Natural Prairie Dairy uses a slurry-processing system that leverages vapor compression to turn cow slurry into three useful by-products. “Adopting a fully closed-loop system has allowed us to become more self-sufficient in a tumultuous market.”
Researchers have discovered that adding a chemical commonly used as a nitrogen fertilizer in to slurry could dramatically slash greenhouse gas emissions.
The technology can turn livestock slurry into nitrogen-rich fertilizer by using air and electricity. Soon, it may find application in other food production systems such as pork.