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dc.contributorCortina Pallás, José Luís
dc.contributor.authorRequena Rojas, Renzo Rafael
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2015-10-19T18:45:06Z
dc.date.available2015-10-19T18:45:06Z
dc.date.issued2015-06
dc.identifier.urihttp://hdl.handle.net/2117/77917
dc.description.abstractThe purpose of this project is to study the removal of zinc (II) with three types of apatite, a synthetic deficient calcium apatite (DCa HAp), a biogenic apatite (Apatite II TM) and a synthetic hydroxyapatite produced by a combustion based methodology. As heavy metals are of big health and the environment concern the research focus the attention in one of the most common element in water bodies. The efficiency and the behavior of the selected apatites in different experimental conditions using batch and column experiments have been studied. Additionally to the influence of water composition the influence of the pH and presence of other heavy metals on apatites removal capacities have been also evaluated. Chemical and Mineralogical techniques were used to characterize the properties of the apatites before and after being used on heavy metal extractions. The synthetic calcium deficient hydroxyapatite has the higher removal efficiency at low pH and that both calcium deficient hydroxyapatite and Apatite II TM have similar performance on metals removal efficiency. Batch equilibrium experiments were used to determine the adsorption capacity. DCa HAp, Apatite II TM, and apatite synthetized by combustion reported to have adsorption capacity of 34.0mg g-1 and 30.5mg g-1 and 8.30mg g-1 respectively. The metal extraction mechanisms was shown to be a complex process where the following main processes could be involved: a) dissolution of the apatites realizing Ca(II) and phosphate ions, b) sorption of the metal ions onto the apatite structure and c) formation of metal-phosphate mineral phases as Hopeite. The presence and morphology of Hopeite was identified by FSEM-EDAX and it was confirmed by X-Ray Diffraction.
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química del medi ambient::Química de l'aigua
dc.subject.lcshSewage -- Purification -- Zinc removal
dc.subject.lcshZinc -- Absorption and adsorption
dc.subject.lcshHydroxyapatite
dc.titleRemoval of zinc (II) freom aqueous solution using apatites
dc.typeMaster thesis (pre-Bologna period)
dc.subject.lemacAigües residuals -- Depuració -- Eliminació de zinc
dc.subject.lemacZinc -- Absorció i adsorció
dc.subject.lemacHidroxiapatita
dc.rights.accessOpen Access
dc.audience.educationlevelEstudis de primer/segon cicle
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona
dc.audience.degreeENGINYERIA INDUSTRIAL (Pla 1994)


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