Biogas Upgrading on Dairy Digesters
Format: Peer-Reviewed Extension Publication
Excerpt: Overview of technologies used to clean and upgrade dairy digester biogas into renewable natural gas.
Year Published: 2024
Frear, C.
Craig Frear
Anaerobic Digester Project and System Modifications: An Economic Analysis
Format: Peer-Reviewed Extension Publication
Excerpt: Economic analysis comparing profitability of dairy anaerobic digester configurations, including renewable natural gas and heat and power systems.
Year Published: 2019
The Dairy Manure Biorefinery
Format: Report
Excerpt: Overview of the dairy biorefinery concept integrating anaerobic digestion with technologies producing fuels, power, and value-added products.
Year Published: 2019
Technology Research and Extension Related to Anaerobic Digestion of Dairy Manure: 2015–17 Biennium
Format: Report
Excerpt: Report summarizing Washington state research and extension projects advancing anaerobic digestion technologies for dairy manure management.
Year Published: 2018
Approaches to Nutrient Recovery from Dairy Manure
Format: Peer-Reviewed Extension Publication
Excerpt: This Extension manual supports the dairy industry and its partners through exploration of nutrient recovery from manure after anaerobic digestion.
Citation: Frear, C., J. Ma, G. Yorgey. 2018. Approaches to Nutrient Recovery from Dairy Manure. Washington State University Fact Sheet. EM112E.
Year Published: 2018
Completing a Successful Feasibility Study for an Anaerobic Digestion Project
Format: Peer-Reviewed Extension Publication
Excerpt: Guidance on evaluating technical, financial, and market feasibility when developing livestock-based anaerobic digestion projects.
Citation: Jensen, J., C. Frear, C. Kruger, and G. Yorgey. 2018. Completing a Successful Feasibility Study for an Anaerobic Digestion Project. Washington State University Extension FS292E.
Year Published: 2018
Phosphorus Uptake by Potato from Fertilizers Recovered from Anaerobic Digestion
Format: Publication
Excerpt: Study evaluates potato phosphorus uptake and yield response to fertilizers recovered from anaerobic digestion systems.
Year Published: 2016
Economic Feasibility of Anaerobic Digester Systems with Nutrient Recovery Technologies
Format: Peer-Reviewed Extension Publication
Excerpt: Economic analysis of nutrient recovery technologies paired with anaerobic digesters for manure management and bioenergy production.
Year Published: 2016
Digested Fiber Solids: Methods for Adding Value
Format: Peer-Reviewed Extension Publication
Excerpt: Explores uses and markets for fibrous solids produced during anaerobic digestion of dairy manure.
Year Published: 2016
Anaerobic Digestion Effluents and Processes: The Basics
Format: Peer-Reviewed Extension Publication
Excerpt: Overview of anaerobic digestion processes, reactor conditions, and monitoring methods used to manage manure and organic wastes.
Year Published: 2015
