literature and a case study of corn stover ethanol. Challenges include the complexity of feedstock/ecosystems and market-mediated aspects and the short history of commercial lignocellulosic ethanol facilities, which collectively have led to uncertainty in GHG emissions estimates, and to debates on LCA methods and the role of uncertainty in decision making.
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