Landfill
Gas is generated naturally through the decomposition of organic matter
buried in a landfill. Landfill gas is composed of 50% methane, 45%
carbon dioxide, and 5% others (hydrogen sulfide, VOC, etc.). Vertical
or horizontal wells are placed throughout the landfill. The gas is
pulled to a central processing facility or blower/flare station where
the methane gas is burned
or sent to the on-site glass blowing studio, clay studio, or the boilers.We
burn the excess gas, as storing it is not feasible.
Most
of us are aware of the so-called greenhouse effect and global warming.
Methane is considered a strong greenhouse gas. According to U.S.
Environmental Protection Agency (EPA) figures the global warming
potential (GWP) of methane, (a measure that uses carbon dioxide
as a reference gas) is 21. A GPW of 21 means that over a period
of 100 years, methane is 21 times more effective at trapping heat
in theatmosphere than carbon dioxide. By removing and combusting
methane from landfill
gas, communities can help mitigate the potential damage from global
warming. Landfill gas-to-energy projects provide communities with
a low cost and responsible source of energy (compared to fossil
fuels) and can contribute to the reduction of hazards and foul odors
associated with landfills.
According to EPA's Landfill Methane
Outreach Program, in the year 2000, landfill-gas-to-energy projects
prevented the released of 4.2 million metric tons of carbon dioxide.
This is the equivalent of removing 2.8 millions cars from the road.
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