Biogas fuel cell
Biogas can be made using wastewater, manure from farms, or municipal solid waste. It can be burned on-site for heat or power, or it can treated and put into natural-gas pipelines. Another possibility is using biogas in a fuel cell to make electricity. This fuel cell is being used in California, where Gills Onions is employing farm waste to make electricity. This same technology is also being used at California wastewater facilities because the state has created incentives for clean-energy technologies.
February 21, 2011 4:00 AM PST
Photo by: Gills Onion
| Caption by: Martin LaMonica
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