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.
Results
Showing 1 to 20 of 31 for “"Photocatalytic degradation"”.
-
The photocatalytic degradation of phenolic compounds
… by HPLC analysis of the initial products of degradation in water or aqueous acetonitrile. <br></br><br></br>The position of substituents relative to the hydroxyl group were found to influence the reaction rate and also primary oxidation steps, and hence the intermediate profile. 2,6- …
-
Simulated solar light assisted photocatalytic degradation of organic matters
… and homogeneous photocatalysis. The photocatalytic reactions take place under ambient operating conditions, but the photoactivity is usually constrained by the narrow wavelength spectrum for photonic activation of catalysts. The higher-end of ultraviolet (UV) spectrum required for …
-
Monitoring Photocatalytic Degradation of X-ray Contrast Media with Raman Spectroscopy
… removal process can be started with ultraviolet photocatalytic degradation of X-ray contrast media in the presence of titanium dioxide or other catalysts. Raman spectra of diatrizoate and iohexol were taken in an aqueous solution in the presence and absence of titanium dioxide during exposure to …
-
Optimization of photocatalytic degradation of wastewater using oxide and non-oxide photocatalysts
A dissertation submitted in fulfillment of the academic requirement for the degree of Master of Engineering: Chemical Engineering, Durban University of Technology, Durban, South Africa, 2025.
-
Polymeric Adsorption of Estrone from Water and Photocatalytic Degradation by Zinc Oxide
… adsorbent regeneration process; 3) using photocatalytic degradation as an intensive treatment to degrade estrone at relatively high concentrations. Polyamide (Nylon) 6,6 microfiltration membranes were used as a functional polymeric adsorbent to capture low levels of estrone from water. The …
-
The use of photocatalytic degradation to improve the quality of crude refinery effluent
Submitted in fulfillment of the requirements for the Degree of Master of Engineering: Chemical Engineering, Durban University of Technology, Durban, South Africa, 2018.
-
Photocatalytic degradation of palm oil mill secondary effluent (POMSE) using zinc oxide nanoparticles
… ZnO-PEG nanoparticles have a great potential in degradation of POMSE and this is supported with the results evaluated from four potential factors which are (A) different type of photocatalysts, (B) initial pH of the POMSE, (C) loading of ZnO-PEG and (D) concentration ratio of POMSE. It was found …
-
Using TiO2 to Optimize the Photocatalytic Degradation of Kraft Black Liquor Using Response Surface Methodology
… aims to optimize the performance of black liquor photocatalytic degradation using the TiO2/UV system. Five practical factors were selected to develop the optimal total organic carbon (TOC) reduction. A two-level 2k design was used as the preliminary study for examining the optimal initial …
-
Photocatalytic degradation of pharmaceuticals in aqueous solutions and development of new dye sensitised photocatalytic materials
This research examines the photocatalytic degradation of 3 active pharmaceutical ingredients (APIs) Famotidine (FAM), Tamsulosin Hydrochloride (TAM) and Solifenacin Succinate (SOL) using TiO2 and UV light. Photocatalytic degradation studies were monitored with individual HPLC-PDA methods which were …
-
Photocatalytic degradation of pharmaceuticals in water: Design of nanocatalysts and study of by-products and mechanism
Esta tesis doctoral se centra en la degradación fotocatalítica de diferentes medicamentos (paracetamol, ibuprofeno, diclofenaco, naproxeno y ciprofloxacino) en agua. Para este fin diferentes catalizadores fueron sintetizados y caracterizados. La capacidad fotocatalítica del TiO2 y g-C3N4 se …
-
UV- TiO2 photocatalytic degradation of the x-ray contrast agent diatrizoate: kinetics and mechanisms in oxic and anoxic solutions
… processes. This study examines the aqueous photocatalytic treatment of diatrizoate using nanophase titanium dioxide (TiO2). Experiments demonstrate that diatrizoate is degraded in aqueous TiO2 suspensions illuminated with ultraviolet-A (UVA) light under both oxic and anoxic conditions. Both …
-
Effects of polymorphs and of Fe-doping on the properties of engineered nano TiO2 for photocatalytic degradation of emerging pollutant
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Solar photocatalytic degradation of basic red 51 in hair dye bathroom greywater using zinc oxide nanoparticles synthesized with Corriandrum sativum leaf extract
… ZnO NPs to aggregate causes drop in the solar photocatalytic degradation (SPD). The present study is aimed to formulate ZnO NPs synthesized using Corriandrum sativum leaf extract as a capping agent to prevent aggregation of ZnO NPs for hair dye bathroom greywater degradation (HDBGW). The ZnO …
-
Photocatalytic Degradation of Perfluorooctanoic Acid in Water by Free and Immobilised ZnO, g-C3N4 and Their Composite under UV and Visible Light Irradiation
… to In₂O₃, as a benchmark photocatalyst for PFOA degradation, under ultraviolet (UV) irradiation. More interestingly, suspended ZnO nanoparticles showed promising for PFOA degradation under visible light irradiation (unlike In₂O₃ nanoparticles). The probable production of sulphate radicals by the …
-
Thermal Analysis of Binding of Organic Pollutants to Titanium Dioxide
… in removing highly stable organic compounds. Photocatalytic degradation on titanium dioxide is a possible alternative technique for many classes of these compounds. Several studies have been done by other researchers to study mechanisms of photocatalytic degradation, which occurs either …
-
Bismuth Tungstate Photocatalysis for N-Nitrosamines Removal from Amine Washing Wastewater
… capture using amine solvents. A large variety of degradation products are generated during the CO2 capture process. This is mostly due to amines reacting irreversibly with CO2, and other oxygenated compounds in the flue gas. Amine degradation products poses threat to human health and marine life. …
-
SYNTHESIS, CHARACTERIZATION OF 3D GRAPHENE-BASED MACROASSEMBLIES AND THEIR ENVIRONMENTAL REMEDIATION APPLICATIONS
… an effective way to improve the properties and photocatalytic performance of 3D GMAs. This doctoral study aimed at bringing together the latest advances in materials science to prepare novel 3D GMAs with heteroatom doping and to seek their practical environmental remediation applications. …
-
Nanoparticles from microalgae for environmental and biomedical applications
… Additionally, the study investigates the photocatalytic degradation of Brilliant Blue R dye using silver nanoparticles derived from C. vulgaris and H. pluvialis, demonstrating significant efficiency in removing organic dyes from wastewater and addressing water pollution concerns. Overall, …
Page 1 of 2