Quality management of digestate from biogas plants used as fertiliser

May 2012

This brochure is focused on quality management of liquid digestate from biogas plants where animal manures and slurries, crop residues, organic wastes and residues from agri-food processing industries and from other industrial processes are the principal feedstocks. The aim is to provide guidance on best practices for the production of high quality digestate, which is suitable for application as a crop fertiliser and with a positive environmental impact and a high degree of safety for human and animal health. The information contained in this brochure should be of interest to biogas and digestate producers, to farmers who use digestate as fertiliser, to industries which supply organic wastes to biogas plants as well as to policy makers, regulators and consumers.