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Graphene oxide and graphene oxide functionalized with silver nanoparticles as adsorbents of phosphates in waters. A comparative study

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dc.contributorCaravaca, Manuel
dc.contributorSoto Meca, Antonio
dc.contributorDe Francisco-Ortiz, Oscar
dc.contributorGimeno, Fernando
dc.contributor.authorVicente Martínez, Yésica
dc.contributor.departmentQuímica Analítica
dc.date.accessioned2025-01-17T12:06:57Z
dc.date.available2025-01-17T12:06:57Z
dc.date.issued2019-12-12
dc.description© 2019 Published by Elsevier B.V. This document is the published version of a published work that appeared in final form in Science of the Total Environment To access the final edited and published work see: https://doi.org/10.1016/j.scitotenv.2019.136111
dc.description.abstractPhosphate removal is an important factor thatmust be taken into account in eutrophizedwaters. For this reason, many studies on differentways of removing phosphates fromwater have been published nowadays. In thiswork, a comparative study between the use of graphene oxide (GO) and graphene oxide functionalized with silver nanoparticles (GO@AgNPs) as adsorbents to remove phosphates from water samples has been carried out. Experimental conditions, including the pH, adsorbent dose, contact time and temperature, have been analyzed to achieve the highest adsorption efficiency. Although both adsorbents can be considered suitable for removing phosphates from aqueous solutions, GO@AgNPs provided a maximum removal efficiency of 100%, reaching the equilibrium conditions instantaneously under straightforward experimental conditions. Moreover, a much lower adsorbent dose was necessary than with graphene oxide. When GO was used, the maximum removal efficiency was 75%, 9 minwere necessary to reach the equilibriumconditions and 20mgof adsorbentwere needed. Both adsorbents can be regenerated in an acid medium, giving recovery percentages of 98% and 80% for GO and GO@AgNPs respectively, which allows them to be recycled and used again.
dc.formatapplication/pdfes
dc.format.extent10es
dc.identifier.citationScience of the Total Environment 709 (2020) 136111
dc.identifier.doihttps://doi.org/10.1016/j.scitotenv.2019.136111
dc.identifier.issnPrint.: 0048-9697
dc.identifier.issnelectronic.: 1879-1026
dc.identifier.urihttp://hdl.handle.net/10201/148689
dc.languageenges
dc.publisherElsevier B.V
dc.relationNo financiación externa a la UMUes
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0048969719361078?via%3Dihub
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectGraphene oxide
dc.subjectSilver nanoparticles
dc.subjectPhosphates removal
dc.subjectAdsorption
dc.subjectThermodynamic analysis
dc.subjectFacultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU::Química Analítica
dc.titleGraphene oxide and graphene oxide functionalized with silver nanoparticles as adsorbents of phosphates in waters. A comparative studyes
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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