Navigation Links
Challenges for biofuels: New life cycle assessment report from Energy Biosciences Institute
Date:2/9/2011

A combination of rising costs, shrinking supplies, and concerns about global climate change are spurring the development of alternatives to the burning of fossil fuels to meet our transportation energy needs. Scientific studies have shown the most promising of possible alternatives to be liquid fuels derived from cellulosic biomass. These advanced new biofuels have the potential to be clean-burning, carbon-neutral and renewable. Some could also be delivered through existing pipelines and used in today's engines, replacing gasoline on a gallon-for-gallon basis with no loss of performance.

That is the promise of advanced biofuels and the focus to date has been on the technological challenges of producing high quality biofuels in a way that is both sustainable and economically competitive with gasoline. In addition to the technological challenges, however, there are also important social, economic and environmental challenges that must be addressed.

"These challenges include constraints imposed by economics and markets, resource limitations, health risks, climate forcing, nutrient cycle disruption, water demand, and land use," says Thomas McKone, an expert on health risk assessments who holds a joint appointment with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) at Berkeley. "Responding to these challenges effectively requires a life-cycle perspective."

McKone is the lead author of a report titled "Grand Challenges for Life-Cycle Assessment of Biofuels," which was funded by a grant from the Energy Biosciences Institute (EBI), a partnership between UC Berkeley, Berkeley Lab, the University of Illinois, and the BP energy corporation. This report summarizes seven grand challenges that "must be confronted" to enable life-cycle assessments that effectively evaluate the environmental footprint of biofuel alternatives.

Co-authoring this EBI report with McKone were William Nazaroff, Peter Berck, Maximilian Auffhammer, Tim Lipman, Margaret Torn, Eric Masanet, Agnes Lobscheid, Nicholas Santero, Umakant Mishra, Audrey Barrett, Matt Bomberg, Kevin Fingerman, Corinne Scown, Bret Strogen and Arpad Horvath. McKone and Horvath are the co-leaders of EBI's Life-Cycle Assessment Program.

A life-cycle assessment (LCA) is typically used to evaluate the potential impact of a product or activity on human health and the environment over the entire cradle-to-grave life cycle of that product or activity. In applying the LCA approach to advanced biofuels, McKone, Horvath and their co-authors identified the following seven grand challenges.

  • Understanding farmers, feedstock options, and land use Biomass production for biofuels could displace existing products from land currently used for food, forage and fiber, which could increase the price of these goods in global markets. It could also induce deforestation that would exacerbate global climate change.

  • Predicting biofuel production technologies and practices - Many options exist for biofuel production processes and final products. Much of the variability among LCA results for biofuels arises from lack of knowledge about how these different possible production and operation processes will evolve.

  • Characterizing tailpipe emissions and their health consequences - Credible and reliable impact estimates for biofuel combustion are needed, but few studies of the health impacts from transportation fuel use have extended beyond air pollutants. Those that included an explicit metric for health damages emphasized mortality rather than morbidity and the overall disease burden.

  • Incorporating spatial heterogeneity in inventories and assessments - The health consequences of pollutant emissions vary depending upon where the pollutant is released, with factors such as proximity to large populations looming large. Geographical variability also influences other factors, including soil carbon impacts and water demand consequences.

  • Accounting for time in impact assessments - Air emission impacts from tailpipes and production facilities accrue within years and can be allocated to the year of emissions without discounting. GHG emission impacts are distributed over decades and even centuries using integrated assessment models, and are often discounted. Decisions about discounting can strongly influence the outcome of impact assessments, yet there is not a clear rational basis for making these decisions.

  • Assessing transitions as well as end states - In addressing transitions, emerging technologies could profoundly change the assumptions that underlie biofuel LCAs. For example, changes in protein production and consumption patterns or in urban land-use policies could open up substantial agricultural land for biofuel production, an action that would fundamentally change a biofuel LCA.

  • Confronting uncertainty and variability - Addressing uncertainty is among the greatest of LCA challenges, not only for biofuels, but for other LCA efforts as well. To confront uncertainty and variability, the "doable" and "knowable" must be separated from assumptions that are conditional components of the LCA.

In their report, the authors of the EBI study say that confronting these seven grand challenges for a biofuels LCA requires a good balance between the needs of technology momentum and adaptive decision making, something, they say, that has not always been well-articulated among practitioners of LCA.

"We must recognize that LCA is not a product but an ongoing process for organizing information and prioritizing information needs," McKone says. "LCAs should be viewed as tools for building scenarios from which one can learn, rather than truth-generating-machines. We do not see the grand challenges outlined in this report as hurdles to be cleared, but rather as opportunities for the practitioner to focus attention on making LCA more useful to decision makers."


'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Related biology news :

1. Barcelona Declaration 2008: Challenges and Pathways to Earth Sustainability
2. Research challenges conventional notions about salmon survival
3. Siblings of mentally disabled face own lifelong challenges, according to researchers
4. First-ever socioeconomic study on coral reefs points to challenges of coastal resource management
5. Experts discuss challenges in integrative approaches to science
6. Y chromosome and surname study challenges infidelity myth
7. Climate change: Global risks, challenges and decisions
8. Major international study challenges notions of how genes are controlled in mammals
9. SRI International receives $100,000 Grand Challenges Explorations grant
10. The challenges of avian influenza virus: Mechanism, epidemiology and control
11. 2000-year-old statue of an athlete sheds light on corrosion and other modern challenges
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Challenges for biofuels: New life cycle assessment report from Energy Biosciences Institute
(Date:6/22/2016)... , June 22, 2016   Acuant ... and verification solutions, has partnered with RightCrowd ... solutions for Visitor Management, Self-Service Kiosks and ... products that add functional enhancements to existing ... corporations and venues with an automated ID ...
(Date:6/16/2016)... 16, 2016 The global ... to reach USD 1.83 billion by 2024, according ... Inc. Technological proliferation and increasing demand in commercial ... to drive the market growth.      ... The development of advanced multimodal techniques for biometric ...
(Date:6/7/2016)...  Syngrafii Inc. and San Antonio Credit Union ... integrating Syngrafii,s patented LongPen™ eSignature "Wet" solution into ... result in greater convenience for SACU members and ... existing document workflow and compliance requirements. ... Highlights: ...
Breaking Biology News(10 mins):
(Date:6/23/2016)...  Blueprint Bio, a company dedicated to identifying, protecting ... has closed its Series A funding round, according to ... "We have received a commitment from Forentis Fund that ... meet our current goals," stated Matthew Nunez . ... complete validation on the current projects in our pipeline, ...
(Date:6/23/2016)... 2016 On Wednesday, June 22, 2016, ... 0.22%; the Dow Jones Industrial Average edged 0.27% lower to ... down 0.17%. Stock-Callers.com has initiated coverage on the following equities: ... (NASDAQ: NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ... BIND ). Learn more about these stocks by accessing their ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... quality, regulatory and technical consulting, provides a free webinar on Performing ... July 13, 2016 at 12pm CT at no charge. , Incomplete investigations are ...
(Date:6/23/2016)... June 22, 2016  Amgen (NASDAQ: AMGN ... QB3@953 life sciences incubator to accelerate the ... shared laboratory space at QB3@953 was created to help ... obstacle for many early stage organizations - access to ... sponsorship, Amgen launched two "Amgen Golden Ticket" awards, providing ...
Breaking Biology Technology: