A proposed plant that would use a high-heat process to turn sludge into fertilizer has residents worried about odors and property values.

“Our work reveals a more effective way to control how nitrogen moves and transforms during sludge conversion,” said the study’s corresponding author. “By introducing a two-stage process, we can ...

The Aurora City Council is looking at spending about $1.8 million for a new contract to have lime sludge removed from the city’s water treatment plant. Aldermen on the Infrastructure and Technology ...