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