Waste to Fuels Publications

55 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.

Site-Specific Trade-offs of Harvesting Cereal Residues as Biofuel Feedstocks in Dryland Annual Cropping Systems of the Pacific Northwest, USA

Huggins, D.R., C.E. Kruger, K.M. Painter, D.P. Uberuaga. BioEnergy Research. June 2014, Volume 7, Issue 2, pp 598-608.

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

CSANR webpage.  Anaerobic digestion (AD) is a process in which organic matter is converted into methane by bacteria in the absence of oxygen. Under typical dairy farm conditions manure is stored in open ponds and applied to fields, where decomposition often occurs under anaerobic conditions. This leads to the natural, open-air production of methane, a greenhouse gas with more than 20 times the warming value of carbon dioxide. By enclosing, controlling and accelerating this natural anaerobic conversion process, not only can the methane be contained, but it can be converted to renewable energy, providing two mechanisms for carbon sequestration and global warming reduction – methane capture/conversion and fossil-fuel energy offset.

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.

Methods for Producing Biochar and Advanced Biofuels in Washington State Part 3: Literature Review Technologies for Product Collection and Refining

Garcia-Perez, M. et. al. 2012. This is the third of a series of reports exploring the use of biomass pyrolysis to sequester carbon and to produce fuels and chemicals.

Methods for Producing Biochar and Advanced Biofuels in Washington State Part 2: Literature Review of the Biomass Supply Chain and Preprocessing Technologies From Field to Pyrolysis Reactor

Garcia-Perez, M., C. Kruger, M. Fuchs, S. Sokhansanj, P. Badger, J. Garcia-Nunez, T. Lewis, and S. Kantor. 2012. Second Project Report. Department of Biological Systems Engineering and the Center for Sustaining Agriculture and Natural Resources, Washington State University, Pullman, WA, 79 pp.

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.

Building Markets for Biofertilizers — Perceptions and Performance

Video of keynote address by Chad Kruger at the 26th Annual BioCycle West Coast Conference April 2012.

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.

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