PLANT

Xebec biogas system helps energize US university


February 17, 2010
by PLANT STAFF

Xebec’s system collects and cleans up methane gas from a landfill site.

Photo: Xebec

MONTREAL: Xebec Adsorption Inc. has been recognized for its contribution to a US Environmental Protection Agency (EPA) renewable energy project at the University of New Hampshire.

The Montreal-based provider of biogas upgrading, natural gas and hydrogen purification said its biogas system enables the university to purify methane gas collected at a landfill in nearby Rochester, NH, to provide up to 85% of the biogas fuel needed to run its electric power cogeneration systems.

Under its Landfill Methane Outreach Program (LMOP), the EPA honoured the university’s EcoLine group at the January LMOP Conference in Baltimore, Md., for its creative use of landfill gas to reduce methane emissions and create renewable energy from it.

The EcoLine was a university team program involving corporate partners that included Xebec, Waste Management Inc., EMCOR Energy Services, SCS Energy, SCS Field Services and Siemens.

The team designed and integrated different components that seamlessly collect, clean and supply landfill gas for energy production.

The system collects methane gas from more than 300 extraction wells at the Waste Management landfill site. Xebec’s M-3100 Methane Upgrading PSA (pressure swing adsorption) system removes carbon dioxide and other contaminants from the gas before it flows through a 12.7-mile pipeline to the university’s cogeneration plant where a fuel management system supplies the biogas to Siemens turbine generators that originally were designed to run on natural gas. Heat lost during the generation of electricity is captured and used to warm campus buildings.

In addition to reducing the cost of fuelling the cogeneration plant, the EPA said EcoLine has provided major environmental benefits. The use of landfill gas in this manner is equivalent to reducing the average annual greenhouse gas emissions from 12,500 passenger cars or carbon dioxide emissions from more than 159,000 barrels of oil consumed, and it provides annual energy savings that equate to heating nearly 18,700 homes.
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