Calcium-rich Sargassum derived adsorbents for phosphorus removal from synthetic urine: A step toward a circular economy

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dc.contributor.affiliationPérez S., Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Laboratorio Nacional de Proyección Térmica (CENAPROT), Libramiento Norponiente 2000 Fracc. Real de Juriquilla, Querétaro, 76230, Mexico
dc.contributor.affiliationRamírez-Muñoz A., Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Laboratorio Nacional de Proyección Térmica (CENAPROT), Libramiento Norponiente 2000 Fracc. Real de Juriquilla, Querétaro, 76230, Mexico, Grupo de Investigación Materiales con Impacto (Mat&mpac), Instituto de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín, 050026, Colombia
dc.contributor.affiliationDíaz-Real J.A., Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ), Parque Tecnológico Querétaro, s/n, Sanfandila, C.P. 76703, Pedro Escobedo, Querétaro, Mexico
dc.contributor.affiliationFlórez E., Grupo de Investigación Materiales con Impacto (Mat&mpac), Instituto de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín, 050026, Colombia
dc.contributor.affiliationAcelas N., Grupo de Investigación Materiales con Impacto (Mat&mpac), Instituto de Ciencias Básicas, Universidad de Medellín, Carrera 87 No. 30-65, Medellín, 050026, Colombia
dc.contributor.affiliationHernández-Navarro C., División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México en Roque, Carretera Juventino Rosas - Celaya Km.8, Guanajuato, Celaya, 38110, Mexico
dc.contributor.affiliationGonzález-Hernández J., Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Laboratorio Nacional de Proyección Térmica (CENAPROT), Libramiento Norponiente 2000 Fracc. Real de Juriquilla, Querétaro, 76230, Mexico
dc.contributor.affiliationMuñoz-Saldaña J., Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Laboratorio Nacional de Proyección Térmica (CENAPROT), Libramiento Norponiente 2000 Fracc. Real de Juriquilla, Querétaro, 76230, Mexico
dc.contributor.authorPérez S.
dc.contributor.authorRamírez-Muñoz A.
dc.contributor.authorDíaz-Real J.A.
dc.contributor.authorFlórez E.
dc.contributor.authorAcelas N.
dc.contributor.authorHernández-Navarro C.
dc.contributor.authorGonzález-Hernández J.
dc.contributor.authorMuñoz-Saldaña J.
dc.date.accessioned2025-09-08T14:23:28Z
dc.date.available2025-09-08T14:23:28Z
dc.date.issued2025
dc.descriptionThe recurrent accumulation of pelagic Sargassum spp. along the coasts of Cancún and the Riviera Maya has become a pressing environmental and socio-economic concern. In this study, we investigate a sustainable valorization route for this invasive biomass by converting it into calcium-rich adsorbents through calcination at 800 °C (designated as CSgs) for phosphorus (P) recovery from synthetic urine (705.56 mg P/L). Batch adsorption experiments were conducted with adsorbent dosages ranging from 0.5 to 15 g/L. The materials were characterized by FTIR, XRD, and SEM. CSgs demonstrated high P recovery efficiencies (up to 97 %) and an adsorption capacity of 46 mg P/g at the highest dosage. Phosphorus removal occurred via precipitation as apatite (Ca5(PO4)3OH) at 15 g/L, and as brushite (CaHPO4•2H2O) at lower dosages (0.5–2.5 g/L). Langmuir isotherm modeling yielded maximum adsorption capacities (Qmax) of 293 ± 16 mg P/g at pH 6 (brushite) and 158 ± 6 mg P/g at pH 10 (apatite). The recovered P showed high agronomic potential, with 94–97 % solubility in 2 % formic acid and 14–17 % in water. A preliminary cost analysis estimated that, under simulated urine conditions, CSgs achieved 97 % phosphorus recovery with an adsorption capacity of 46 mg/g, at a total cost of 5.99 USD per 0.5 m3 treated, highlighting their economic feasibility for nutrient recovery applications. These findings support the development of decentralized nutrient recovery systems and promote circular economy strategies by transforming marine biomass waste into sustainable biofertilizers. © 2025 The Authors
dc.identifier.doi10.1016/j.biombioe.2025.108269
dc.identifier.instnameinstname:Universidad de Medellínspa
dc.identifier.issn9619534
dc.identifier.reponamereponame:Repositorio Institucional Universidad de Medellínspa
dc.identifier.repourlrepourl:https://repository.udem.edu.co/
dc.identifier.urihttps://hdl.handle.net/11407/9060
dc.language.isoeng
dc.publisher.facultyFacultad de Ciencias Básicasspa
dc.relation.citationvolume203
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-105012973306&doi=10.1016%2fj.biombioe.2025.108269&partnerID=40&md5=8a9beffde620386d36abe32f70c49967
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dc.rights.accesoRestricted access
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceBiomass and Bioenergy
dc.sourceBiomass Bioenergy
dc.sourceScopus
dc.subjectCalcium phosphate
dc.subjectCircular economy
dc.subjectFertilizer
dc.subjectPhosphorous
dc.subjectSargassum
dc.subjectUrine
dc.subjectAdsorbents
dc.subjectAdsorption
dc.subjectAdsorption isotherms
dc.subjectBody fluids
dc.subjectCost benefit analysis
dc.subjectEconomic analysis
dc.subjectNutrients
dc.subjectPhosphorus
dc.subjectRecovery
dc.subjectAdsorption capacities
dc.subjectBrushite
dc.subjectCircular economy
dc.subjectNutrient recovery
dc.subjectPhosphorous
dc.subjectPhosphorus removal
dc.subjectPressung
dc.subjectSargassa
dc.subjectSynthetic urine
dc.subjectUrine
dc.subjectCalcium phosphate
dc.titleCalcium-rich Sargassum derived adsorbents for phosphorus removal from synthetic urine: A step toward a circular economy
dc.typeArticle
dc.type.localArtículospa
dc.type.versioninfo:eu-repo/semantics/publishedVersion

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