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Pyrolysis water addition on the anaerobic co-digestion of food waste and animal slurries. Dr Marie Kirby 1 Mr P. Moran 1 , Dr R. Wilkinson 1 and Prof A. Hornung 2 1 Harper Adams University College, Newport, Shropshire 2 European Bioenergy Research Institute, Aston University, Birmingham .
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Pyrolysis water addition on the anaerobic co-digestion of food waste and animal slurries Dr Marie Kirby1 Mr P. Moran1, Dr R. Wilkinson1 and Prof A. Hornung2 1 Harper Adams University College, Newport, Shropshire 2 European Bioenergy Research Institute, Aston University, Birmingham
Objectives of the research project… To determine... • The effect of different sources of pyrolysis waters upon the anaerobic digestion process • The effect of incorporation level of pyrolysis waters upon the anaerobic digestion process Analyses to be undertaken - analysis of biogas yield, biogas composition and digestate composition
Experimental design... • 4 x 4 factorial designed experiment, operated at 40°C • Type of pyrolysis water – produced from wood pellets, miscanthus, dairy fibre solids and compost material • Incorporation level – control (0g/l), 30g/l, 60g/l and 90g/l of pyrolysis water in addition to the commercial feed substrate (food waste and mixed animal slurries)
What is anaerobic digestion? • Four main bacterial groups • breakdown organic material • in an environment without • oxygen and produce • biogas
Results to date… • Preliminary experiment • Identified the preferred inclusion levels of pyrolysis waters • Main experiment • One replicate • Each type of pyrolysis water digested effectively • Inclusion level had an effect
Acknowledgements… Thank you for listening Any questions?