Assessing Co-digestion Performance of Organic Fraction of Municipal Solid Waste

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Adopting waste-to-bioenergy technologies as waste management practice can provide dual benefits ofdiversion of waste from landfills and recovery of value-added resources. Thus, waste can be sustainablyutilized as a valuable resource rather than treated as waste. Anaerobic digestion, which is by far the mostwidely implemented waste-to-bioenergy technology for conversion of the organic fraction of municipal solidwaste to methane. However, anaerobic digestion of a single waste stream can sometimes be challenging due toinadequate nutrients and presence of toxic or inhibitory compounds in the feedstock. Co-digestion ofcomplementary waste streams is a promising engineering approach to overcome these difficulties via nutrientsbalance and dilution of toxicants, which ultimately enhance methane production. In collaboration with GHD,the proposed research will investigate co-digestion of food waste and sewage sludge for improving processstability and digestion performance.