Defnition

WHAT IS LANDFILL GAS?

The anaerobic digestion of trash in a landfill naturally produces a methane-rich gas that can be burned to produce electricity. As shown in the table below landfill gas  is typically 50 to 55% methane, the remainder being carbon dioxide, nitrogen, and oxygen. Hundreds of thousands of megawatts are produced in this way every year around the world, representing power production that did not require the use of fossil fuels.

Landfill gas contains Siloxanes, a consumer chemical that can foul combustion equipment. While gas turbines have demonstrated reliable operation over the years firing landfill gas, Solar does have recommendations regarding the use of gas turbines in these applications.

Type of Gas                Landfill

Methane                        50%

Carbon Dioxide               40%

Nitrogen                         8%

Oxygen                           2%

Total                            100

 

More information on landfill gas can be found at the following websites:

US EPA Landfill Methane Outreach Program (LMOP)

Solid Waste Association of North America (SWANA)

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