At a glance
Food waste is an urgent public health issue. In the U.S., approximately 31% of post-harvest food is wasted (i.e. thrown away… Read full summary
- Funding received
- 2017-2018
- Large
- Awarded
- $35,000
- Funding partners
-
- Services and Activities Fee (SAF)
- Website & social links
Food waste is an urgent public health issue. In the U.S., approximately 31% of post-harvest food is wasted (i.e. thrown away or spoiled). This is approximately 133 billion pounds of food annually, costing approximately $161 billion ("USDA | OCE | U.S. Food Waste Challenge | FAQ’s," n.d.). This is shocking and shameful, given national rates of food insecurity and poverty. In addition, food waste often rots in landfills, creating methane gas, which is nearly 4x as damaging to the ozone layer as CO2 emissions. We have to address food waste at the local, city, and national level.
This project proposal involves building an anaerobic digester on the UW Seattle campus to utilize food waste to produce compost and renewable energy. An anaerobic digester would have three main environmental impacts on the UW Seattle Campus: 1) Carbon Emissions: the anaerobic digester would utilize approximately 135lbs of food waste per day, so less food waste would be hauled from the UW campus to Cedar Grove Composting Facility. Reducing the amount of food waste that is hauled to Cedar Grove would reduce carbon emissions from garbage/waste disposal trucks that drive from UW to Cedar Grove. 2) Soil Health: an anaerobic digester would produce nutrient-rich compost that could be applied to the UW farm and Center for Urban Horticulture (and other locations on campus). 3) Renewable Energy: an anaerobic digester would be a small-scale model of how to generate renewable energy from food waste. The food waste is broken down by microbes, which produce methane gas, and the methane gas can be used to power a generator for electricity.
The University District Food Bank (UDFB) serves some of the poorest and most vulnerable individuals in the North Seattle and University District community. The University District has one of the highest rates of poverty in Seattle, which was shown in by 2016 study that approximately 60% of University District residents have an income at or below the federal poverty threshold (Keeley, 2016). These residents often cannot access enough healthy and nutritious food and depend on UDFB to survive. UDFB distributes 45,000 pounds of food (i.e. fruits, vegetables, dairy, bread, canned food, etc.) to over 1,200 families per week, maintains a 2,000 square foot rooftop garden, and co-locates with a café (Street Bean) that employs homeless and low-income youth.
UDFB is struggling with a tragic irony though—there is too much food waste. Grocery store chains often use food banks (including UDFB) as a dumping ground for expired or damaged food, while receiving a tax break for the donation. UDFB receives food that spoils quickly, and in turn, UDFB pays ~$6,000 per year to haul away food waste to a municipal composting facility. The garbage trucks that haul away the food waste pollute the North Seattle neighborhood. The exhaust from these trucks is a public health risk for individuals and families. This inexcusable situation prevents the food bank from using their financial resources to better serve the community.
Many residents also feel stigmatized when they use the food bank. A 2016 Seattle Times article documented the feelings of one community member, “When I was going to the food bank, it’s not like I was talking about it...it’s something people don’t talk about” (Balk, 2016). This stigma hinders the food bank from integrating into the community and increasing access to UDFB’s resources.
To address these pressing community, environmental, and public health issues, we propose building an anaerobic digester at UDFB. A digester would utilize food waste to create compost and natural gas. The compost would be used on UDFB’s rooftop garden and the gas would provide electricity to power UDFB’s refrigeration system. By reducing food waste and electricity costs, UDFB would save ~$12,000 per year. With these funds, UDFB would expand their services and hire 1-2 youth who are transitioning out of homeless. These youth would operate and maintain the digester to gain job skills. UDFB also wants to create a strong educational partnership with the University of Washington (UW). Dozens of UW students and staff already volunteer at UDFB: serving clients and working on the rooftop garden, but there is no academic partnership with UW. This is an opportunity for a UW-UDFB academic partnership focusing on civil/environmental engineering, soil science, public health, and small business development. Dr. Heidi Gough from the Department of Civil & Environmental Engineering would like to sign a Memorandum of Understanding (MOU) with UDFB to formally incorporate the digester into her graduate and undergraduate curriculum, and Dr. Sally Brown from the School of Forest Resources may also be interested in incorporating the digester into her graduate/undergraduate curriculum.
