Dairy Waste Biorefinery
DAIRY WASTE BIOREFINERY (click for concept paper)
Washington State is tenth in the nation in milk production, with its 420 commercial dairies producing more than 700 million gallons in 2011. Unfortunately, these cows also produce manure. If not effectively managed, this manure can contribute to degradation of soil quality (accumulation of nutrients), water quality (eutrophication and pathogens), and air quality (greenhouse gas emissions, volatile organic compounds, particulate matter, and odors). Anaerobic digestion can mitigate many of these issues, while also producing renewable energy and other valuable products. Through the integration of multiple additional technologies, more products and improved economic and environmental sustainability can be achieved—advancing the adoption of AD in the state.