초록
<P><B>Abstract</B></P> <P>In this study, an integrated engineering system was developed for bioenergy production from food waste pretreated with a cost-effective and highly active enzyme mixture, namely fungal mash which was also in-situ produced from food waste. Under the optimized conditions, 141.5g/L of glucose was obtained with 67.5% of total solid reduction after hydrolysis of food waste by fungal mash, while 71.8g/L of bioethanol was produced from subsequent glucose fermentation. The remaining hydrolysis residue was further anaerobically digested for biomethane production with 22.8% of total solid reduction. As the result, about 90% of total solid reduction of food waste was achieved in the integrated engineering system with the outputs of bio-renewable energy in the forms of bioethanol and biomethane. The cost-benefit analysis clearly suggests that the bioenergy production from food waste in the proposed integrated engineering system is technically feasible and economically viable.</P> <P><B>Highlights</B></P> <P> <UL> <LI> An integrated system was developed for bioenergy production from food waste. </LI> <LI> Fungal mash promotes the food waste hydrolysis compared with commercial enzyme. </LI> <LI> 235g of ethanol and 82L of methane were produced from 1kg of dry food waste. </LI> <LI> About 90% of total solid reduction was achieved in the proposed integrated system. </LI> <LI> Engineering feasibility and economic viability of the integrated system was clarified. </LI> </UL> </P>