News & Information

Sewage Sludge Treasure

Top of Mind with Julie Rose
  • Dec 10, 2015 10:00 pm
  • 15:44

Guest: Paul Westerhoff, PhD, Environmental Engineering Professor at Arizona State University  We have treasure in a most unlikely place. Researchers have found significant amounts of precious metals in sewage sludge. They say that the valuable metals in bio-solids may be worth up to $13 million per year for a community of 1 million people.