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Environment

Canadian city closes the loop on waste

by Melody M. Bomgardner
March 19, 2018 | A version of this story appeared in Volume 96, Issue 12
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Most Popular in Environment

This photo shows the two steel spheres of a large waste bioreactor.
Credit: Invest Surrey
The city of Surrey, British Columbia, will produce fuel in this bioreactor.

The city of Surrey in British Columbia has opened what it calls North America’s first closed-loop waste management system. The $68 million facility uses anaerobic digesters to convert curbside organic waste into methane that then powers the city’s fleet of waste collection vehicles. Excess fuel will go to a new energy system for the city’s center. The facility is expected to reduce greenhouse gases by 49,000 metric tons per year.

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