title: A holistic approach for food waste management towards zero-solid disposal and energy/resource recovery.
abstract: This study developed a holistic approach which was based on the ultra-fast hydrolysis of food waste with the fungal mash rich in various hydrolytic enzymes produced in situ from food waste as well. After the 8-h hydrolytic treatment, the solid residue and liquor were separated. It was found that the produced solid residue can meet all the requirements for biofertilizer in terms of NPK and heavy metal contents, while the separated liquor with high soluble organics concentration was further subject to anaerobic digestion for enhanced biomethane production. The results showed that 0.41kg of biofertilizer with a moisture content of 76.9% and 54.4L of biomethane could be produced from 1kg of food waste. As such, it is expected that this study may lead to the paradigm shift in food waste management with the ultimate target of zero-solid discharge.
authors.affiliation: Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore.
authors.forename: Yingqun
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore.
authors.forename: Yao
authors.initials: Y
authors.lastname: Yin
authors.affiliation: Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore. Electronic address: cyliu@ntu.edu.sg.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000693:Anaerobiosis; D004798:Enzymes / Q000378:metabolism; D005308:Fertilizers; D005502:Food; D006868:Hydrolysis; D019216:Metals, Heavy / Q000032:analysis; D008697:Methane / Q000096:biosynthesis; D012037:Refuse Disposal / Q000379:methods; D018505:Waste Management / Q000379:methods*
chemical_list: D004798:Enzymes; D005308:Fertilizers; D019216:Metals, Heavy; D008697:Methane
keywords: Anaerobic digestion; Fertilizer; Food waste; Fungal mash; Zero-solid disposal