Aaron Flaster
Project lead
- aflaster@uw.edu
- Affiliation
- Staff
Global Sustainability Initiative
Team member
- aflaster@uw.edu
- Affiliation
- Student
- Affiliated groups
- Registered Student Organization (RSO)
Summary
This is the Phase 2 (Full Proposal) of UW Anaerobic Digester project. The Phase 1 (Feasibility study) evaluated a) Site Location b) Gas usage c) Compost/Fertilizer usage d) Ongoing Maintenance requirements for building a 160-square foot anaerobic digester on the UW Seattle Campus. The Feasibility study is still underway, but is tentatively moving forward with the following: a) Site Location = UW Farm b) Gas usage = Power a small generator to provide electricity for appliances in the UW farm building (no electricity currently) c) Compost/Fertilizer = UW Farm/Grounds Management will share fertilizer output d) Ongoing maintenance = digester will be maintained by the UW Sustainability Coordinator (position within Grounds Management). The anaerobic digester would utilize food waste to produce renewable energy (biogas) and compost. The biogas and compost will be used for research projects by professors/students and by the UW Farm. The food waste would be provided by the UW Farm and UW Husky Union Building (HUB).
*Important change in the project proposal: We had originally planned to purchase an anaerobic digester from Impact Bioenergy (cost = ~$100,000), but we think a better alternative would be to form a lease agreement or lease-to-purchase agreement with Impact Bioenergy. Leasing is a good idea because: 1) There is no UW entity that is currently willing to “agree to take over the operational costs of this project” (CSF Project Approval Form). By leasing the digester, Impact Bioenergy will own/be liable for continued costs of the digester. 2) By leasing, we would be able to test having the digester on campus for 1-2 years, rather than permanently committing to having a digester on campus. The budget request in this proposal is to cover the leasing costs of the digester for 1-2 years.
Environmental impact
An anaerobic digester would have three main environmental impacts on the UW Seattle Campus: 1) Carbon Emissions: the anaerobic diges would utilize approximately 135lbs of food waste per day, so less food waste would be hauled from the UW campus to Cedar Grove Composting Facility. Reducing the amount of food waste that is hauled to Cedar Grove would reduce carbon emissions from garbage/waste disposal trucks that drive from UW to Cedar Grove. 2) Soil Health: an anaerobic digester would produce nutrient-rich compost that could be applied to the UW farm and Center for Urban Horticulture (and other locations on campus). 3) Renewable Energy: an anaerobic digester would be a small-scale model of how to generate renewable energy from food waste. The food waste is broken down by microbes, which produce methane gas, and the methane gas can be used to power a generator for electricity.
Student leadership and involvement
Student interest and leadership is primarily coming from a UW Registered Student Organization (RSO), called Global Sustainability Initiative (GSI). The undergraduate members include: Caelan Wisont, Zhaoyi Fang, Yushan Tong, and Kyler Jobe. GSI focuses on promoting sustainability on a global scale, emphasizing household-scale anaerobic digestion projects to create methane gas for stoves. There are also several UW MBA students involved in this project: John Turk (Class 2019), Robert Leutwyler (Calls 2019). These students are interested in examining the business model of the anaerobic digester, marketing of the fertilizer/compost produced, and scalability of small-scale anaerobic digester projects.
Education, outreach, and behavior change
Global Sustainability Initiative (GSI): GSI will conduct outreach to UW undergraduate students to build their membership and raise awareness about the anaerobic digester project. GSI will conduct outreach using tabling events, Facebook posts, and flyers. The UW Farm will also conduct outreach to students that are involved at the farm.
Feasibility, accountability, and accessibility
This is the Full Proposal to move forward with building an anaerobic digester on the UW Seattle Campus. This project has a lot of support and is a collaboration between the Undergraduate/Graduate students, Professors, UW Facilities, UW Husky Union Building, UW Farm, UW Anaerobic Digester Project Leadership Team, UW Grounds Management, UW Landscape Architects/Design Review Board, and Impact Bioenergy. Impact Bioenergy (http://impactbioenergy.com/) is a business located in Seattle, WA that designs/builds anaerobic digesters to utilize food waste and produce renewable energy and compost.
Leadership team
- Dr. Heidi Gough, PhD, Department of Civil & Environmental Engineering, hgough@uw.edu
- Dr. Sally Brown, PhD, School of Forest Resources, slb@u.washington.edu
- Aaron Flaster, BA, Research Coordinator, Department of Psychology, aflaster@uw.edu
- Global Sustainability Initiative (Registered Student Organization), gsiuw@uw.edu
Budget estimate
$35,000
Contact information
Aaron Flaster, B.A.
