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Surplus food donation: Effectiveness, carbon footprint, and rebound effect

Sundin, Niina and Eriksson, Mattias and Strid, Ingrid and Eriksson, Mattias (2022). Surplus food donation: Effectiveness, carbon footprint, and rebound effect. Resources, Conservation and Recycling. 181 , 106271
[Research article]

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Surplus food redistribution can be a way to relieve co-existing food insecurity and food waste. The food waste hierarchy ranks surplus food donations for human consumption as the next best strategy, when food waste cannot be prevented. However, the effectiveness of food donation in terms of the amount consumed, or food donation as a food waste management measure have rarely been assessed. The few studies conducted to date report substantial environmental savings, but the results may be sensitive to assumptions regarding substituted food. Rebound effects are also not included, but are likely to offset environmental savings from food donation. Therefore, this study investigated the effectiveness, carbon footprint, and rebound effect of a food donation system run by a charity in Sweden, and compared the results with those of anaerobic digestion. Multiple analytical methods were used, including material flow analysis, life cycle assessment, questionnaire, and 24-hour dietary recall. In the life cycle assessment, carbon footprint of substituted products were credited to the overall results using a system expansion. In addition, direct and indirect rebound effects associated with re-spending of substitution-related monetary savings were included. The results revealed a complex but effective network aimed at salvaging as much of the redistributed food as possible, with 78% of redistributed food eaten, but there was also a substantial rebound effect, offsetting 51% of potential carbon emissions savings from food donation. Nonetheless, the net result of food donation was almost twice the climate benefit of anaerobic digestion (-0.40 vs. -0.22 kg CO2e/FU), supporting the food waste hierarchy.

Authors/Creators:Sundin, Niina and Eriksson, Mattias and Strid, Ingrid and Eriksson, Mattias
Title:Surplus food donation: Effectiveness, carbon footprint, and rebound effect
Series Name/Journal:Resources, Conservation and Recycling
Year of publishing :2022
Article number:106271
Number of Pages:14
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 2 Engineering and Technology > 207 Environmental Engineering > Environmental Management
Keywords:Food waste management, Surplus food redistribution, Material flow analysis, Life cycle assessment, Climate impact, Food waste hierarchy
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Type of IDID
ID Code:27325
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Energy and Technology
Deposited By: SLUpub Connector
Deposited On:17 Mar 2022 08:25
Metadata Last Modified:12 Sep 2022 17:29

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