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 39 for “"anti-fouling"”.
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Biomimetic approach to anti-fouling surfaces
… is a very popular approach in the control of biofouling but only a few attempts have been made to use it for the purpose of scale inhibition. It is fair to say that there is a potential for more widespread study and exploitation of such systems. Biomimetics in surface engineering is receiving …
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Anti-fouling interfaces for energy applications
Fouling and accretion have negative impacts on a plethora of industrial processes. This doctoral thesis focuses on the theoretical and experimental exploration of mitigation strategies for heterogeneous nucleation of foulants. The dissertation covers low-temperature precipitation fouling, corrosion …
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Fabrication of Electrospun Anti-fouling Membranes for Emulsified Oil-in-Water Separation
… design membranes with better robustness against fouling. There are generally two approaches to reducing the detrimental effects of membrane fouling. One way is to improve the effectiveness of foulant removal during membrane regeneration, so that a larger proportion of the original permeate flux …
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Design and Development of an Anti-fouling Urinary Catheter Utilizing Active Surface Deformation
… protective effect of the biofilm matrix against antibiotics. The anti-fouling catheter technology proposed and demonstrated herein uses a mechanical, non-antibiotic approach to physically remove biofilms and thereby provide an appealing option for potentially stopping the progression of …
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Engineering tough, hygroscopic, and active hydrogels for surgical simulation and anti-biofouling
… of contexts, including tissue engineering, anti-fouling, drug release, medical devices, and flexible electronics. The usefulness of hydrogels in these contexts stems from their structure, consisting of a 3D cross-linked polymer network containing mostly water. This structure leads to a …
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Synthesis and Grafting To of Biomimetic Bottlebrush Polymers
… that decorate biointerfaces and provide anti-fouling, lubrication, or wear-protection. These molecules contain a surface-adhesive headgroup to anchor macromolecules to a target surface and a bottlebrush polymer that endows the surface with a beneficial property, like antifouling. These …
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Development of Thin-Film Composite Membranes Incorporated With Graphene Oxide and Derivatives for Forward Osmosis Processes
Graphene oxide (GO) has been used to improve the anti-fouling and separation performance of the thin-film composite (TFC) membranes. Nonetheless, very few studies provided an in-depth explanation of the possible interaction between GO and polymer matrix that alter the membrane properties and …
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Development of Innovative Ultra-Filtration Fibre Technologies for Waste-Water Treatment in Membrane Bio-Reactors (MBR)
… on MBR factories to develop high strength, anti-fouling fibre modules with improved permeabilities. The fabrication of such membranes, however, is restricted by the trade-off that exists between mechanical strength and filtration properties, as well as scalability concerns that arise when …
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Advances in membrane-based oil/water separation
… means. First we seek to better understand fouling by oil-in-water emulsions on conventional polymeric ultrafiltration membranes. We investigate the decrease in water production over time using model and actual produced water samples with varying solution zeta potentials and make meaningful …
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Investigating The Relationship Between Surface Topology And Functional Characteristics For Injection Moulded Thermoplastic Components
… to transmit and adhere, and can be resistant to antibiotics. They also evolve over time to survive in harsh environmental conditions. Current research reveals that design of plastic surfaces containing submicron structures, is becoming a popular approach to tackle issues concerning infection …
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Effects of Magnetically Induced Micro-mixing on Nanofiltration Performance
… concentration polarization leading to membrane fouling thus compromised membrane performance. Magnetically responsive nanofiltration (NF) membranes functionalized with superparamagnetic nanoparticles (SPNs) attached to the chain ends of grafted polymer nanolayers have been shown to be effective …
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Coating of Polyvinylchloride for Reduced Cell / Bacterial Adhesion and Antibacterial Properties
… by coating a biocompatible, hydrophilic and antibacterial polymer by a mild surface modification method. The surface was first activated and then functionalized, followed by coating with polymer. The surface functionality was evaluated using cell adhesion, bacterial adhesion and bacterial …
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Fabrication of TIO₂-embedded PVDF membranes and their application in algae membrane bioreactor systems
… and 34% of nitrogen form wastewater. The anti-fouling characteristics of membranes were evaluated based on the measurement of intrinsic, reversible and irreversible resistances, and the scanning electron spectroscopy (SEM) study. Total resistance of TiO2-embedded membranes was 65% lower …
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Investigation of synthetic methods for preparation of 2<sup>o</sup>-amino derivatives of 5-amino- 1, 10-phenanthroline: Applications to Cu<sup>+2</sup> based impedance sensors
… include monitoring Cu<sup>2+</sup> leaching from anti-fouling coatings on ship hulls. The importance of the planned secondary alkyl amino derivatives will be to test their binding properties to the gold surface through dithiocarbamate linkages by monitoring the IDE impedance signal. Practical …
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Controlling crystallization via interfacial engineering : patterning, fouling-inhibition, and nutrient recovery
… deposits is a leading contributor to rusting and fouling of coastal structures. However, crystallization can also be used as a purification technique for producing a variety of important chemicals. In this thesis, control of crystallization at interfaces is explored for improving sustainability …
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Investigating the parameters of metal-organic framework crystal growth control for reverse osmosis membrane nanofillers and direct air capture of CO2
… with improved membrane flux, salt rejection, and anti-fouling properties. The synthetic parameters of MOFs were also considered for the commercial scale-up of CO2 direct air capture (DAC) solid sorbents, including UiO-66, MIL-101-Cr, and Mg-MOF-74, to preserve CO2 uptake capacities between lab and …
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Application of impedance spectroscopy to the study of dithiocarbamate species on Au surfaces: Effects of aqueous Cu²⁺ and Mg²⁺ ions
… of the amount of Cu<sup>2+</sup> leaching from anti-fouling marine hull coatings into water would be a useful example of practical applications of impedance-based sensors for heavy metal ions. Results of this work indicate that the SAM-treated IDE arrays differed in their impedance behavior …
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Design of anti-biofouling Lubricant-Impregnated Surfaces (LIS) robust to cell-growth-induced instability
… of cells on wetted solids, so-called biofouling, is a serious operational and environmental threat in many underwater and biomedical applications. Over the last decade, Lubricant-Impregnated Surfaces (LIS) has been one of the popular remedies, owing to its unique oil layer that separates …
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New paradigm to design micro and nano-patterned membranes
… of this technology, and identify bio-fouling to be the main cause of irreversibility (thus costs) in this process. After observation of solutions developed by Nature to deter bio-fouling (especially for marine species), surface micro-topography and chemistry have been identified as the …
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Studies on Corrosion, Fouling and Durability of Advanced Functional Nonwetting Surfaces
… other parameters on corrosion inhibition. The anti-corrosion properties of SHS and LIS were systematically studied over a range of temperatures (23°C–90°C) to simulate an actual condenser environment. Moreover, the environment of application often involves using harsh cleaning chemicals. The …
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