Anaerobic Digester Supplies Onsite Energy for Michigan College
Michigan State University in Lansing has commissioned a $5 million anaerobic digester that will re-use waste from the university’s farms and dining halls to create energy for several buildings on the south end of campus.
The anaerobic digester will use about 17,000 tons of organic waste to generate 2.8 million kWh per year. About 20 percent of the energy from the digester is used to sustain the process, but the other 80 percent is available for other uses on campus, which will pay for the digester in about 15 years. In comparison, a smaller anaerobic digester already in use at MSU for research purposes uses almost all of the biogas it produces to run the system.
The feedstock the system will use includes cow manure from the MSU Dairy Teaching and Research Center; food waste from several campus dining halls; fruit and vegetable waste from the Meijer Distribution Center in Lansing; and fat, oils and grease from local restaurants.
The digester holds about 450,000 gallons of feedstock, which is then maintained at roughly 100 degrees Fahrenheit for 20 to 30 days. The organic material is decomposed by a group of naturally occurring microorganisms found in livestock manure. The result is biogas and a slurry of partially decomposed organic matter, water and nutrients.
In addition to the two on-campus anaerobic digesters, MSU is also involved in a similar project in Costa Rica. Earlier this year a digester went online that will help provide power to a village in the Central American nation. The project is a partnership between MSU and the University of Costa Rica.
- What You Need to Know About Demand Charges
- Choosing the Right LED Product for Industrial Lighting Applications
- NAEM Trends Report: Planning for a Sustainable Future
- Alarms Management: The Future is Now
- How to Automate the Collection & Delivery of Utility Billing Data
- How "Fixed" is the Fixed Price Product?
- 2014 Energy and Sustainability Predictions: Findings from Leading Professionals
- The Business Case for Corporate Sustainability Tools
- The Impact of a Changing Workforce on Facilities Management
- ARC Brief: Infrastructure: The Hidden Optimization Opportunity
- BUYING STRATEGIES IN A VOLATILE MARKET: What Businesses Need to Know about Retail Electricity Procurement
- Smart Building Technology: The Key to Comprehensive Building Performance
- What Energy Managers Need to know about Procuring Natural Gas: Guidance for 2014 Natural Gas Contracts
- Energy Optimization from the Boiler Room to the Board Room
- Your Roadmap for Energy Management: First Stop – Myths & Realities of Energy Purchasing