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Renewable energy from waste water

Renewable energy from waste water. Dr John Andresen. Heriot - Watt University September 9th, 2014. Research interests. Development and design of sustainable processes on the interface between water and energy. Renewable energy from waste water. Biogas production and clean-up.

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Renewable energy from waste water

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  1. Renewable energy from waste water Dr John Andresen Heriot-Watt University September 9th, 2014

  2. Research interests • Development and design of sustainable processes on the interface between water and energy. • Renewable energy from waste water. • Biogas production and clean-up. • Plastic recycling into petrochemicals • Biomass to liquids. • Ethanol from MSW.

  3. The Problem - Wastewater issues • Wastewaters contain energy in form of biodegradable organic matter – high Chemical Oxygen Demand (COD) • 1 m3 of domesticwastewater (100-500 mg/L of COD) contains 2 kWh of equivalent energy • Annual domestic, animal and food processing wastewaters are estimated to contain a total of 6,400 GWh • The water companies spend money and release CO2 in the atmosphere to remove this energy • It is simpler and free cost try to recover the energy itself

  4. Microbial Fuel Cell (MFC) CO2 e- e- H2 IN OUT CATHODE H2 ANODE CO2 Bacteria H+

  5. MFC case study 2,000 mg/L COD 630 m3/day 1.3 GWh of energy in water annually wasted COD reduced to 300-600 mg/L within 24 hours 10-30 % electricity 130-390 MWh annually 320-390 tons COD reduction annually

  6. MFC: Lab-scale to pilot The aim of this work is to investigate novel Microbial Fuel Cells (MFCs) designs for removal of organics from food processing wastewater and assess how much energy can be recover from the system in terms of electricity, hydrogen or other valuable products, with the overall aim to clean wastewater sustainably. J.M. Andresen and L. Porcu, “Novel Anode and Cathode for Biofuel Cells”, British Patent, Application date: 26/04/2011, Application Number: 1106929.1

  7. Collaboration opportunities • Innovative waste water solutions. • Food and Drink. • Irrigation • Renewable energy. • Biogas. • Plastic • MSW. • J.Andresen@hw.ac.uk

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