Anaerobic Digestion (Biogas) Publications

79 Publications

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.

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.

2011-2013 Anaerobic Digestion Related R&D Research Summary for WSU ARC/WSDA Appendix-A Funds

Frear, C, M. Garcia-Perez, C. Kruger, S. Chen. 2013.

Methanosarcina domination in anaerobic sequencing batch reactor at short hydraulic retention time

J. Ma, B. Zhao, C. Frear, Q. Zhao, L. Yu, X. Li, S. Chen. June 2013.Bioresource Technology Volume 137, June 2013, Pages 41–50.

Anaerobic Digestion: Beyond Waste Management

May 2013. CSANR produced a 7.5 minute video showing how state-of-the-art anaerobic digestion systems can offer multiple benefits to society.

Anaerobic Digestion of Algal Biomass Residues with Nutrient Recycle

April 2013. Zhao, B., J. Ma, Q. Zhao, and C. Frear.  WSU subcontract work on Department of Energy Project 22902.

A simple methodology for rate-limiting step determination for anaerobic digestion of complex substrates and effect of microbial community ratio

J. Ma, C. Frear, Z. Wang, L. Yu, Q. Zhao, X. Li, S. Chen. Bioresource Technology.  Volume 134, April 2013, Pages 391–395.

Kinetics of psychrophilic anaerobic sequencing batch reactor treating flushed dairy manure

J. Ma, L. Yu, C. Frear, Q. Zhao, X. Li, S. Chen. Bioresource Technology.  Volume 131, March 2013, Pages 6–12.

Experimental and modeling study of a two-stage pilot scale high solid anaerobic digester system

L. Yu, Q. Zhao, J. Ma, C. Frear, S. Chen. Bioresource Technology. Volume 124, November 2012, Pages 8–17.

Renewable Natural Gas Feasibility for Qualco Energy

May 2012. Coppedge, B., G. Coppedge, D. Evans, J. Jensen, K. Scanlan, B. Scanlan, P. Weisberg, and C. Frear. An anaerobic digester case study for alternative outtake markets. A report to Washington State Department of Commerce.

Renewable Natural Gas and Nutrient Recovery Feasibility for DeRuyter Dairy

May 2012. Coppedge, B., G. Coppedge, D. Evans, J. Jensen, K. Scanlan, B. Scanlan, P. Weisberg and C. Frear. An anaerobic digester case study for alternative outtake markets and remediation of nutrient loading concerns within the region. A report to Washington State Department of Commerce.

Anaerobic Digester Technician video – Bellingham Technical College

WSU and Bellingham Technical College produced this video as a part of their grant-funded Anaerobic Digestion Technician certificate program. The video explains the technical aspects of operating and maintaining an anaerobic digester.

Two novel floor-scale anaerobic digester systems for processing food waste. Part 1: Multi-reactor, liquid recycle system for high solids. Part 2: Moderate solids system.

Frear, C., Ewing, T., Yu, L., Ma, J., and Chen, S. 2012. Olympia, WA. Washington State Department of Ecology.

Struvite as a Phosphorus Fertilizer Source for Greenhouse Crop Production – webinar

This webinar highlights recent research by Rita Hummel of WSU on struvite as a phosphorus source for greenhouse production of bedding plants and vegetable starts. Her research includes struvite derived from municipal wastewater and dairy manure. Craig Cogger opened the webinar with a brief overview of the phosphorus challenge. After Rita’s presentation of greenhouse research results, Keith Bowers discussed struvite production as one phosphorus removal technology for wastewater at livestock, food processing, and public sewage treatment sites. The webinar closed with a brief summary by Craig and an open question period.

Biochar Produced from Anaerobically Digested Fiber Reduces Phosphorus in Dairy Lagoons

Streubel, J. D., H. P. Collins, J. M. Tarara, and R. L. Cochran.; Posted online 5 Jan. 2012

Extracting valuable energy, carbon and nutrient resources from organic waste

WSU scientists have conducted extensive research on Anaerobic Digestion (AD) as a technology for recovery of methane (energy), stable carbon, and nutrients from organic wastes such as manure, food processing wastes and the organic fraction of municipal solid wastes (OFMSW). Our research has evaluated the technical and economic performance of commercially available systems, developed improved AD reactors, and commercialized WSU patented nutrient recovery technology. This webinar, presented by CSANR director Chad Kruger and CSANR scientist Craig Frear, will provide an update on the latest results from the WSU Climate Friendly Farming Project’s AD research.

Evaluation of Co-Digestion at a Commercial Dairy Anaerobic Digester

Frear, C., W. Liao, T. Ewing, and S. Chen. Clean – Soil, Air, Water 2011,39 (7), 697–704.

Anaerobic Co-Digestion on Dairies in Washington State – The solid waste handling permit exemption

WSU Extension Fact Sheet FS040E. Yorgey, G., C. Kruger, K. Steward, C. Frear, & N. Mena. August 2011.

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