Determination of the biochemical methane potential of food waste after aerobic storage and aeration pretreatment

Food waste represents a relevant fraction of municipal solid organic waste, and anaerobic digestion can be an eco‐friendly alternative for sustainable management in a circular economy framework. One of the challenges to the implementation of anaerobic digestion is the availability of easily degradab...

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Published inBiofuels, bioproducts and biorefining Vol. 16; no. 6; pp. 1733 - 1743
Main Authors Oliveira, Bruna Patrícia de, Sganzerla, William Gustavo, Léo, Patricia, Forster‐Carneiro, Tânia, Martins, Gilberto
Format Journal Article
LanguageEnglish
Published Chichester, UK John Wiley & Sons, Ltd 01.11.2022
Wiley Subscription Services, Inc
Subjects
Aeration
Anaerobic digestion
Anaerobic treatment
bioenergy
biogas
Buswell model
circular economy
Digestion
energy
Food
Food waste
Foods
Leachates
Methane
Organic wastes
Pretreatment
Refuse as fuel
Solid wastes
Storage
Substrates
Sustainability management
VDI 4630
Volatile solids
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Summary:Food waste represents a relevant fraction of municipal solid organic waste, and anaerobic digestion can be an eco‐friendly alternative for sustainable management in a circular economy framework. One of the challenges to the implementation of anaerobic digestion is the availability of easily degradable compounds in the substrate, which can be solved by the application of pretreatment to increase methane production. In this study, the influence of aerobic storage time and forced continuous aeration pretreatment on the biochemical methane potential of food waste was evaluated. The results demonstrate an increase in the methane production concerning the total volatile solids (TVS) of food waste stored for 7 days (425 NmL CH4 g−1 TVS) compared with fresh samples without pretreatment (375 NmL CH4 g−1 TVS). The adoption of forced and continuous aeration pretreatment on food waste for 4 days produced 456 NmL CH4 g−1 TVS for the leachate, 1.22‐fold higher than that for the food waste without storage. In conclusion, the application of aeration pretreatment previous to anaerobic digestion can be an alternative to increase the methane potential from food waste. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd.
ISSN:1932-104X
1932-1031
DOI:10.1002/bbb.2414