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Updated: Jun 20, 2026
14:53
Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol
Published on: October 24, 2016
Life cycle evaluation of emerging lignocellulosic ethanol conversion technologies.
Sabrina Spatari1, David M Bagley, Heather L MacLean
1Drexel University, Civil, Architectural, and Environmental Engineering, 3141 Chestnut Street, Philadelphia, PA 19104, USA. spatari@drexel.edu
Bioresource Technology
|September 19, 2009
Summary
Lignocellulosic ethanol offers a greener alternative for transportation fuels, reducing carbon intensity and petroleum demand. Future technologies show significant promise for lowering greenhouse gas emissions compared to current methods.
Area of Science:
- Biotechnology
- Environmental Science
- Chemical Engineering
Background:
- Personal transportation significantly contributes to climate change and energy security concerns.
- Lignocellulosic ethanol presents a viable alternative to conventional gasoline, offering reduced carbon intensity and petroleum dependence.
Purpose of the Study:
- To compare the technological features and life cycle environmental impacts of near- and mid-term lignocellulosic ethanol bioconversion technologies in the U.S.
- To evaluate key uncertainties in pre-treatment, hydrolysis, and fermentation processes.
- To assess the potential for reducing fossil energy use and greenhouse gas (GHG) emissions.
Main Methods:
- Comparative analysis of different ethanol bioconversion pathways.
- Life cycle assessment (LCA) of environmental impacts.
- Evaluation of technological uncertainties in key bioconversion steps.
Main Results:
- All studied lignocellulosic ethanol options are significantly more environmentally attractive than gasoline.
- Anticipated future performance of bioconversion technologies surpasses current published achievements.
- Electricity co-product credits play a crucial role in determining the GHG impacts of ethanol production.
Conclusions:
- Optimizing ethanol facilities for ethanol production is vital for reducing the transportation sector's carbon intensity and enhancing energy security, especially in the absence of immediate alternatives to gasoline.
- Lignocellulosic ethanol technologies demonstrate considerable potential for mitigating climate change and improving energy security.
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