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dc.contributorCortina Pallás, José Luís
dc.contributor.authorLa Rotonda Ferrer, Pablo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.description.abstractOne of the most important ecological problems is the eutrophication, this process consist in the uncontrolled growing of algae and phytoplankton, which can destroy entire aquatic ecosystems. The reason of this process is the excess of nutrients, as for example, phosphate coming from human activities. This project focus on the study of synthetic zeolites capacity to absorb phosphate from wastewater. Zeolites are porous minerals of the alumina-silicates family with high capacity of cations exchange. They can be natural or synthetic and present a tetrahedral structure that can include alkali or alkaline earth metals, those metals can improve the capacity to absorb determinates contaminants. The zeolite used for this work is a calcium zeolite (Ca-Ze) obtained from a synthetic sodium zeolite (NaP1). The NaP1 is produced using fly ashes as raw material, by hydrothermal process. The objective of the project is to evaluate: the elimination of phosphate, the equilibrium and kinetic data, using agitated reactors, and the integration of the sorption process with a separation process, using ultrafiltration membrane in different operating conditions. The evaluated operation conditions are designed to simulate the treatment of residual waters coming from industries, households and agricultural fields. Other experiments as kinetic, isotherms and point zero charge are done to characterize the zeolite used in the ultrafiltration plant and to make a comparison with other zeolites and adsorbents used for phosphate removal. Analysis results of phosphate loaded samples give information about the phosphate adsorption mechanisms and the adsorption capacity in different working conditions. The formation of calcium-phosphate minerals, brushite, is the principal phenomena during adsorption, it is favoured by low pH as seen in the results. The analytical techniques used are UV-visible spectrophotometry for phosphate analysis, ionic chromatography for the analysis of different ions presents in the water, X ray diffraction for zeolite sample analysis.
dc.publisherUniversitat Politècnica de Catalunya
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshPhosphates -- Absorption and adsorption
dc.subject.lcshSewage -- Purification -- Phosphates removal
dc.titlePhosphate recovery using calcium zeolite in ultrafiltration pilot plant
dc.typeBachelor thesis
dc.subject.lemacAigües residuals -- Depuració -- Eliminació de fosfats
dc.subject.lemacFosfats -- Absorció i adsorció
dc.rights.accessOpen Access
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona

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