Currently, there are 86 facilities in the US that combust municipal solid waste (MSW) for energy recovery. After MSW is combusted in a Waste-To-Energy (WTE) facility, what percent of the original volume of trash remains as ash?
a. 5%
b. 7%
c. 10%
d. 15%
Answer: c
Brian Karnofsky
Environmental Resource Center
http://www.ercweb.com

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