Fig. 4: Excess phosphorus availability remaining after digestate land application.
From: Integrating regional transportation and ecological factors into anaerobic digestion siting decisions
Values in this figure represent the net phosphorus (P) availability, accounting for phosphorus contained in wasted food (WF) and manure feedstocks within the sourcing radius around potential anaerobic digester locations, less the phosphorus acceptance capacities on fields within a transportation radius of a 10 km and b 20 km of each potential digester location. Positive values (blue colors) indicate excess phosphorus, while negative values (green colors) indicate remaining capacity. Two siting extremes are shown: the black star represents the potential anaerobic digester location where the largest amount of wasted food feedstock could be sourced (Max WF Supply), and the black triangle represents the potential digester location that would result in maximum remaining field capacity for accepting phosphorus (Max P Capacity Remaining).
