The Dairy Manure Biorefinery
Graphic poster depicting the biorefinery concept. Developed by Nick Kennedy, Jingwei Ma, Craig Frear, Georgine Yorgey, Tara Zimmerman, Chad Kruger, and Jim Jensen.
Anaerobic Digestion (Biogas)
The Rationale for Recovery of Phosphorus and Nitrogen from Dairy Manure
Yorgey, G., C. Frear, C. Kruger, T. Zimmerman. 2014. WSU Extension Fact Sheet FS136E. This fact sheet is part of the AD Systems Series.
Dairy Waste Biorefinery
Kennedy, N., C. Frear, M. Garcia-Perez, C. Kruger, and S. Chen. 2013. Concept illustration and description.
Economics of Dairy Digesters in Washington State
Kennedy, N. 2013. BioCycle Magazine. Feasibility study supports a shift from the conventional CHP model to a renewable natural gas (RNG) model that takes advantage of the accelerating move to natural gas fuels in the transportation sector.
Organic Waste Biorefinery
Kennedy, N., C. Frear, M. Garcia-Perez, C. Kruger, and S. Chen. 2013. Concept illustration and description.
Review of emerging nutrient recovery technologies for farm-based anaerobic digesters and other renewable energy systems
Prepared for Innovation Center for US Dairy by Jingwei Ma, Nick Kennedy, Georgine Yorgey and Craig Frear. Nov 2013. Washington State University.
The effects of the antibiotics ampicillin, florfenicol, sulfamethazine, and tylosin on biogas production and their degradation efficiency during anaerobic digestion
Mitchell, S., J. Ullman, A. Teel, R. Watts, C. Frear. Bioresource Technology Volume 149, December 2013, Pages 244–252.
Anaerobic Digestion (AD) Technology Certificate Program
Website highlighting a WSU – Bellingham Technical College partnership to offer training for anaerobic digestion technicians. Full curriculum, videos and more available online.
Efficient Use of Algal Biomass Residues for Biopower Production with Nutrient Recycle: Final Project Report
Jarvis, E. R. Davis, C. Frear. Aug 2013.
Anaerobic Digestion Systems: Integrating emerging technologies to improve environmental and economic impact
C. Frear, C.Kruger, H. Collins, M. Garcia-Perez, C. Stockle, R. Shumway, G. Astill, T. Ewing, N. Kennedy, T. Khalil, and G. Yorgey. July 2013. Academic Poster.