"This book is one of the few that provides a practical perspective on the recovery of energy through anaerobic digestion using food waste, farmyard manure and energy crops as a feedstock. It covers facilities that handle just a tonne a day through to much larger 50,000 tonnes per year operations. It provides authoritative information on the whole digestion process from input to output, placing this within the relevant legislative framework. It offers an extremely useful section devoted to developing markets for the digestate end-product and it is an essential guidebook for all those contemplating the application of anaerobic digestion for energy recovery." - Dr Nigel Horan, School of Civil Engineering, University of Leeds, and Chairman Aqua Enviro Ltd