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dc.contributor.advisorRíos Davila, Rafael
dc.contributor.authorColon Nieves, Abelardo F.
dc.date.accessioned2023-11-10T22:10:53Z
dc.date.available2023-11-10T22:10:53Z
dc.date.issued2023-07-24
dc.identifier.urihttps://hdl.handle.net/11721/3468
dc.description.abstractThe increasing human population and associated demands for natural resources presents a direct challenge to the quality and quantity of potable water. Anthropogenic activities such as industrialization, agriculture, and urbanization are paving the road towards a reduction in water quality and availability. Adding to the anthropogenic factor, the improper management of point catchment areas exacerbates the problem, leading to waterborne disease outbreaks and the deterioration of public health. In an urban environment such as cities and countryside areas, the expansion of impervious surfaces is adding non-point source (NPS) pollutants to the watershed and groundwater catchment areas, which alter the quality and quantity of available potable water. Biocompatible applications of nano materials have been an active research area as water treatment alternative in recent years because of their unique structure and physicochemical properties. Moreover, Water Membrane Filtration has emerged as a critical technology to reduce waterborne diseases caused by poor water quality. Filtration technology presents key challenges, such as membrane selectivity, permeability, and biofouling. Nanomaterials can offer solutions to these challenges by varying the membranes’ mechanical and bactericidal properties. This research uses a holistic approach to improve water quality using Geographic Information System (GIS) analysis to point out NPS source and development stormwater strategies to prevent and reduce water quality deterioration and detonation nano diamond particles with facile surface functionality and biocompatibility properties that are added into membranes used for water filtration treatments. GIS analysis performed pointed out anthropogenic land use area that significantly affected water quality deterioration. Stormwater best management strategies were implemented depending on the geographical and hydrological characteristics such as topography, water flow direction and water accumulation around the watershed catchment area. Scanning and transmission electron microscopy (SEM and TEM) and Fourier Transform Infrared spectroscopy (FTIR) were performed to study the membrane surface. FTIR spectra confirm an increase of oxygen functional groups onto the Ultra Dispersed Diamond’s (UDD) surface following acid treatment. SEM images show particle deagglomeration of functionalized UDD at the membrane surface. Tensile strength tests were done to measure the UDD mechanical properties and Coliscan membrane filtration characterization was performed to determine the filter effectiveness. PES and PDVF membranes expressed a change in their yield point when UDD was incorporated into the porous matrix. Significant microorganism reduction was obtained and confirmed using t-test analysis at a 95% level of confidence. UDD embedded membranes exhibit a significant bactericidal reduction compared to commercial membranes suggesting these membranes have the potential to enhance and improve current water membrane filtration systems.en_US
dc.description.sponsorshipThe author aknowledges its funding agencies National Aeronautics and Space Administration (NASA) and National Science Foundation (NSF with their grant NASA Training Grant NNX15AI11H, Integrative Graduate Education and Research Traineeship Program (IGERT) award 0801577, EPSCoR CAWT Grant No. OIA-1849243 and ICorps grant number 2044589en_US
dc.language.isoen_USen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.subjectGISen_US
dc.subjectFTIRen_US
dc.subjectLand Changeen_US
dc.subjectMembrane filtrationen_US
dc.subjectSEMen_US
dc.subjectTEMen_US
dc.subject.lcshDrinking wateren_US
dc.subject.lcshFourier transform infrared spectroscopyen_US
dc.subject.lcshGeographic information systemsen_US
dc.subject.lcshLand useen_US
dc.subject.lcshNanodiamondsen_US
dc.subject.lcshScanning electron microscopyen_US
dc.subject.lcshTransmission electron microscopyen_US
dc.subject.lcshWater qualityen_US
dc.titleFrom nano to macro: A sustainable and holistic approach to improve water quality in changing environmenten_US
dc.typeDissertationen_US
dc.rights.holder© 2023 Abelardo F. Colon Nievesen_US
dc.contributor.committeeWeiner, Brad R.
dc.contributor.committeeMorell, Gerardo
dc.contributor.committeeAvalos, Javier
dc.contributor.committeeGrafals, Rosana
dc.contributor.campusUniversity of Puerto Rico, Río Piedras Campusen_US
dc.description.graduationSemesterSpring (2nd Semester)en_US
dc.description.graduationYear2023en_US
thesis.degree.disciplineEnvironmental Sciencesen_US
thesis.degree.levelPh.D.en_US


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Attribution-NonCommercial-NoDerivs 3.0 United States
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 United States