Effectiveness of Collaboration of Adjacent Municipalities in Adjustment of Supply and Demand of Liquid Fertilizer Produced from Anaerobic Digestion of Biomass Waste

Abstract

 In this study, we examined supply and demand of liquid fertilizer produced from anaerobic digestion of biomass waste. Supply/demand ratio at the municipal level in Japan was estimated in two cases recycling biomass from livestock waste or municipal waste (sludge and kitchen garbage). As a result, the prefecture matching supply and demand of the fertilizer varied according to two cases.
 Collaboration of adjacent municipalities was an important factor for promote biomass recycling. Thus, the appropriate collaboration area was identified by the adjustment of supply and demand of liquid fertilizer. The effectiveness of the collaboration in Saga was evaluated quantitatively and visualized by Geographic Information System. This identification of appropriate collaboration area was expected as a method that local community realized a sound material-cycle society.