Sustainability in an Urban Environment Through Anaerobic Digestion - Biocycle


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Sustainability in an Urban Environment Through Anaerobic Digestion - Biocycle

  1. 1. Sustainability in an Urban Environmentthrough Anaerobic DigestionBiocycle 2012, Portland, OR
  2. 2. Introducing EISENMANNEISENMANN is a leading internationalsupplier of general finishing environmental technology material handling & conveyor systems process and high-temperature technologyEISENMANN specializes in... plant engineering highly flexible systems integration market and technology leader for individual components and entire systems service provider with a broad service offering 2
  3. 3. Introducing EISENMANNEISENMANN offers … reference installations worldwide custom and modular solutions global services detailed system and process solutions top quality and reliabilityEISENMANN facts & figures … established in Stuttgart, Germany in 1951 12 locations worldwide US location Crystal Lake, IL since late 70‘s Global workforce of approx. 2,800 employees More than 90 Biogas facilities built to date 3
  4. 4. Market Drivers Green Waste - Organics Diversion  Organic wastes make up >24% of materials sent to landfills in US  Eliminating methane emissions from compostable organics is equivalent to removing 20% emissions from US coal fired power plants  US Congress is actively debating new policy to promote Anaerobic Digestion Project Development 4
  5. 5. Objective Organic waste diversion concept in an urban environment Case study of implementing an anaerobic digestion / biogas system into an urban vertical farming operation in the Chicago stock yards. 5
  6. 6. Plant Chicago is a nonprofit organization by founder John Edel, dedicated to bringing sustainable,urban agriculture to vacant industrial buildings, while improving health and vitality and creatinggreen-collar jobs.  Repurposing 93,500 sq.ft. retired meatpacking facility into net zero energy vertical farm  Aquaponics growing system (combining aquaculture with hydroponics)  Incubation of sustainable foods businesses offering low rent, low energy cost  Licensed shared kitchen rentals  Creation of 125 jobs in Chicago’s economically distressed “Back of the Yards” neighborhood  Diversion of over 10,000 tons of food waste from landfills 6
  7. 7. Concept Closed resource loop 7
  8. 8. Principles of Biogas production – Input materials Organic input substrates supplied from:  Agriculture  Food processing facilities  Restaurant waste  Yard waste and grass clippings  Waste management facilites 8
  9. 9. Biogas YieldOrganic input substrates can vary greatly and result in different gas qualities and quantities.Substrates have an important influence on plant technology selected for anaerobic digestionsystems. Source: AEBIOM Roadmap to Biogas 2010 9
  10. 10. Principles of biogas production What is Biogas ? 1 2 3 4 Hydrolysis Acidogenesis Acetogenesis Methanogenesis Acidification phase Acetic acid formation Methane formation Composition of Biogas Component Fraction Pre-treatment Output Digested Anaerobic fermentation Methane 40 - 75% substrate (in 4 phases) Carbon dioxide 25 - 55% Water vapor 0 - 10% Trace gases 0 - 5% Substrate input toSubstrate input to anaerobic pre-treatment fermentation Agricultural fertilizer 10
  11. 11. TechnologyHigh solids horizontal fermentation plantProperties… electrical energy High dry matter content in the digester: biowaste cogeneration unit conditioning Total solids content ≥ 15% and separator above thermal energy compostDistinctive features… main digester pump Robust, durable plant technology compost All substrates can be utilized without the fertilizer need of slurrying Fully automated, continuous feed liquid substrates final storage tanksystem 11
  12. 12. Plant Rendering Phase I: 5,000 TPY Phase II: 10,000 TPY 12
  13. 13. Utilizing biogas outputCombined heat and power (CHP) unitBiogas-driven turbine powers generators to produceelectricity and steam for the buildingFunctions… Generation of electricity – used for growing lights and general electrical needs of the building Generation of heat – heat created from turbine used to heat the digester, adsorption chillers, building and industrial processes, etc. 13
  14. 14. Biogas Plant – Key Data Phase IOverall Plant Footprint: 80 ft x 170 ft Capital expense: ~ US $ 2,500,000.- Input:  5,000 tons per year (13 t/day) of organic waste Offtake:  2 MMBtu/hr of Biogas  200 kW electric @ 29% efficiency  1 ton/day of press-cake for composting  8 tons/day of liquid soil amendment to replace fossil fuel based fertilizer 14
  15. 15. Milestones July 1st 2010 - Acquisition of building September 2010 - Begin renovation October 2010 - First permanent tenant move in (Thrive Artesian Kombucha Teas) January 2011 - First kitchen/bakery operational February 2011 - Plant Chicago NFP was founded December 2011 - Purchase decision for Biogas Plant April, May 2012 - Finalizing of permitting for Biogas plant construction June 2012 - Begin construction of Biogas Plant January 2013 - Biogas plant startup 15
  16. 16. Why Anaerobic Digestion at the Plant-Chicago Sustainable Urban Agriculture in Food Desert Net Zero Energy System Reduction of Green House Gas emmissions by utilizing waste streams in onsite Biogas plant Economic benefit by creating Renewable Energy for a Microgrid Use of digestate rather than fossil fuel based fertilizer Reducing Carbon footprint by eliminating waste collection truck traffic The Plant offers free tours every Monday, Tuesday and Saturday at 2 PM ( 16
  17. 17. Promoting the use of Biogas and Anaerobic DigestionO 148 Members from the U.S., Germany, Italy, Canada and the UKO All Industry Sectors RepresentedKey Industry Goals:O Promote biogas markets, technologies and infrastructureO Achieve policy parityO Promote as a best practice for environmental stewardship and greenhouse gas reduction 17
  18. 18. ContactEISENMANN CorporationEnvironmental Technology / BiogasThomas F. Gratz150 E. Dartmoor DriveCrystal Lake, Illinois 60014E-mail: thomas.gratz@eisenmann.comInternet: ◙ 18 18