Navigation Links
Rice University researchers ask if biofuels will lead to a 'drink or drive'
Date:6/15/2009

Rice University scientists warned that the United States must be careful that the new emphasis on developing biofuels as an alternative to imported oil takes into account potential damage to the nation's water resources.

"The ongoing, rapid growth in biofuels production could have far-reaching environmental and economic repercussions, and it will likely highlight the interdependence and growing tension between energy and water security," said a report titled "The Water Footprint of Biofuels: A Drink or Drive Issue?"

The report, written by Pedro Alvarez, the George R. Brown Professor of Civil and Environmental Engineering, and three colleagues was funded by Rice University's Shell Center for Sustainability.

The researchers asked if increased biofuel-driven agriculture will affect water-resource availability and degrade water quality. They pointed out that fuel crops require large quantities of water and that water pollution is exacerbated by agricultural drainage containing fertilizers, pesticides and sediment. "These potential drawbacks," which the authors labeled the "water footprint," must be "balanced by biofuels' significant potential to ease dependence on foreign oil and improve trade balance while mitigating air pollution and reducing fossil carbon emissions to the atmosphere."

The report analyzed the amount of water needed to grow particular crops used to produce biofuels and noted that certain crops yield more biofuel energy while using less land, fertilizer and water. "Thus, from a water supply perspective," the authors said, "the ideal fuel crops would be drought-tolerant, high-yield plants grown on little irrigation water."

To demonstrate their point, the authors estimated it takes about 50 gallons of water to produce enough irrigated-corn ethanol in Nebraska to fuel an average car for one mile. Given differing land use practices and other factors, that number decreases to 23 gallons for Iowa-grown corn and rises to 115 gallons for Texas-grown sorghum.

The debate over biofuels must also "recognize the impact of increased agricultural activity on water quality as well as water consumption," the authors said. Raising biofuel crops in some areas will require greater use of fertilizers, with the runoff affecting local aquifers and even coastal regions like the Chesapeake Bay and the Gulf of Mexico, it warned.

The report acknowledged that some biofuel sources, like switchgrass and other lignocellulosic options, can "deliver more potential biofuel energy with lower requirements for agricultural land, agrichemicals and water." Accordingly, the authors urged that crops be chosen based on their appropriateness to the local climate and that producers raise crops that can be sustained by rainfall rather than irrigation.

The report called on policymakers to evaluate the water footprint as they devise an environmentally sustainable biofuels program. "Through energy conservation and careful planning that includes adoption of agricultural practices and crop choices that reduce water consumption and mitigate water pollution from agrichemicals, and identification of the local and regional water resources that will be needed to meet the biofuel mandate," the authors said, "we can have our drive and drink our water too."


'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Related biology news :

1. A study by the MUHC and McGill University opens a new door to understanding cancer
2. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
3. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
4. Bioengineers at University of Pennsylvania devise nanoscale system to measure cellular forces
5. Binghamton University researchers investigate evolving malaria resistance
6. Antioxidant to retard wrinkles discovered by Hebrew University researcher
7. Society for General Microbiology 161st Meeting, University of Edinburgh
8. Boston University biomedical engineers find chink in bacterias armor
9. KAUST and American University in Cairo to collaborate on research and academic development
10. UNH becomes first university in nation to use landfill gas as primary energy source
11. University of Minnesota study refutes belief that black men have more aggressive prostate cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2017)... The Controller General of Immigration from Maldives Mr. Mohamed Anwar ... prestigious international IAIR Award for the most innovative high security ePassport and ... ... Maldives Immigration Controller General, Mr. Mohamed ... the right) have received the IAIR award for the "Most innovative high ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based and Touchless), ... published by MarketsandMarkets, the market is expected to be worth USD 18.98 billion ... Continue Reading ... ...      (Logo: ...
(Date:3/22/2017)... VILNIUS, Lithuania , March 21, 2017 /PRNewswire/ ... identification and object recognition technologies, today announced the ... development kit (SDK), which provides improved facial recognition ... safety cameras on a single computer. The new ... algorithms to improve accuracy, and it utilizes a ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... genomics analysis platform specifically designed for life science researchers to analyze and ... researcher Rosalind Franklin, who made a major contribution to the discovery of ...
(Date:10/11/2017)... , ... October 11, 2017 , ... ... announced today it will be hosting a Webinar titled, “Pathology is going digital. ... Associates , on digital pathology adoption best practices and how Proscia improves lab ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... has granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and ... of osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular ...
(Date:10/10/2017)... International research firm Parks Associates announced today that Tom ... 2017 Annual Meeting , October 11 in Scottsdale, Arizona ... and how smart safety and security products impact the competitive landscape. ... Parks Associates: Smart Home Devices: Main Purchase Driver ... "The residential security market has experienced continued growth, and ...
Breaking Biology Technology: