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      A Review on the Challenges and Choices for Food Waste Valorization: Environmental and Economic Impacts

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          Abstract

          Valorization of food waste (FW) is instrumental for reducing the environmental and economic burden of FW and transitioning to a circular economy. The FW valorization process has widely been studied to produce various end-use products and summarize them; however, their economic, environmental, and social aspects are limited. This study synthesizes some of the valorization methods used for FW management and produces value-added products for various applications, and also discusses the technological advances and their environmental, economic, and social aspects. Globally, 1.3 billion tonnes of edible food is lost or wasted each year, during which about 3.3 billion tonnes of greenhouse gas is emitted. The environmental (−347 to 2969 kg CO 2 equiv/tonne FW) and economic (−100 to $138/tonne FW) impacts of FW depend on the multiple parameters of food chains and waste management systems. Although enormous efforts are underway to reduce FW as well as valorize unavoidable FW to reduce environmental and economic loss, it seems the transdisciplinary approach/initiative would be essential to minimize FW as well as abate the environmental impacts of FW. A joint effort from stakeholders is the key to reducing FW and the efficient and effective valorization of FW to improve its sustainability. However, any initiative in reducing food waste should consider a broader sustainability check to avoid risks to investment and the environment.

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          Valorization of biomass: deriving more value from waste.

          Most of the carbon-based compounds currently manufactured by the chemical industry are derived from petroleum. The rising cost and dwindling supply of oil have been focusing attention on possible routes to making chemicals, fuels, and solvents from biomass instead. In this context, many recent studies have assessed the relative merits of applying different dedicated crops to chemical production. Here, we highlight the opportunities for diverting existing residual biomass--the by-products of present agricultural and food-processing streams--to this end.
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            Food waste biorefinery: Sustainable strategy for circular bioeconomy

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              Reviewing the anaerobic digestion of food waste for biogas production

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                Author and article information

                Journal
                ACS Environ Au
                ACS Environ Au
                vg
                aeacc4
                ACS Environmental Au
                American Chemical Society
                2694-2518
                20 January 2023
                15 March 2023
                : 3
                : 2
                : 58-75
                Affiliations
                []School of Engineering, Thornbrough Building, University of Guelph , 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
                []Bioproducts Discovery and Development Centre, Department of Plant Agriculture, Crop Science Building, University of Guelph , 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
                [§ ]Ontario Ministry of Agriculture, Food and Rural Affairs , Guelph, Ontario N1G 4Y2, Canada
                Author notes
                [* ]Email: mmisra@ 123456uoguelph.ca (M.M.).
                [* ]Email: mohanty@ 123456uoguelph.ca (A.K.M.).
                Author information
                https://orcid.org/0000-0002-1079-2481
                https://orcid.org/0000-0003-2179-7699
                Article
                10.1021/acsenvironau.2c00050
                10021016
                36941850
                847242ca-6359-42be-a70d-a3410f0c84c6
                © 2023 The Authors. Published by American Chemical Society

                Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works ( https://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                : 29 August 2022
                : 09 December 2022
                : 08 December 2022
                Funding
                Funded by: Natural Sciences and Engineering Research Council of Canada, doi 10.13039/501100000038;
                Award ID: 460788
                Funded by: Ontario Ministry of Economic Development, Job Creation and Trade, doi 10.13039/501100013569;
                Award ID: 054345
                Funded by: Ontario Ministry of Economic Development, Job Creation and Trade, doi 10.13039/501100013569;
                Award ID: 053970
                Funded by: Ontario Ministry of Agriculture, Food and Rural Affairs, doi 10.13039/501100000094;
                Award ID: 055217
                Funded by: Ontario Ministry of Agriculture, Food and Rural Affairs, doi 10.13039/501100000094;
                Award ID: 030736
                Funded by: Agriculture and Agri-Food Canada, doi 10.13039/501100000040;
                Award ID: 800148
                Funded by: Agriculture and Agri-Food Canada, doi 10.13039/501100000040;
                Award ID: 054449
                Funded by: Agriculture and Agri-Food Canada, doi 10.13039/501100000040;
                Award ID: 054015
                Categories
                Review
                Custom metadata
                vg2c00050
                vg2c00050

                food waste,valorization,value-added products,life cycle assessment,social,economic and environmental impacts,circular economy,sustainability

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