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Processes for the valorization of food and agricultural wastes to value-added products: recent practices and perspectives

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Abstract

Biorefineries contribute to a circular bioeconomy using renewable feedstock to produce commodity and specialty chemicals as an alternative to petroleum chemicals. Using waste streams such as food waste and agricultural waste as a feedstock for biorefineries is a promising approach for obtaining value-added products in an economically feasible and sustainable way. The conversion of biomass to chemicals offers diverse opportunities but poses new technological challenges. This paper aims to review the current state of food and agricultural waste valorisation by giving a brief technical overview, summarizing the current state of the bio-based market, and identifying the current barriers to scaling-up biorefineries. Utilizing lignocellulosic biomass in biorefineries calls for pre-treatment due to its complex structure, in which biomass is broken into monosaccharides, building blocks of value-added products. Different state of the art technologies for lignocellulose pre-treatment is introduced in the review followed by a brief explanation of the role of the hydrolysis and fermentation. The economic aspect of chemical production from biomass waste at an industrial scale is also introduced by giving an overview of some recent techno-economic studies.

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Acknowledgements

The authors thank the European Commission and the Erasmus+ International Master of Science in Environmental Technology and Engineering (IMETE) for financing and supporting the M.Sc. programme at UCT Prague (Czech Republic), IHE Delft (The Netherlands), and Ghent University (Belgium).

Funding

The research was funded by ERASMUS + International Master of Science in Environmental Technology and Engineering (IMETE) to pursue the MSc programme (2017–1957/001–001-EMJMD).

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  1. Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2601 DA, Delft, The Netherlands

    Anna Kover, Doris Kraljić, Rose Marinaro & Eldon R. Rene

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Kover, A., Kraljić, D., Marinaro, R. et al. Processes for the valorization of food and agricultural wastes to value-added products: recent practices and perspectives. Syst Microbiol and Biomanuf 2, 50–66 (2022). https://doi.org/10.1007/s43393-021-00042-y

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