Wednesday, February 22, 2006

Bay Area Poop to Power

Well, Treehugger beat me to the punch on this one (yep, that's right, Lloyd), but those of you who have been around for a while know I never miss a "poop to power" story. From the AP, news that San Francisco is piloting a project to turn it's ample amount of dog poop into methane:
Within the next few months, Norcal Waste, a garbage hauling company that collects San Francisco's trash, will begin a pilot program under which it will use biodegradable bags and dog-waste carts to pick up droppings at a popular dog park.

The droppings will be tossed into a contraption called a methane digester, which is basically a tank in which bacteria feed on feces for weeks to create methane gas.

The methane could then be piped directly to a gas stove, heater, turbine or anything else powered by natural gas. It can also be used to generate electricity.
As pet poop can't be composted, this is a great idea for dealing with material that creates 4% of SF's total residential waste stream. Let's hope that this is yet another practice that starts in the Bay Area and spreads around the country.

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