BioCycle

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Next Year's Conference:
October 21-23, 2013 • Columbus, Ohio

BioCycle Renewable Energy from Organics Recycling Conference

Presentation Descriptions
Monday, October 29, 2012 — Track 2

Updated 10.3

 
Presentation previews:   Monday: Plenary | Track 1 | Track 2 | Track 3   Tuesday: Track 1 | Track 2 | Track 3


Monday, October 29, 2012 | | TRACK 2 || 11:00 AM — 12:15 PM

Building Markets For Digester Products

Market Potential: Products,Coproducts From Anaerobic Digestion
Jerry Bingold, Innovation Center for U.S. Dairy
What is the estimated market value of products and services potentially provided by 2,647 digesters if they were installed in large U.S. dairy operations nationwide? A peer-reviewed report from the Innovation Center for U.S. Dairy analyzes three scenarios for distribution of digesters and the production and estimated market values of the products and coproducts, including the highest potential value of the energy content of the biogas. Findings of the analysis will be presented.

Current AD Fiber Usage and Values
Ron Alexander, R. Alexander Associates, Inc.

Recovering Nutrients From High Solids Digestate
Young Eum, BKT Co., Ltd.
Digestate is concentrated slurry of organic matter composed of anaerobically digested livestock manure, food waste and energy crops. Raw digestate is rich in dissolved nitrogen and particle-bound phosphorous, thus providing reuse benefits. Further treatment is required to comply with disposal regulations and also recover and concentrate nutrients such that nitrogen, phosphorus, and potassium can be marketed as a fertilizer. An approach to achieve recovery and concentration is membrane treatment. This paper reports on the feasibility and benefits of using anti-fouling ultrafiltration and nanofiltration membranes to recover nutrients while treating digestate and hog manure. Codigestate (3.5% Total Solids), poultry manure digestate (2.9% TS), and raw hog manure (2.8% TS) were treated using pilot scale anti-fouling membrane system with UF and NF membranes at 5 to 12 kg/cm2 (70~170 PSI). Nutrient recovery rate, flux, permeate recovery rate, and water quality data are presented for each application.

Monday, October 29, 2012 | | TRACK 2 || 1:45 PM — 3:30 PM

Farm Digester Projects, Economics

Farm Digesters In Minnesota
Kevin Hennessy, Minnesota Department of Agriculture
The presentation will "tour" the six existing on-farm anaerobic digesters in the state of Minnesota. Following the guidelines set out by the Wisconsin Agricultural Biogas Casebook, the details, sights and scenes from the six sites will be shown, as well as the challenges that have existed and do exist for further investment in on-farm AD in the state.

Modular Digester On Dairy Farm
Amber Blythe, BIOFerm Energy Systems
An emerging need has been identified in the U.S. to serve smaller farms with between 50 and 500 head of cattle. A small, standardized, all-in-one system for these small farm applications has been developed. Allen Farms, near Oshkosh, Wisconsin, will be the first U.S. installation of a small plug and play system fitted with an agitated plug flow digester. This digester operates on dairy manure and bedding with a total solids content of about 15 percent. Presentation will discuss ongoing operations of the Allen Farm installation from both the technology provider and the farm's point of view. Details include farm logistics, sources of funding, installation, operation and overall impact of the project.

Evaluating Economics Of Swine Waste Digestion
Joel Burken, Missouri University of Science & Technology
Presentation discusses an economic model constructed to evaluate the financial potential of anaerobic digestion for swine waste considering initial investments, associated costs and new revenue streams of carbon credits, renewable energy credits and electricity sales. Current available subsidies were also taken into consideration in this analysis. The model was formulated based on case specific inputs and applied to three case studies in central Missouri. Laboratory-based treatability tests also determined operation-specific biogas generation rates and potential for the specific wastes; statistically significant differences were discovered. Different type of swine feeding operation clearly showed that biogas generation is impacted by operation types, which is more important than ever if the biogas is part of the economic projections on viability of individual projects. In all the three scenarios the projects were profitable with the presence of known state and federal subsidies. However, since the subsidies may not be available for many years, high carbon credit and electricity prices are probably needed for future profitability of the technology.

Analysis Of Wet Versus Dry Fermentation
Alessandro Chiumenti, University of Udine, Italy
 

Monday, October 29, 2012 | | TRACK 2 || 4:15 PM — 6:00 PM

Food Waste Management

Connecting The Dots In A Food Generator's Sustainability Program
Robin Sweere, Sweere Consulting
Success of organic waste separation and utilization programs involves connecting the dots between various departments in the food retail sector, including food purchasing, energy and utilities and solid waste. An example includes purchasing locally sourced fruits and vegetables grown in greenhouses adjacent to an anaerobic digester that is processing food waste from the grocery store. The greenhouse is heated with recovered heat from the biogas engine. How to engage all stakeholders in this type of closed-loop solution will be discussed, including how to ensure that the stores' food buyers are aware of the sustainability team's objectives and are included in the decision-making process.

Highest And Best Use Of Residential, Commercial Organics — AD Feasibility Study
Bryan Ukena, Eureka Recycling and Aaron Burman, Resource Recycling Systems
Eureka Recycling obtained Department of Energy funding to complete an in-depth analysis of residential and small commercial source separated organics (SSO) management, looking at the social, environmental and economic impacts of a variety of prevention, collection and processing methods. By applying zero waste principles, the study was designed to determine how to achieve maximum environmental, social and economic benefit through a SSO program, balancing end of use energy production with lifecycle energy savings. This study sheds new light on common assumptions about anaerobic digestion, aerobic composting and compost collection methods. Key findings from this report will be presented by Eureka Recycling and Resource Recycling Systems, feasibility study consultants for this project.

Curbside Organics And AD Feasibility Study
George Dreckmann, City of Madison (WI) Streets
Presentation provides an update on Madison's curbside organics collection pilot. New data on estimated cost for three different types of facilities — wet, dry and dry fermentation — will be discussed, as well as an update on the project timeline.

Schools As Laboratories Of Organics Recycling Innovation
John Jaimez, Hennepin County Department of Environmental Services
Approximately 10 years ago, Hennepin County, Minnesota began reaching out to schools to test whether organics recycling could be made viable within these institutions. It started out working with 15 schools in 2 districts to implement organics collection in their kitchens and cafeterias. Today, more than 120 schools have begun organics recycling programs, helping to transform the Minneapolis area into a hotbed of organics composting. Presentation will help attendees think about how schools in their area can become a vital part of their organics recycling initiatives, looking at several elements that have played critical roles: Hennepin County's Waste Abatement Incentive Fund & School Recycling Assistance Program grant funds; Provision of technical assistance such as training, signs and labels; Evolution of organics hauling, and availability of compostable plastic bags and service ware and a local composting infrastructure; Importance of well-designed sorting stations and monitors; Giving compost back to the schools for local food production; and Strengthening and support of organics recycling in other sectors.