Ecofriendly manure anaerobic digestion assisted by soluble bio-based substances obtained from anaerobic digestion, composting and chemical hydrolysis of urban bio-wastes. A step toward the integration of urban and agriculture waste management

摘要

BACKGROUNDRecently, a virtuous material cycle has been reported where soluble bio-based substances (SBO) obtained by anaerobic digestion, composting and chemical hydrolysis of urban wastes are recycled at 0.05-2% concentration to the anaerobic bioreactor to reduce the ammonia content in the fermentation digestate, with no adverse effect on biogas yield and composition. The aim of the present work was to assess whether the same SBO effect was real also for the anaerobic fermentation of farm manure.