Research Coordinator, Department of Psychology, University of Washington
Work email: aflaster@uw.edu
Cell #: 206-616-7934
Request amount and budget
How the project will react to funding reductions
If this Phase II does not receive the full $35,000, we will still pursue additional funding to complete this UDFB project. SECURED FUNDS Anonymous Donation = $50,000 Seattle Public Utilities Waste-Free Communities Grant = $15,000 - Total Secured Funds (May, 2018) = $65,000 WAITING DECISION Boeing Employee Community Fund (ECF) - UDFB submitted this grant in November, 2017 and moved to Round 2 reviews, which involve a site visit. ECF will make their funding decisions by late June, 2018. o Sub-total: $40,000 Campus Sustainability Fund - Phase 1: $10,000 (funded, but need approval to use for UDFB project) - Phase 2: $35,000 o Sub-total: $45,000 PLANNING TO SUBMIT Neighborhood Matching Fund (NMF) = $50,000-100,000 - We are planning to submit a grant to the Neighborhood Matching Fund (NMF). NMF is a City of Seattle fund that offers up to $100,000 in matching funds if all other project funding has been secured. How much we apply for will depend on which of the following scenarios we face (given $65,000 in secured funding for each scenario): - CSF Grant + ECF = $150,000 in secured funding, apply for $60,000 - CSF Grant = $110,00 in secured funding, apply for $100,000 - ECF = $105,000 in secured funding, apply for $100,000 - Neither CSF nor ECF = $65,000 in secured funding (cannot apply for NMF because do not have all other necessary funding) - UDFB has already secured $65,000 in funding, and these are the possible scenarios we face towards reaching our total project budget of $210,000. UDFB previously applied for an NMF grant in November, 2017, but did not receive the award because not all other project funding had been secured at that time. In order to apply for an NMF grant, all other project funding MUST be secured. Thank you for your time and consideration!
Plans for financial longevity
This project will be maintained by UDFB staff. UDFB will employ 1-2 part-time staff members to maintain the digester (e.g. monitor temperature, pH, etc.). UDFB will have ongoing funding for these positions because they will be spending less money on hauling away food waste and saving money on electricity.
The academic partnership between UW-UDFB would continue in the long-run because of the MOU that would be signed by Professor Gough and Professor Brown. As the digester project gains more attention at UW, more faculty will hopefully incorporate the digester into their curriculum and more RSOs will include the digester in their outreach activities.
Problem statement
Food waste is an urgent public health issue. In the U.S., approximately 31% of post-harvest food is wasted (i.e. thrown away or spoiled). This is approximately 133 billion pounds of food annually, costing approximately $161 billion (“USDA | OCE | U.S. Food Waste Challenge | FAQ’s,” n.d.). This is shocking and shameful, given national rates of food insecurity and poverty. In addition, food waste often rots in landfills, creating methane gas, which is nearly 4x as damaging to the ozone layer as CO2 emissions. We must address food waste at the local, city, and national level.
This anaerobic digester project would provide a small-scale model of how to utilize food waste to produce renewable energy and compost. The anaerobic digester that we are proposing to install is custom-built by a Seattle-based business called Impact Bioenergy (http://impactbioenergy.com/). The digester is approximately 900 square feet and can process ~850-960 pounds of pre-consumer food waste per day. The digester can store ~1,227 square feet of RNG, which would power UDFB’s refrigeration system. Although this is a relatively small-scale model, it will show how a community organization can utilize food waste to produce RNG, which reduces methane emissions, carbon emissions, and pollution associated with hauling food waste to composting facilities/landfills. Other universities in the U.S. have installed anaerobic digesters, but we do not know of any other universities/colleges in the Pacific Northwest Region that have partnered with a food bank that has an anaerobic digester.
The anaerobic digestion project would reduce pollution in the University District neighborhood by reducing the number of garbage trucks that haul away food waste from the UDFB. By diverting food waste to the anaerobic digester, the UDFB would be supporting fuel conservation and would benefit the University District (and Washington State) by advancing bioenergy, increasing the supply of renewable energy, and decreasing the demand for fossil fuels. UDFB would become a model of renewable energy and waste reduction at the neighborhood level. In summary, the anaerobic digester would:
- Reduce UDFB’s food waste costs
- Reduce pollution by not hauling food waste and avoiding methane emissions from decomposing food waste that sits in large fields.
- Advance bioenergy that recovers renewable resources like water and organic matter.
- Provide increased community resilience via renewable energy production and food security.
Measure the impacts
To evaluate the digester’s effectiveness, we will measure:
Food waste
- Pounds of food waste diverted to digester from waste-stream (which usually goes to Cedar Grove composting facility),
- Type of food waste used (X % meat, X% vegetables, etc.)
Gas and electricity
- Cubic feet of RNG produced per week
- Amount of electricity generated per day/week
Compost
- Pounds of compost produced per week
Pollution
- Carbon emission reductions of not having to haul away X pounds of food waste
- Methane emission reductions of preventing food waste from rotting in landfill (for other facilities where food waste is not composted)
Costs
- Cost-savings of diverting waste (cost reductions of not hauling away food waste in garbage trucks)
- Cost-savings of producing compost (rather than purchasing from a 3rd party)
- Cost-savings of producing electricity/gas
Education and outreach goals
We will publicize our project in three ways:
- RSOs: GSI and the other RSOs listed above will advertise this project to UW students and publicize this digester project during their tabling events. GSI is the main undergraduate student group that is helping to push this project forward, and their current network with other RSOs will help raise awareness about our project on the UW Seattle campus.
