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Biogas Energy Potential in Florida Ann C. Wilkie Soil and Water Science Department University of Florida – IFAS Renewable Energy Workshop.

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Presentation on theme: "Biogas Energy Potential in Florida Ann C. Wilkie Soil and Water Science Department University of Florida – IFAS Renewable Energy Workshop."— Presentation transcript:

1 Biogas Energy Potential in Florida Ann C. Wilkie Soil and Water Science Department University of Florida – IFAS Renewable Energy Workshop Florida Public Service Commission January 19, 2007

2 Electrical and/or thermal energy Biofertilizer Organic wastes Anaerobic digestion Biogas Solar energy Animal husbandry Crop harvesting Industrial processing Human consumption Photosynthesis H2OH2O CO 2 Biogas Cycle Energy crops

3 ANAEROBIC DIGESTION The microbial degradation of organic compounds, in the absence of oxygen, to biogas – a mixture of: Methane (50 to 70%) CO 2 (30 to 50%) trace amounts of H 2, NH 3, and H 2 S.

4 COMPLEX ORGANIC MATTER SIMPLE ORGANICS ACETATE H 2 / CO 2 METHANE and CARBON DIOXIDE LOW ODOR EFFLUENT LIQUEFACTION PHASE GASIFICATION PHASE ACIDOGENSMETHANOGENS

5 FEEDSTOCKS Animal manures Industrial wastewaters Municipal wastewaters Municipal solid wastes Energy crops / crop residues

6 BENEFITS OF ANAEROBIC DIGESTION Renewable energy BOD/COD reduction Odor reduction Pathogen reduction Nutrient conservation Greenhouse gas reduction

7 BIOGAS – A BIOENERGY VECTOR Direct Utilization (Heat / Steam) Conversion to Bioelectricity (CHP) Natural Gas Pipeline Vehicular fuel Fuel Cells Methanol Biodiesel

8 Biogas as fuel

9 Water heater at UF-IFAS Dairy powered by manure biogas

10 Natural Gas Bus - Brisbane

11 BIOGAS PLANT CORE TECHNOLOGY

12 FERMENTATION DISTILLATION BIOGAS STILLAGE ANAEROBIC DIGESTION ETHANOL

13 Biomass Energy Crop

14 WATER SUNLIGHT Energy Crops Biogas Plant Biofertilizer CO 2 WATER Methane Green Grass to Green Gas

15 Biomass or Waste Source Energy Production Natural Gas Equivalent (billion cu ft) Electricity Equivalent (Megawatts) Municipal wastewater Dairy manure Poultry manure MSW Energy crops Total Time to Implement: 1 Immediate (1-5 years), 2 Near term (5-7 years) Florida Biogas Potential from Selected Sources: Annual Estimates

16 Biogas is a sustainable energy solution that is: Renewable Carbon dioxide neutral Locally based thereby protecting the environment, creating jobs and strengthening local economies.

17 Biogas power provides … Energy independence – Renewable natural gas Energy reliability – Based on locally based feedstocks

18 IMPLEMENTATION ISSUES Net metering Surplus sales agreement Standby charge Rate schedule Interconnection

19 Biogas Energy Potential in Florida Ann C. Wilkie Soil and Water Science Department University of Florida – IFAS Renewable Energy Workshop Florida Public Service Commission January 19, 2007


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