Working Paper Article Version 2 This version is not peer-reviewed

Sorting Analysis of Household Food Waste - Development of a Methodology Compatible with the Aims of SDG12.3

Version 1 : Received: 12 June 2021 / Approved: 15 June 2021 / Online: 15 June 2021 (11:54:09 CEST)
Version 2 : Received: 15 July 2021 / Approved: 15 July 2021 / Online: 15 July 2021 (15:38:01 CEST)

How to cite: Okayama, T.; Watanabe, K.; Yamakawa, H. Sorting Analysis of Household Food Waste - Development of a Methodology Compatible with the Aims of SDG12.3. Preprints 2021, 2021060401 Okayama, T.; Watanabe, K.; Yamakawa, H. Sorting Analysis of Household Food Waste - Development of a Methodology Compatible with the Aims of SDG12.3. Preprints 2021, 2021060401

Abstract

Target 12.3 of the United Nations Sustainable Development Goals (SDGs) calls for halving per capita global food waste at the retail and consumer levels, by 2030. The Food Waste Index is suggested as a methodology for grasping the situation. This paper focuses on the consumer level (household food waste). We argue that in order for generating useful information for devising and implementing effective measures for reducing food waste, it should be measured at Level 3 of the Food Waste Index, based on sorting analysis of generated waste, making a distinction between avoidable and non-avoidable food waste. Furthermore, a breakdown by sub-categories that reflect the flow of food in the household could help identify target behaviours. We have developed a categorisation scheme that is internationally agreeable and adoptable, and 1) generates useful information for policy-making and for tackling with reduction of food waste, 2) makes clear the concept of avoidable food waste, and 3) is practical and does not overcomplicate the work of grasping the situation of food wastage. Results of workshops regarding this scheme suggest that the scheme satisfies the criteria. This scheme has been applied to a few sorting analyses of household food waste in Japan, and their results are compared.

Subject Areas

Food waste index; Household food waste; Waste characterisation; Waste sorting analysis; Avoidable food waste; Preparation residues; SDG Target 12.3; Methodology development; Assessment of current situation

Comments (1)

Comment 1
Received: 15 July 2021
Commenter: Kohei Watanabe
Commenter's Conflict of Interests: Author
Comment: revision responding to reviewers' comments and suggestions
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