- Signage: If the digester is built, we will create signage on/around the digester with educational information about anaerobic digestion. For instance, the signage will explain how anaerobic digestion works, how the gas/compost is being used, statistics/scale of the current project, how the project could be scaled up, other digester projects currently happening in Seattle, etc. These signs would be located on the outside of the digester and available for anyone to read.
- Undergraduate/Graduate Courses: The faculty members collaborating on this project (Dr. Heidi Gough, Department of Civil & Environmental Engineering; Dr. Sally Brown, School of Forest Resources) will encourage their undergraduate and graduate students to conduct research projects on the anaerobic digester. Dr. Gough is primarily interested in the gas production and how changing the inputs (types of food waste) affects the composition of the gas. Dr. Brown is interested in soil science and how the type of food waste affects the chemical makeup of the compost. Additionally, we will do a quarterly presentation for the Sustainability Studio (ENVIR 480) course. This would be a 15-20-minute presentation for the undergraduate students in this course at the beginning of each quarter. ENVIR 480 focuses on sustainability, and a previous group of students from this course conducted a research project on anaerobic digestion.
In addition to publicizing the UDFB project, we will continue to investigate the interest and potential for building an anaerobic digester on the UW campus. We had originally been pursuing CSF funding and gathering student/faculty/staff support build a digester on the UW campus. There has been support for the project, but it is proving to be difficult to find a location for the digester on the UW Seattle. We will continue to investigate interest and feasibility for this UW project, as a way of conducting student outreach.
Student involvement
This project would involve 10-15 UW graduate/undergraduate student volunteers per year. These students would conduct research projects on any aspect of the digester (e.g. gas composition, compost, engineering, business, etc.). A UW faculty member (Dr. Heidi Gough or Dr. Sally Brown) would supervise these students and oversee their research papers/projects.
The local small-business (Impact Bioenergy) that designs and builds anaerobic digesters would build a custom-designed digester at UDFB. Volunteers from the community (residents, UW students, nonprofit organizations) could participate in building the anaerobic digester, and the UW student volunteers could also be trained to lead digester tours for UW students and community members.
A UW Registered Student Organization (RSO), Global Sustainability Initiative (GSI), has been the main RSO supporting student involvement and interest in this project. The undergraduate members include: Caelan Wisont, Zhaoyi Fang, Yushan Tong, and Kyler Jobe. GSI focuses on promoting sustainability on a global scale, emphasizing household-scale anaerobic digestion projects to create methane gas for stoves. GSI grew out of SafeFlame LLC, which was started by a UW MBA graduate (Kevin Cussen), and received a CSF grant in 2015-2016. GSI also connects interested students to anaerobic digestion projects and gets students excited about working with anaerobic digestion, renewable energy, and public health. GSI would promote interest among other RSOs and recruit undergraduate students from the Sustainability Studio (ENVIR 480) course to conduct research projects on the anaerobic digester.
The digester project team has also reached out to the following RSOs to increase student support/interest: Eco-Reps, Huskies for Food Justice, Students Expressing Environmental Dedication (SEED), and Engineers Without Borders.
The University of Washington (UW) is located within 10 minutes walking distance of the UDFB, but the UDFB receives relatively little attention from the UW community. Very few people at UW are aware of the food bank and its mission, and we believe this anaerobic digestion project would help establish a thriving partnership between UW and the UDFB. With an anaerobic digester, there would be a variety of departments, students and professors that could collaborate with the food bank. Several environmental departments at UW, such as Civil & Environmental Engineering and School of Forest Resources are eager to conduct research projects on the anaerobic digestion process. There is a wide range of topics and ideas that could be explored: the engineering of how to design/construct an efficient and safe digester for community-level operations, the microbiology of how food waste can be turned into compost, and the public health of how an anaerobic digester can address food insecurity. Undergraduate students, graduate students, and professors would be able to support the food bank with ideas and projects on how to improve the anaerobic digestion process. Although this project is not located on the UW campus, we believe that it is reasonable to ask for Campus Sustainability Funding (CSF) to support this project because of the potential to establish a strong academic partnership between UW-UDFB, which would give students and faculty access to digester technology. This collaboration between UW and the UDFB would be the first in the nation (we know of no other university in the U.S. that has partnered with a food bank to study its anaerobic digester).
In summary, building an anaerobic digester would allow UDFB to:
- Host free community workshops focusing on food waste utilization and renewable energy production.
- Reduce food waste disposal costs and increase services to residents.
- Become a center of community education about food waste, public health, and renewable energy.
- Establish a strong academic and educational collaboration with UW.