Journal
BIORESOURCE TECHNOLOGY
Volume 248, Issue -, Pages 156-173Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.06.070
Keywords
Food waste; Organic fraction of municipal solid waste; Life cycle assessment; Anaerobic digestion; Global warming
Funding
- RMIT University
- Australian Commonwealth Scientific and Industrial Research Organisation (CSIRO) - OCE fund
- Australian government postgraduate award
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Municipal food waste (FW) represents 35-45% of household residual waste in Australia, with the nation generating 1.6 Tg annually. It is estimated that 91% of this FW ends up in landfill. This study used life cycle assessment to determine and compare the environmental impact of seven contemporary FW management systems for two real-life jurisdictions; incorporating the complete waste service and expanding the system to include inert and garden waste. Although, no system exhibited a best ranking across all impact categories, FW digestion based systems were all revealed to have a lower global warming potential than composting and landfilling systems. Mechanical biological treatment, anaerobic co-digestion, and home composting all demonstrated the lowest environmental impacts for two or more of the environmental impact categories assessed. The assessment included market and technological specific variables and uncertainties providing a framework for robust decision making at a municipality level. Crown Copyright (C) 2017 Published by Elsevier Ltd. All rights reserved.
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