Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Water Remediation"”.
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Nanomaterials for Sustainable Water Remediation
… leads to a rise in contaminated water resources due to the release of pollutants, such as organic dyes, into aquatic environments. Adsorption process, which involves the transfer of undesirable chemicals from a fluid phase to the surface of a solid adsorbent with high binding …
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Cellulose-metal organic framework nanocomposite adsorbent films for water remediation
… Ni-BDC/CNC (3). This composition results in water-stable adsorbent films, which are recyclable with minimized secondary contamination. The successful preparation of the adsorbent films was verified by several characterization techniques such as X-ray diffraction (XRD), Fourier transform …
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Integration of redox-electrosorption and redox-electrodialysis for water remediation, waste valorization, and organic species separations
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Gypsum scale formation on a heated copper plate under natural convection conditions and produced water remediation technologies review
… applications such as heat exchangers and thermal water treatment technologies. Formation of dihydrated calcium sulfate scale, also known as gypsum, on a heated copper plate is studied in lab. The copper plate, held at a given temperature, is immersed in a supersaturated solution of calcium sulfate …
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Resorcinol-formaldehyde/titania (RFTi) gel composites for wastewater treatment
Increasing levels of water pollution, together with the appearance of emerging pollutants, necessitates the development of efficient new techniques for water remediation. Conventionally, adsorption and environmental catalysis can effectively respond to this demand, and these methods can be enhanced …
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Environmental impact of mine drainage and its treatment on aquatic communities
… mine drainage is used to discern the effects of water and sediment related variables and elucidate the most important variables in the impact of mine pollution on freshwater macroinvertebrate communities. The implications of this are to be considered for improving mine water remediation …
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Heat and mass transfer in bubble column dehumidifiers for HDH desalination
… in small-scale desalination and industrial water remediation. Performance parameters for dehumidifier design for HDH, including a device-specific parallel-flow effectiveness, are explained. A new model for the performance of single bubble trays is developed based on the rapid mixing in the …
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DEVELOPMENT OF NEW METHODOLOGIES AND PRACTICES TO REDUCE THE ENVIRONMENTAL IMPACT IN THE PRODUCTION OF CERAMIC MATERIALS
… growing global challenges of energy security and water pollution, this thesis explores integrated electrochemical and photocatalytic approaches for sustainable hydrogen production and advanced wastewater treatment. By coupling the anodic oxidation of nitrogen- and pharmaceutical-based pollutants …
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Effect of Dispersion on Rheology and 3D Printing of Chitosan-Graphene-Titanium Dioxide Composites
… and particle-particle adsorption kinetics for water remediation applications. However, DIW of particle-filled systems faces challenges, particularly nozzle clogging. This paper explores the relationship between dispersion of aggregate size, torsional rheology, and the capacity to print …
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Impact of Sanitizers on Salmonella enterica Contamination and Microbial Populations of Poultry Processing Reuse Water
… increase in numbers, access to clean, fresh water is becoming increasingly difficult to balance between agricultural and municipal demands. Water scarcity is a limiting factor of food production in many countries, whether they are emerging or established economies. In conventional poultry …
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Polymer-based Graphene Oxide Derivatives as a tunable multi-purpose platform
… production. Moreover, Graphene itself is not water-soluble and tends to aggregate in solution driven by Van der Waals forces, thus making difficult any further functionalization of the carbon platform. Instead, the top-down approaches involve Graphite as raw material. Among the available …
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Organometallic redox-interfaces for selective electrochemical separations
… factors, in the contexts of environmental water remediation, chemical product purification in organic synthesis, metal-recovery and bio-separations. The design of selective stimuli-responsive interfaces is a crucial challenge for advanced electrochemical processes. Whereas redox-electrodes …
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Analisi degli aspetti di qualità nella gestione dei sistemi di drenaggio urbano attraverso modellazione numerica e indagini di campo
In order to protect river water quality, highly affected in urban areas by continuos as intermittent immissions, it is necessary to adopt measures to intercept and treat these polluted flows. In particular during rain events, river water quality is affected by CSOs activation. Built in order to …
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Design and Application of Nanostructured Flavin Photocatalysts
… to other fields such biomedicine or water remediation. Subsequently, the flavoenzyme specific oxidation of indole to indigo and indirubin dyes was explored using the FLPDA photocatalyst. The results showed that the nanoparticle system exhibited higher production of the valuable dyes …
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Squaramide- and Urea-based Supramolecular Gels: Characterization and Environmental Applications
… removal of different classes of pollutants from water matrices. This thesis explores the synthesis and characterization of eighteen new low molecular weight gelators (LMWGs), eleven based on the squaramide scaffold and seven based on the urea scaffold, their ability to form supramolecular gels, …
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Using 3D Tomography to Understand Fluid-Fluid Interface Evolution in Porous Media for Carbon Sequestration Applications
… are relevant to fluid connectivity for an air-water-sandstone system under ambient conditions. We aimed to investigate the effect of the saturation level of water and image resolution on the REV of the parameters investigated. We observed that both the saturation level and the image resolution …
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Using 3D Tomography to Understand Fluid-Fluid Interface Evolution in Porous Media for Carbon Sequestration Applications
… are relevant to fluid connectivity for an air-water-sandstone system under ambient conditions. We aimed to investigate the effect of the saturation level of water and image resolution on the REV of the parameters investigated. We observed that both the saturation level and the image resolution …
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Novel amorphous silica and silica xerogels for the adsorption of organic pollutants from water
The demand on water supplies is becoming more intensive, thus the need for innovative and cost effective produced water treatment technologies is rising. Produced water is the largest by-product generated by oil and gas extraction, hence, there are significant quantities requiring remediation. …
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Metal chalcogenide nanoparticle gel networks: their formation mechanism and application for novel material generation and heavy metal remediation via cation exchange reactions
… FOR NOVEL MATERIAL GENERATION AND HEAVY METAL REMEDIATION VIA CATION EXCHANGE REACTIONS</p> <p>by</p> <p>IRINA R. PALA</p> <p>February 2012</p> <p>Advisor: Dr. Stephanie L. Brock</p> <p>Major: Chemistry</p> <p>Degree: Doctor of Philosophy</p> <p> The dissertation research is focused on (1) …
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Degradation of polycyclic aromatic hydrocarbons in water: Alternative treatments to conventional processes.
… for particulate matter, PAHs are found in water in extreme low concentrations, in the range of ng L-1 or µg L-1. However, even at these ultra-trace or trace levels, they exhibit harmful effects on living beings and humans, especially when present as mixtures. That is the case of anthracene …
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