Fostering the valorization of organic wastes into carboxylates by a computer-aided design tool

Autor: Mateo Saavedra del Oso, Alberte Regueira, Almudena Hospido, Miguel Mauricio-Iglesias
Přispěvatelé: Universidade de Santiago de Compostela. Departamento de Enxeñaría Química, Universidade de Santiago de Compostela. Instituto Interdisciplinar de Tecnoloxías Ambientais (CRETUS)
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Elsevier
Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname
WASTE MANAGEMENT
ISSN: 0956-053X
1879-2456
Popis: The carboxylate platform has the potential to constitute an outstanding opportunity for converting organic wastes into chemicals and other value-added products within a circular economy framework. However, its development is still hampered by technological and financial constraints due to difficulties at forecasting the carboxylates yields by different wastes. This work provides a framework that can be the key to foster circular economy and bridge the development risks, allowing early-stage evaluation of process performance. This framework, which is implemented as a computer-aided design tool, is comprised by: (i) a library of substrates including their characterization and appropriate kinetic parameter selection, (ii) an integral kinetic and stoichiometric model which solves both identified gaps regarding the disintegration mechanisms and the acidogenic stoichiometry variability in the anaerobic mono and cofermentation of complex organic wastes, and (iii) a set of indicators to interpret simulation results and assist the decision making; and presents a showcase of applications supported by two case studies. These case studies show that the optimal conditions to steer VFA spectrum towards odd-chain VFA in MCF of regrind pasta are neutral pH (6.5–7) and a relatively low HRT (3–4 days), while cofermentation of tuna canning wastewater and regrind pasta follows interactive mechanisms that cannot be captured by a “naïve approach”, i.e. by adding up the individual contributions. Finally, it is discussed how value chain actors with different interests can benefit from the proposed tool: identifying technical, economic, and environmental bottlenecks, and proposing innovative solutions prior to costly lab research and piloting This work has been financially supported by the USABLE Packaging project (Call: H2020-BBI-JTI-2018, EU ID: 836884). A. Regueira would like to acknowledge the support of the Xunta de Galicia through a postdoctoral fellowship (ED481B-2021-012). The authors belong to a Galician Competitive Research Group (GRC ED431C 2021/37). The programme is co-funded by FEDER (UE) SI
Databáze: OpenAIRE
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