Now showing items 1-7 of 7

  • Anaerobic digester project and system modifications : an economic analysis 

    Galinato, Suzette P.; Kruger, Chad E.; Frear, Craig, 1964- (Pullman, Washington : Washington State University. Extension., 2015-02)
    This WSU publication provides an abbreviated review of the information found in the longer publication, Renewable Natural Gas and Nutrient Recovery Feasibility for DeRuyter Dairy. It introduces readers to key concerns ...
  • Biogas upgrading on dairy digesters 

    Kennedy, Nicholas; Yorgey, Georgine; Frear, Craig, 1964-; Evans, Daniel A.; Jensen, Jim; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2015-09)
    Recently the prices for electricity production have fallen in many parts of the US, reducing the profitability of digesters. As received electrical rates have continued to decrease, interest in other higher value end-uses ...
  • Considerations for incorporating co-digestion on dairy farms 

    Kennedy, Nicholas; Yorgey, Georgine; Frear, Craig, 1964-; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2016-07)
    This publication discusses the impacts of incorporating co-digestion at dairy-based anaerobic digesters. That is, mixing manure with non-manure waste in anaerobic digesters. This information is based on stakeholder ...
  • Digested fiber solids : methods for adding value 

    Jensen, Jim; Frear, Craig, 1964-; Ma, Jingwei; Kruger, Chad E.; Hummel, Rita L. (Rita Lynn); Yorgey, Georgine (Pullman, Washington : Washington State University. Extension., 2016-11)
    Anaerobic digestion (AD) of dairy manure and other organic residuals produces biogas, a source of renewable power and fuel, while also benefitting the environment by capturing and converting methane, destroying pathogens ...
  • Economic feasibility of anaerobic digester systems with nutrient recovery technologies 

    Galinato, Suzette P.; Frear, Craig, 1964-; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2016-09)
    Anaerobic digesters are used worldwide to produce bioenergy and sustainably treat organic waste from municipal, industrial, and agricultural operations. This publication analyzes the economic feasibility of three nutrient ...
  • On-farm co-digestion of dairy manure with high energy organics : stakeholder interviews and literature review 

    Kennedy, Nicholas; Yorgey, Georgine; Frear, Craig, 1964-; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2015-09)
    The Anaerobic Digestion Systems Series provides research-based information to improve decision-making for incorporating, augmenting, and maintaining anaerobic digestion systems for manures and food by-products. This ...
  • The rationale for recovery of phosphorus and nitrogen from dairy manure 

    Yorgey, Georgine; Frear, Craig, 1964-; Kruger, Chad E.; Zimmerman, Tara (Pullman, Washington : Washington State University. Extension., 2014-06)
    This publication explains the rationale for implementing emerging phosphorus and nitrogen recovery technologies on dairies, with a particular focus on the Western United States.