Publication:
Porous carbon-faujasite composites containing transition metals for aqueous phase adsorption applications

dc.contributor.advisor Hernández Maldonado, Arturo J.
dc.contributor.author González Ramos, Karen M.
dc.contributor.college College of Engineering en_US
dc.contributor.committee Curet Arana, María C.
dc.contributor.committee Suleiman Rosado, David
dc.contributor.committee Román, Félix R.
dc.contributor.department Department of Chemical Engineering en_US
dc.contributor.representative Hernández Rivera, Samuel
dc.date.accessioned 2018-10-10T19:31:44Z
dc.date.available 2018-10-10T19:31:44Z
dc.date.issued 2014
dc.description.abstract Pharmaceutical and personal care products (PPCPs) have emerged in surface water in concentration levels enough to categorize them as “emerging contaminants” due to a lack of efficient wastewater treatment plant removal methods. Of several potential alternatives for remediation, only separation via adsorption at ambient conditions eliminates the risk of unwanted side products. The impetus for this contribution is the possibility of combining the hydrophobic nature of carbons with the unique adsorbent-adsorbate interactions provided by a transition metal based faujasite zeolite. A quasi-ordered (CFAU) composite was hydrothermally synthesized and decorated with extraframework transition metal centers (Ni2+ or Cu2+). The CFAU variants were fully characterized and performance was assessed via salicylic acid (a high occurrence PPCP) equilibrium adsorption tests at ambient conditions. The salicylic acid equilibrium adsorption capacities increased as follows: FAU < Activated Carbon < CFAU < Ni2+ -CFAU << Cu2+ -CFAU, proving the synergistic composite is a promising alternative for PPCP remediation.
dc.description.abstract Rastros de productos farmacéuticos y de cuidado personal (PPCP) se han hallado en cuerpos de agua a niveles de concentración lo suficientemente alarmantes para considerarlos como “contaminantes emergentes”. De varias posibles iniciativas para su remoción, sólo el fenómeno de adsorción a condiciones ambientales elimina la posibilidad de productos secundarios. El objetivo de esta contribución es la posibilidad de combinar la naturaleza hidrofóbica del carbón con las interacciones sorbato-sorbente particulares de una zeolita tipo faujasita modificada con metales de transición. Un compuesto semi-ordenado de carbón activado y faujasita (CFAU) fue sintetizado hidrotermálmente y modificado con los metales Ni2+ o Cu2+. Las variantes de CFAU fueron caracterizadas y su desempeño establecido mediante pruebas de adsorción en equilibrio de ácido salicílico (un PPCP de alta incidencia) a condiciones ambientales. Las capacidades de adsorción fueron las siguientes: FAU < Carbón Activado < CFAU < Ni2+ - CFAU << Cu2+ -CFAU, evidenciando que dado al comportamiento sinérgico, CFAU es una alternativa prometedora para la remediación de contaminantes emergentes.
dc.description.graduationSemester Summer en_US
dc.description.graduationYear 2014 en_US
dc.description.sponsorship Chemical Engineering Department at the University of Puerto Rico at Mayagüez, NASA Center for Advanced Nanoscale Materials, National Science Foundation en_US
dc.identifier.uri https://hdl.handle.net/20.500.11801/1008
dc.language.iso en en_US
dc.rights.holder (c) 2014 Karen M. González Ramos en_US
dc.rights.license All rights reserved en_US
dc.subject Pharmaceutical and personal care products en_US
dc.subject Emerging contaminants en_US
dc.subject Porous carbon-faujasite composites en_US
dc.subject.lcsh Emerging contaminants in water en_US
dc.subject.lcsh Adsorption en_US
dc.subject.lcsh Zeolites en_US
dc.subject.lcsh Mesoporous materials en_US
dc.subject.lcsh Salicylic acid en_US
dc.subject.lcsh Carbon composite en_US
dc.subject.lcsh Transition metals en_US
dc.title Porous carbon-faujasite composites containing transition metals for aqueous phase adsorption applications en_US
dc.type Thesis en_US
dspace.entity.type Publication
thesis.degree.discipline Chemical Engineering en_US
thesis.degree.level M.S. en_US
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