It also reduces CO2 emissions by 99.5 percent compared to other sludge-processing methods, like anaerobic digestion. "Proof-of-concept tests revealed that the NTU team's process is more efficient ...

A bill advanced from the Iowa House Thursday that would regulate anaerobic digesters at animal feeding operations.

It is also more efficient and has a smaller environmental footprint than conventional sludge management techniques such as anaerobic digestion, which relies on bacteria breaking down organic waste ...