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 28 for “"Purification processes"”.
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Potential Applications of Graphene-Based Membrane in Solution Purification Processes
… advanced performance GO membranes for water purification. Initially, research was conducted to investigate the pressure-assisted method for fabricating a GO membrane using polyvinyl alcohol (PVA) as adhesive materials for swelling control and molybdenum disulfide as nanospacer. The next study …
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Investigations of microcystins (cyanobacterial peptide toxins) detection, purification and analysis.
… which led to the development of large-scale purification processes to provide material for use as standards in routine monitoring of natural waters and laboratory cultures. These methods were also employed to purify unknown microcystin variants for characterisation. The purified variants were …
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Chirality directed self-assembly: in situ construction of recyclable and reusable Janus dendrimers
… and require long reaction times with tedious purification processes. Herein, we successfully demonstrate a novel metal-ligand self-assembly approach with a high level of chiral discrimination to construct Janus dendrimers in situ. As far as we are aware, this is the first such example …
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A detailed study of desalination exergy models and their application to a semi-conductor ultra-pure water plant
… seeking to apply exergy analysis to water purification processes. A detailed study and comparison of two predominant desalination exergy models was undertaken to determine the most appropriate model for UPW and other water purification applications. Neither of these models was deemed …
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A Multivalent Ligand Display System with Plant Viruses: A Novel Approach Towards Studying Spatial Effects of Cell Adhesion Ligands
… resolutions, batch to batch consistency, simple purification processes, and genetic and chemical modalities that confer numerous advantages for the viruses that are not often available other materials in this size range. For example, the modification of a spherical or rod-shaped virus with small …
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3D-printed adsorbents for gas separations: A material development, kinetic assessment, and process performance investigation
… materials are promising for various gas purification processes, however, forming them into structured contactors is paramount in enhancing mass transfer properties and reducing pressure losses. In this research, various adsorbents were engineered into structured contactors with 3D …
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An Investigation into Cerium Oxidation Under Acidic Conditions
… of leach liquors to levels suitable for these processes. Oxidation in acidic solutions would allow for savings on reagents as well as lower water use, increasing the financial viability and environmental profile of rare earth purification processes. This study probes the efficacy of four …
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Development of a Novel TiO2-polymeric Photocatalyst for Water Purification both under UV and Solar illuminations
… being non removable by traditional water purification processes, made advanced oxidation processes come into existence. Among all kind of advanced oxidation processes, photocatalytic oxidation is the most promising one. The photocatalytic process is based on aqueous phase hydroxyl radical …
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Using high resolution mass spectrometry to profile impurities in drugs from different sources
… impurities associate with the molecule during purification processes. Impurity levels have to be controlled to conform to pharmacopoeial requirements; although this is less apparent in the case of organic and inorganic counterions. In the work reported in this thesis four applications of …
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Expression, Production, and Purification of Novel Therapeutic Proteins
… their activity throughout the fermentation and purification processes.</p> <p>The second portion of this dissertation examined and utilized two different types of models to mathematically describe the biological system. The first model was able to describe the fermentation system with respect to …
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Product and host engineering for low-cost manufacturing of therapeutic proteins in the yeast Komagataella phaffii
… are manufactured in either bacterial cell processes, which require bespoke purification processes to separate the product from cellular lysates, or in mammalian cell processes, which require long development timelines, stringent sterility requirements, and expensive feedstocks, all of which …
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Material Degradation Studies in Molten Halide Salts
This study focused on molten salt purification processes to effectively reduce or eliminate the corrosive contaminants without altering the salt's chemistry and properties. The impurity-driven corrosion behavior of HAYNES® 230® alloy in the molten KCl-MgCl2-NaCl salt was studied at 800 ºC for 100 …
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Exploring the Synthesis of Monolithic Metal-Organic Frameworks and their Composites for Advanced Water Management Solutions
… effective and environmentally sustainable water purification processes. Additionally, monoUiO-66, composed of zirconium oxide and benzoic dicarboxylate linkers, has shown significant promise in the realm of carbon dioxide adsorption, contributing to the fight against climate change. Building on …
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Performance and Fouling during Bioreactor Harvesting
… the most challenging impurities for downstream purification processes. In order to investigate the fouling during cell clarification, HCPs in the bioreactor, harvest, and backwash are identified and quantified using different methods. A dataset is established using the identified HCPs and used …
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High sensitivity pathogen detection assays from crude samples
… for pathogens require intricate pretreatment processes including pathogen lysis, isolation, and purification processes to separate the inhibiting factors from crude samples (such as whole blood, nasal swabs, saliva, and even food/environmental samples) before nucleic acid-based tests are …
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The purification of industrial wastewater to remove heavy metals and investigation into the use of zeolite as a remediation tool
… been widely used as adsorbents in separation, purification processes and environmental pollution control. Zeolites are used in various industrial applications due to their high cation-exchange ability, molecular sieve and cataltic properties. In order to reduce the costs of acquisition and …
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Novel thin film nanocomposite membranes with improved properties for enhanced desalination performance
… increasing applications for separation and purification processes such as desalination and wastewater treatment. The development of nanotechnology has opened new frontiers in the advancement of TFC membranes. The incorporation of nanomaterials into the thin film polyamide (PA) layer of TFC …
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Evaluation of Phenomena that Determine the Performance of Immunoaffinity, Peptide-Based and Ion Exchange Affinity Sorbents
… of immunoaffinity chromatography in large-scale purification processes have been precluded due to high capital costs and the inherent lability of immunosorbents. Peptide-based affinity sorbents are being developed in order to surmount the inherent limitations posed by monoclonal antibodies that …
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Development and testing of inorganic membranes for hydrogen separation and purification in a catalytic membrane reactor.
… membranes of choice in hydrogen separation and purification processes due to their infinite selectivity to hydrogen when defect-free. Despite their potentials in hydrogen processes, palladium membranes pose challenges in terms of cost and embritllement, which occurs when palladium comes in …
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Synthesis and characterisation of molecular nanostructures
… diverse chemical and oxidation methods for the purification of as-produced SWCNT were presented. Purified samples were investigated using TEM and OAS. The analysis of the optical absorption spectra in the UV-Vis energy range revealed that some of the chemical treatments are harmful to nanotubes. …
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