2026-04-27T20:12:39Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/490302025-01-20T07:34:56Zcom_10324_35294com_10324_952com_10324_894col_10324_35295

Fernández Delgado, Marina Amo Mateos, Esther Del García Cubero, María Teresa Coca Sanz, Mónica Lucas Yagüe, Susana 2021-10-13T10:05:03Z 2021-10-13T10:05:03Z 2021 Journal of Chemical Technology & Biotechnology, 2022, vol. 97, n. 1, p. 167–178. 0268-2575 https://uvadoc.uva.es/handle/10324/49030 10.1002/jctb.6926 Journal of Chemical Technology & Biotechnology 1097-4660 Producción Científica The present work investigates the use of municipal mixed waste compost (MMWC) residue for phosphorus(P) recycling from a technical, economic, and environmental perspective. The study aims to obtain liquid extracts rich in P from MMWCwith a low heavy metals content, suitable for their subsequent precipitation in the struvite form. The effect of inorganic (sulfuric/nitric)and organic (oxalic/citric) acids at different molarities and temperatures was studied using technical analysis. The preliminary eco-nomic analysis allows the costs of the extraction section for the optimal extraction strategies to be estimated and compared.RESULTS: Based on the multilevel factorial design, the P extraction optimization shows that sulfuric acid 0.5 M and 30 °C pro-vided the highest P extraction yield, 94.2%. However, oxalic acid 0.1 M and 30 °C is the best choice to maximize the P extractionyield, while also minimizing the heavy metals concentration, reaching a P recovery of 2.5 g P/kg. The extraction kinetics for alltested acids were satisfactorily modelled using a second-order model (r2> 0.99). The preliminary economic analysis, estimatedfor a P extraction pilot plant of 100 kg h−1of MMWC, noted that sulfuric acid 0.5 M provided the lowest total investment cost(130 000 €) and a minimum sale price of theoretical struvite at 4.96 €/kg.CONCLUSION: MMWC is a promising raw material for P recycling as fertilizer due to an appreciable P concentration (7 g P/kg),which can be used together with other residues rich in P to obtain an economical and sustainable extraction process. Programme of Cooperation INTERREG V-A Spain-Portugal (POCTEP) 2014-2020 and EU-FEDER (project 0119_VALORCOMP_2_P) Junta de Castilla y León - Fondo Europeo de Desarrollo Regional (project UIC 129, CLU2017-2109) Junta de Castilla y León ( project E-47-2019-0114592) application/pdf eng Wiley info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ © 2021 The Authors Attribution-NonCommercial-NoDerivatives 4.0 Internacional Municipal mixed waste compost Phosphorus recovery Kinetic study Organic waste recycling Circular economy 23 Química 33 Ciencias Tecnológicas Phosphorus recovery from organic waste for its agronomic valorization: technical and economic evaluation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://onlinelibrary.wiley.com/doi/10.1002/jctb.6926 SI