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Algae to the Rescue?

Monday, June 29, 2009

I'm not big on miraculous technological quick fixes in general, certainly not for a problem as vast as anthropogenic greenhouse gas emissions and global warming. Still, I read this and couldn't stop myself from getting a little excited:
Dow Chemical and Algenol Biofuels, a start-up company, are set to announce Monday that they will build a demonstration plant that, if successful, would use algae to turn carbon dioxide into ethanol as a vehicle fuel or an ingredient in plastics.

Because algae does not require any farmland or much space, many energy companies are trying to use it to make commercial quantities of hydrocarbons for fuel and chemicals. But harvesting the hydrocarbons has proved difficult so far.

The ethanol would be sold as fuel, the companies said, but Dow’s long-term interest is in using it as an ingredient for plastics, replacing natural gas. The process also produces oxygen, which could be used to burn coal in a power plant cleanly, said Paul Woods, chief executive of Algenol, which is based in Bonita Springs, Fla. The exhaust from such a plant would be mostly carbon dioxide, which could be reused to make more algae.

“We give them the oxygen, we get very pure carbon dioxide, and the output is very cheap ethanol,” said Mr. Woods, who said the target price was $1 a gallon.
Will this work, let alone on the massive scale that will be needed to replace our 20 million-barrel-per-day oil addiction? I'm skeptical, but if it does, it could totally transform our economy (for the better), slash the flows of money to Khamenei/Ahmedinejad and Our "Friends" the Saudis, enhance our national security, and save the planet from ecological disaster. Not bad for a bunch of algae. :)