1. DIGESTATE MANAGEMENT
– USES OF DIGESTATE
#UKADBiogas @adbioresources
CHAIR:
DR NICK CHEFFINS, PEAKHILL ASSOCIATES
PANEL:
DR MARY DIMAMBRO, CAMBRIDGE ECO
DR DAVID TOMPKINS, AQUA ENVIRO
DR QUINTON FIVELMAN, ADFERTECH
3. www.aquaenviro.co.uk
Overview
1. Inherent fertiliser value is modest…
a. …and even worse in the autumn
b. …although digestate can be more than
the sum of its parts
2. Waste-derived digestates do not so easily
lend themselves to ‘upgrading’
3. Can operators afford not to upgrade in the
long term?
10. www.aquaenviro.co.uk
Withers et al. (2014) Feed the Crop Not the Soil:
Rethinking Phosphorus Management in the Food
Chain. Environ. Sci. Technol. 48: 6523−6530
http://www.telfordhomes.plc.uk/cityscape/gallery.cfm
http://www.lawnsmith.co.uk
11. www.aquaenviro.co.uk
In conclusion
1. Digestate has inherent nutrient value
a. This won’t cover cost of recovery
2. Fibre digestate has greater inherent value
a. But separation can be challenging
3. To guarantee a market you may need to
upgrade digestate anyway
13. DIGESTATE MANAGEMENT
– USES OF DIGESTATE
#UKADBiogas @adbioresources
CHAIR:
DR NICK CHEFFINS, PEAKHILL ASSOCIATES
PANEL:
DR MARY DIMAMBRO, CAMBRIDGE ECO
DR DAVID TOMPKINS, AQUA ENVIRO
DR QUINTON FIVELMAN, ADFERTECH