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Key Properties of Drinking Water Treatment Residuals for their Effective Reuse as Phosphate Adsorbents

2025-06-18Artigo científico Acesso aberto
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dc.contributor.authorSousa, Diogo
dc.contributor.authorBernardo, Maria
dc.contributor.authorMatos, Inês
dc.contributor.authorFonseca, Isabel
dc.contributor.authorDias, Rita
dc.contributor.authorMaurício, Rita
dc.contributor.institutionMARE - Centro de Ciências do Mar e do Ambiente
dc.contributor.institutionDQ - Departamento de Química
dc.contributor.institutionLAQV@REQUIMTE
dc.contributor.pblSpringer Science and Business Media Deutschland GmbH
dc.date.accessioned2025-07-31T21:19:40Z
dc.date.available2025-07-31T21:19:40Z
dc.date.issued2025-06-18
dc.descriptionFunding Information: Open access funding provided by FCT|FCCN (b-on). The authors acknowledge and thank the support given to the Fundação para a Ciência e a Tecnologia (FCT, Portugal), through a PhD grant by FCT for Diogo Sousa (2022.11808.BD https://doi.org/10.54499/2022.11808.BD) and through the strategic projects UIDB/04292/2020 (https://doi.org/10.54499/UIDB/04292/2020) and UIDP/04292/2020 (https://doi.org/10.54499/UIDP/04292/2020) granted to MARE - Marine and Environmental Sciences Centre, and the project LA/P/0069/2020 (https://doi.org/10.54499/LA/P/0069/2020) granted to the Associate Laboratory ARNET - Aquatic Research Network. This work received support and help from FCT/MCTES (LA/P/0008/2020 DOI 10.54499/LA/P/0008/2020, UIDP/50006/2020 DOI10.54499/UIDP/50006/2020 and UIDB/50006/2020 DOI 10.54499/UIDB/50006/2020), through national funds. Publisher Copyright: © The Author(s) 2025.
dc.description.abstractDrinking Water Treatment Residuals (DWTR) are the sludge by-products produced in the drinking water treatment plants, representing a significant amount of the operational costs. Since the DWTR properties depend on the treatment system and the raw water characteristics, it is crucial to understand the key parameters to streamline the decision-making process regarding DWTR reuse. This study aimed to assess the key parameters of DWTR as an adsorbent material of phosphate (). To this end, seven different DWTR were subjected to physical and chemical characterization. Adsorption tests were carried out under neutral pH. Following a comprehensive analysis of the correlation between the quantitative properties and the adsorption capacity, a reliable predictor has been determined. This predictor will inform the construction of a model that will accurately predict the adsorption capacity. The characterization showed differences among the DWTR, supporting the influence of the DWTR properties. Six of the DWTR were able to adsorb, with adsorption capacities ranging between 6.7 and 44.1 mg/g. Contrary to expectations, the aluminium content was not the key parameter for the adsorption process. Instead, the crucial factor was the pH at the point of zero charge (pHPZC). Based on this relationship, a statistical model was built, using pHPZC as a predictor of adsorption capacity (p-value < 0.0001, R2 = 0.735). The use of pHPZC as a predictor of the adsorption capacity of DWTR enables the reduction of the number and the costs of analytical determinations and streamlines the decision-making process for stakeholders regarding DWTR reuse.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent16
dc.format.extent1409450
dc.identifier.doi10.1007/s40710-025-00780-4
dc.identifier.issn2198-7491
dc.identifier.otherPURE: 120761376
dc.identifier.otherPURE UUID: 373ff959-e6af-4294-ae72-8b6a49223286
dc.identifier.otherScopus: 105008698391
dc.identifier.otherWOS: 001512495500001
dc.identifier.otherORCID: /0000-0002-5823-6636/work/189008404
dc.identifier.urihttp://hdl.handle.net/10362/185843
dc.identifier.urlhttps://www.scopus.com/pages/publications/105008698391
dc.identifier.urlhttps://www.webofscience.com/wos/woscc/full-record/WOS:001512495500001
dc.language.isoeng
dc.peerreviewedyes
dc.relationinfo:eu-repo/grantAgreement/FCT/OE/2022.11808.BD/PT
dc.relationUPSludge – Upcycling de Lamas de Estações de Tratamento de Água de abastecimento – A barreira adsorvente low-cost para a remoção de Poluentes de Preocupação Emergente em águas residuais
dc.relationinfo:eu-repo/grantAgreement/FCT/Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017%2F2018) - Financiamento Programático/UIDP%2F04292%2F2020/PT
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dc.subjectDrinking water treatment sludge reuse
dc.subjectPhosphate adsorption
dc.subjectSludge characterization
dc.subjectWater treatment
dc.subjectEnvironmental Engineering
dc.subjectWater Science and Technology
dc.subjectPollution
dc.subjectManagement, Monitoring, Policy and Law
dc.subjectHealth, Toxicology and Mutagenesis
dc.titleKey Properties of Drinking Water Treatment Residuals for their Effective Reuse as Phosphate Adsorbentsen
dc.typejournal article
degois.publication.firstPage1
degois.publication.lastPage16
degois.publication.titleEnvironmental Processes
degois.publication.volume12
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oaire.awardTitleUPSludge – Upcycling de Lamas de Estações de Tratamento de Água de abastecimento – A barreira adsorvente low-cost para a remoção de Poluentes de Preocupação Emergente em águas residuais
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