Biogas potential and digestion rates of food wastes in anaerobic digestion systems

Marsh, Richard; Steer, Julian; Griffiths, Tony; Williams, Keith
March 2008
Proceedings of the International Conference on Waste Technology ;2008, p184
Conference Proceeding
Anaerobic digestion is a waste treatment technology that has been used to process wastewater sludges and organic wastes for almost 150 years. This technology, although well understood for slurry-like materials is increasing in application for highsolids content food wastes such as kitchen and catering residues. Particular factors of interest include the optimisation of biogas production and the digestion rates of different waste materials, depending on the availability of the organic carbon. In this study a number of food residues were digested in a continuous-operation laboratory experiment and the relative performance of each material examined. Gas production rates and gas compositions were monitored and logged, which were in turn used to calculate biogas potential, performance and suitability of each material in anaerobic digestion systems.


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