11 Apr 2012:
NASA Biofuel Algae
Grown Inside Floating Plastic Bags
NASA has developed a system capable of growing large amounts of algae for biofuel production within a network of floating plastic bags
, an innovation its developers say could ultimately produce a new fuel source. By pumping wastewater and carbon dioxide into four nine-meter plastic bags at a demonstration plant in California, researchers have shown that the system can grow enough algae to produce nearly 2,000 gallons of fuel per year under ideal conditions, according to a report in MIT’s Technology Review
. If built near wastewater plants, the technology would overcome two of the challenges associated with large-scale algae biofarms — access to huge amounts of fertilizer and large areas of land. One significant challenge, however, is that the technology currently would require an enormous amount of plastic. For instance, a scenario capable of producing 2.4 million gallons of algae per year would also require five square kilometers of plastic bags, which would likely have to be replaced annually.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
, winner of the Yale Environment 360 Video Contest, documents the work of African researchers monitoring wildlife in Uganda's remote Bwindi Impenetrable National Park. Watch the video.