Energy Publications

117 Publications

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.

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.

Methods for Producing Biochar and Advanced Biofuels in Washington State Part 1: Literature Review of Pyrolysis Reactors

Garcia-Perez, M., T. Lewis, C. Kruger. 2011. Funding for this study is provided by the Washington State Department of Ecology with the intention to address the growing demand for information on the design of advanced pyrolysis units. This is the first of a series of reports exploring the use of biomass thermochemical conversion technologies to sequester carbon and to produce fuels and chemicals.

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.

Biogas potential and microbial population distributions in flushed dairy manure and implications on anaerobic digestion technology

Frear, C., Wang, Z., Li, C., Chen, S., (2011). Journal of Chemical Technology & Biotechnology, 86:145-152.

An Integrated Pathogen Control, Ammonia and Phosphorus Recovery System for Manure and/or Organic Wastes

Q. Zhao, A. Jiang, L. Yu, C. Frear, and S. Chen. Poster presented June 2011.

WRDC Rural Connections Newsletter: Climate Change issue

Western Rural Development Center’s Rural Connections Newsletter Climate Change issue June 2011 contains three articles written by CSANR faculty and staff members. View the entire issue here (6 MB), or view the individual articles by clicking the titles here: Anaerobic Digestion in the Pacific Northwest; Climate Change and Family Forest Landowners in the Pacific Northwest: Attitudes & Understanding; Climate Change and Agriculture in the Pacific Northwest.

An Integrated Pathogen Control, Ammonia and Phosphorus Recovery System for Manure and/or Organic Wastes

C. Frear. May 2011. PowerPoint presentation at 2011 AgSTAR Conference.

Overview of Biomass Pyrolysis Technologies – Historical developments and potential for the production of bio-char, advances fuels and high value chemicals

Recorded webinar (online presentation) from June 1st, 2011 by Manuel Garcia-Perez, PhD; Assistant Professor, Biological Systems Engineering. The reactors used for biomass pyrolysis can be classified into slow and fast pyrolysis. While slow pyrolysis reactors are mainly used to produce charcoal, fast pyrolysis is the technology of choice to maximize bio-oil yields. Yields as high as 80 wt can be obtained with this technology. During the webinar historical developments and potential of pyrolysis technologies for the production of bio-char, advanced fuels and high value chemicals are discussed.

Economic tradeoff between biochar and bio-oil production via pyrolysis

Yoder, J., S. Galinato, D. Granatstein and M. Garcia-Perez. 2011. Biomass and Bioenergy, 35(5):1851-1862.

Oilseed Production Case Studies in the Eastern Washington High Rainfall Zone

Sowers, K., D. Roe, and B. Pan. 2011. Extension Bulletin EM037E.

Camelina Production in the Dryland Pacific Northwest

Hulbert,S., S. Guy, B. Pan, T. Paulitz, B. Schillinger, D. Wysocki, and K. Sowers. 2011. DRAFT Extension Fact Sheet.

2011 Oilseed Production Workshops

Three oilseed crop production workshops were held the last week of January 2011 at Okanogan, Reardan and Colfax, Washington. Presenters included regional producers, university researchers, agency personnel, and industry representatives. Attendance surpassed 250 during the three days, indicating a renewed interest in utilizing oilseed crops for rotation benefits, potential economic advantages, high quality meal for livestock, and ‘home-grown’ biodiesel.

Small-Scale Biogas Technology

With support from USDA Western Sustainable Agriculture Research & Education Program (Western SARE), CSANR developed a project to explore options for developing improved technology for applications in small farm settings in the US. Resources developed in the project are available on this site.

Smale-Scale Biogas Plant Enterprise Assessment Tool

A worksheet to facilitate preliminary planning for a biogas plant on a small farm.

Bipolar effects of settling time on active biomass retention in anaerobic sequencing batch reactors digesting flushed dairy manure

Z. Wang, J. Ma, S. Chen. Bioresource Technology. Volume 102, Issue 2, January 2011, Pages 697–702.

WSU Bioprocessing and Bioproducts Engineering Laboratory

Professor Shulin Chen’s Research Laboratory group at the WSU Department of Biological Systems Engineering. Research efforts include organic waste inventory and characterization; anaerobic digestion of manure and food processing wastes; High Solids Anaerobic Digestion for the Organic Fraction of Municipal Solid Wastes (OFMSW); recovery of nutrients and fertilizers from organic wastes; and pre-treatment technology for advanced biofuels derived from organic wastes.

Biofuels Cropping Systems Research and Extension Project

Pacific Northwest cropping systems are dominated by irrigated specialty crops (ie. fruits and vegetables), high quality forages, and a dryland cereal grain system (primarily wheat). It is highly unlikely that we will ever seen the fence-row to fence-row production of commodity crops that fit the model of first generation biofuel crops (ie. corn and soybeans). However, a number of interesting alternative crops that could be used for first or second generation biofuels / bioproducts could prove to be interesting options that enable farmers to manage their current cropping systems more sustainably. For instance, the brassica crops (canola, mustard, camelina, etc.) are a valuable rotational crop for wheat by providing biological and management tools that enable producers to break up weed and disease cycles that affect wheat production. Some of the high-biomass producing grasses could provide tools to both dryland and irrigated producers to restore degraded soils. A long-term biofuels croppping systems research project to develop and evaluate the use of biofuel crops in Washington cropping systems (statewide) was established in 2007.

WSU Thermo-Chemical Engineering Laboratory: Manuel Garcia-Perez

Professor Garcia-Perez is an expert in thermo-chemical engineering of biomass into energy and products. Our work with Garcia-Perez includes the development and evaluation of biochar from the pyrolysis of woody organic wastes as a potential soil amendment.

Pacific Regional Biomass Energy Partnership

This is a 6-state effort supported jointly by the State Energy Offices and the US Department of Energy that provides a clearinghouse for information on bioenergy in the region. It is the repository for a number of research reports and tools developed by CSANR and our colleagues.

Biofuel Economics and Policy for Washington State

This report is a comprehensive response to 2007 Washington State legislation (HB 1303) that tasked Washington State University to 1) analyze the types and corresponding amounts of biofuel in the state and 2) recommend viable incentive programs to promote biofuel market development. Inside you will find policy recommendations based on analysis of a broad set of policy options, including renewable fuel standards and subsidies, carbon taxes, as well as approaches to support research, implementation of new technologies, and creation of infrastructure.

WA Biomass Inventory

Agent Heterogeneity in Adoption of Anaerobic Digestion Technology: Integrating Economic, Diffusion, and Behavioral Innovation Theories

Bishop, C.P., C.R. Shumway, and P.R. Wandschneider. Land Economics 86 (August 2010):585-608 (senior authorship equally shared).

Precision Conservation: site-specific trade-offs of harvesting wheat residues for biofuel feedstocks

Huggins, D.R., & Kruger, C.E. (2010). In R. Khosia (Ed.), Proceedings of the 10th International Conference on Precision Agriculture. 10th International Conference on Precision Agriculture, Denver, CO. Colorado State University.

Leaching Bed Reactor for Producing Stabilized Plant Growing Media from Dairy Manure

Liao, W., Frear, C., Oakley, K., Chen, S. (2010). Biosystems Engineering 106(3), 278-285.

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