Waste Management unveiled the latest technology at its Outer Loop Recycling and Disposal Facility, in Louisville (Kentucky), capturing methane produced from landfill waste and converting it into pipeline quality, usable and renewable natural gas. Moreover, the Outer Loop facility serves as a model for a planned rollout of additional facilities in the coming years. Waste Management also operates renewable natural gas facilities in Illinois (Milam Landfill) and Ohio (American Landfill).
The $30-million facility processes up to 5,000 standard cubic feet per minute (SCFM) of incoming landfill gas. This equates to about 2,500 mmbtu per day of biomethane, or 18,000 diesel gallon equivalents (DGE) per day, enough to fuel about 800 of the company’s CNG collection trucks. Waste Management’s 110 CNG stations deliver 60 million diesel equivalent gallons of natural gas each year, and its fleet of 6,700 natural gas trucks represents 30% of the company’s overall collection fleet.
“Waste Management’s innovative renewable natural gas facilities close the loop by converting discarded waste into beneficial gas that can go into the pipeline and fuel our very own CNG collection vehicles,” said Jim Trevathan, Waste Management executive vice president and chief operating officer.
About 16 million diesel equivalent gallons of renewable natural gas are produced by harnessing the methane at the company’s landfills with biogas facilities. Waste Management uses this bio-CNG fuel a portion of its collection fleet, lowering fuel costs and reducing greenhouse gas emissions more than 80% compared to those powered by diesel.
Source: Waste Management