Phosphate removal from aqueous solutions by heat treatment of eggshell and palm fiber

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dc.contributor.affiliationPerez, S., Grupo de Investigación Materiales con Impacto (MAT and MPAC), Universidad de Medellín, Medellín 050026, Colombia
dc.contributor.affiliationMuñoz-Sadaña, J., Centro de Investigación y de Estudios Avanzados del IPN, Lib. Norponiente No.2000, Fracc. Real de Juriquilla, 76230, Querétaro, Qro, Mexico
dc.contributor.affiliationAcelas, N., Grupo de Investigación Materiales con Impacto (MAT and MPAC), Universidad de Medellín, Medellín 050026, Colombia
dc.contributor.affiliationFĺorez, E., Grupo de Investigación Materiales con Impacto (MAT and MPAC), Universidad de Medellín, Medellín 050026, Colombia
dc.contributor.authorPerez S.
dc.contributor.authorMuñoz-Sadaña J.
dc.contributor.authorAcelas N.
dc.contributor.authorFĺorez E.
dc.date2020
dc.date.accessioned2021-02-05T14:58:28Z
dc.date.available2021-02-05T14:58:28Z
dc.descriptionPhosphate removal from wastewater and the correspondent sustainable technologies are urgent issues to solve since phosphorous causes eutrophication of water sources. The effect of heat treatment on the mixture eggshell (ES), rich in calcium carbonate, with fiber palm (F), rich in carbonaceous material for phosphate removal is here reported focusing on the effects of temperature and F/ES ratio. The gases obtained from the F pyrolysis process help to improve the Ca(OH)2 formation. In samples with a ES/F ratio of 1/10 (ESF-1:10) the CaCO3 is mainly transformed into Ca(OH)2 (83 %) at 600 °C instead of 800 °C. The obtained solids were employed for phosphate removal from aqueous solutions and characterized before and after P removal. The ESF-1:10 sample pyrolyzed at 600 °C exhibited the best adsorption performance (48.3 %) at 2 h while ES showed 6.5 % at the same experimental conditions. The pseudo-second-order model kinetic and Langmuir model isotherm provided better-fitting models for the adsorption behavior of P. The adsorption capacity using Langmuir model was 72.0 mg g-1, and the pseudo-second-order kinetic model assumes that the removal process of adsorbate is controlled by chemical adsorption. These results show that the Ca(OH)2 is responsible for the phosphate removal by ligand exchange followed by precipitation mechanism leading to the formation of apatite. © 2020 Elsevier Ltd.
dc.identifier.doi10.1016/j.jece.2020.104684
dc.identifier.issn22133437
dc.identifier.urihttps://hdl.handle.net/11407/5991
dc.language.isoeng
dc.publisherElsevier Ltdspa
dc.publisher.facultyFacultad de Ciencias Básicasspa
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85097506863&doi=10.1016%2fj.jece.2020.104684&partnerID=40&md5=3b08f3c49b17b8c85076923ea4d2d9ee
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceJournal of Environmental Chemical Engineering
dc.subjectAdsorbentspa
dc.subjectBiomassspa
dc.subjectCalcium carbonatespa
dc.subjectCalcium hydroxide phosphatespa
dc.subjectEggshellspa
dc.subjectWaterspa
dc.subject.proposalCalciteeng
dc.subject.proposalCalcium carbonateeng
dc.subject.proposalEutrophicationeng
dc.subject.proposalHeat treatmenteng
dc.subject.proposalHydrated limeeng
dc.subject.proposalPhosphate mineralseng
dc.subject.proposalAdsorption performanceeng
dc.subject.proposalEffect of heat treatmentseng
dc.subject.proposalEffects of temperatureeng
dc.subject.proposalExperimental conditionseng
dc.subject.proposalPrecipitation mechanismeng
dc.subject.proposalPseudo-second order modeleng
dc.subject.proposalPseudo-second-order kinetic modelseng
dc.subject.proposalSustainable technologyeng
dc.subject.proposalAdsorptioneng
dc.titlePhosphate removal from aqueous solutions by heat treatment of eggshell and palm fiber
dc.typeArticle
dc.type.driverinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion

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