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Food waste management has been a global challenge with significant economic and environmental impacts. A community-based food waste treatment scheme for Glasgow, UK is proposed. The food waste was treated by small-scale wet, mesophilic anaerobic digestion. Biogas was combusted in a combined heat and power plant to generate heat and electricity for each community. 201.39 kWh of electricity and 246.09 kWh of thermal energy could be provided to local communities per tonne of food waste treated.A total of 52,762 tonnes of food waste were produced each year in the city. Net-present worth analysis was employed to evaluate the scheme's economic feasibility. The scheme's environmental impacts were evaluated using life cycle assessment. The entire system saved 92.27 kg CO2-eq. per tonne of food waste treated and had a net-present worth of £ 3.187 million with a carbon tax of 50 £ tonne -1 and a biogas yield of 190 m 3 tonne -1 .

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Sustainable waste management and climate change have been two of the major challenges worldwide. This study designed township-based bioenergy systems to treat solid waste in Glasgow based on anaerobic digestion and gasification technologies. The economic feasibility and environmental impacts (i.e. global warming potential, eutrophication potential, and acidification potential) were evaluated using Monte Carlo simulation-based cost-benefit analysis and life cycle assessment. It was found that township-based bioenergy systems could save over 300 kg of CO2 per tonne of municipal solid waste treated when biogenic carbon is excluded. It was shown that the proposed systems have profitability chances ranging from 68-98 %, when the sale of by-products (digestate and biochar) is considered. This study also CEPCI Chemical Engineering Plant Cost Index LWTR Leather-Wood-Textiles-Rubber CHP Combined heat and power MSW Municipal solid waste CT Carbon tax O&M Operation and maintenance EP Eutrophication potential OFMSW Organic fraction of municipal solid waste

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