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 17 of 17 for “"Extraction (Chemistry)"”.
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Liquid-liquid extraction of rare earth elements from sulfuric acid
This thesis is concerned with the liquid-liquid extraction and separation of Y, Ce, La, binary mixtures, and ternary mixtures as well as synthesis of novel amide ligands for the extraction of rare earth elements. Chapter I is the general introduction of the practical process and applications of …
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Understanding aggregation of solvating extractants in applied separations
Solvent extraction is an efficient and effective method for the industrial-scale recovery and purification of metals from mixed raw materials. Understanding the molecular-scale forces driving extraction remains an area of active research despite over 70 years of experience with industrial-scale …
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A study of the mechanism of liquid-liquid extraction from forming drops in a stagnant continuous phase
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Chemical Engineering, 1961
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Effect of tray design on the performance of a vibrating plate extraction column
Submitted in fulfillment of the requirements for the degree of Master of Engineering, Durban University of Technology, Durban, South Africa, 2015.
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Development of a headspace solid-phase microextraction (HS-SPME) procedure for the determination of short-chain fatty acids (SCFAs) in activated sludge by GC-FID
<p>The process of wastewater treatment includes the removal of inorganic solids such as sand and gravel as well as organic materials, phosphorus, and nitrogen. Activated sludge, containing a variety of living organisms, is added into the wastewater treatment system. Short-chain fatty acids (SCFAs), …
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Synthesis and Characterization of Bis-Phosphine Complexes with Transition Metals
Extractants and extraction methodologies play a vital role in many industrial processes, from the concentration of precious metals from ores to the separation of longlived nuclei from radioactive waste as well as the removal of heavy metals from soils and water for remediation. The vast majority of …
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Ecological method development for detecting N-nitrosodimethylamine in water using HPLC-PDAD
… and 5-μm column. A sustainable solid-phase extraction method was also investigated. Using ethanol for cartridge conditioning and extraction, recovery of NDMA was low (10%).</p>
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Optimization of extraction techniques for the isolation and pre-concentration of pharmaceuticals in aquatic environments
… for the degree Master of Applied Science: Chemistry, Durban University of Technology, 2021.
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Investigations into the extraction and the determination of polycyclic aromatic hydrocarbons (PAHs) from water by solid-phase extraction and capillary gas chromatography/ mass spectrometry
… An analytical procedure utilizing solid phase extraction with bonded phase silica (C8) cartridges combined with GC/MS was developed to analyze PAHs in water as an alternative method to those based on the extraction with organic solvent. This simple procedure involved passing a 50 ml of spiked …
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Conversion of sugarcane bagasse into carboxymethl cellulose
… for the degree of Master of Applied Sciences in Chemistry, Durban University of Technology, Durban, South Africa, 2020.
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Hollow fibre liquid phase microextraction of pharmaceuticals in water and Eichhornia crassipes
… for the Degree of Master of Applied Sciences in Chemistry, Durban University of Technology, Durban, South Africa, 2019.
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Comparison of lignin yield from sugarcane bagasse pellets using liquid hot water and ionic liquid pretreatment methods
… of the Degree of Master of Applied Sciences in Chemistry, Durban University of Technology, Durban, South Africa, 2019.
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Forensic sample analysis using supercritical fluid extraction coupled with solid phase microextraction
… A new method combining supercritical fluid extraction and solid phase micro-extraction (SFE/SPME) is introduced. This coupled procedure utilises the advantages of using supercritical carbon dioxide as an extraction solvent and collecting the extract on a selected SPME fibre. Together the …