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 16 of 16 for “"continuous separation"”.
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Continuous separation and recycle of homogeneous catalysts in small scale flow system
… (Pd, Pt, Ru, Rh, etc.) can pose significant separation challenges. Regulatory bodies (such as the FDA and EMA) require that many popular catalytic heavy metals stay below 10 ppm in pharmaceutical drugs. Organic solvent nanofiltration (OSN) membranes are an upcoming technology with the …
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The effect of reflux in the continuous separation of hydrocarbon mixtures by rectification
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1924.
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A novel method for the continuous separation of microorganisms based on electrical properties
… of possibilities. This thesis proposes a separation method - iso-dielectric separation, or IDS - which separates microorganisms continuously based on their dielectric properties. This technology would enable high throughput screening of cells based upon electrically distinguishable …
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Continuous flow separation techniques for microchemical synthesis
… micromixers in series to the development of continuous microfluidic separation tools. Safety, high heat and mass transfer rates, and cost savings all continue to motivate microreactor development as a research tool, but many reactions generate a variety of (by)products including solid …
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Selective extraction of colorful proteins using reverse micelles
… As the field has expanded, research into bioseparation processes has also expanded. The need for more cost effective ways to deliver products that are in high demand is greater now than ever. Bioseparation processes are a very costly part of the overall process of product development. While …
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Tapered microfluidic device for multi-particle separation based on sedimentation principle
… microfluidic device for a passive multi-particle separation. Separation process plays a significant role in various industries for example, biomedical diagnostic, food processing and substance purification. The growing needs for continuous separation process lead to the creation of numerous …
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Downstream Processing with Affinity Chromatography. A Study of a Continuous Process for Biospecific Adsorption
… against the experimental data.<br/><br/>Continuous separation experiments were performed with three fluidised beds, namely an adsorption, desorption and wash column, with circulation of solids between the columns. Purities of 83% and 66% were achieved in these runs with complete recovery …
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Continous annular chromatography for the separation of carbohydrate mixtures
The continuous separation of beet molasses resulting in a sucrose rich product and a non-sugar waste product was carried out using a rotating annular chromatograph. The annulus was 12 mm wide and 1.4 m long and was packed with a sodium charged 5.5% cross-linked polystyrene ion exchange resin. …
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Process Study, Simulation, and Optimization of the Direct Conversion of Biomass to Ethyl Levulinate
… in parallel. The product streams feed into a continuous separation process composed of flash vessels and distillation columns to separate and purify the various products, intermediates, unconsumed reactants, and recoverable catalyst and solvent. This work ultimately informs decisions regarding …
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The Estonian forest sector in transition to sustainability? : Capturing sustainability with the help of integrated assessment
… definition of sustainable forestry leads to a continuous separation of environmental and socio-economic aspects. It can be concluded that the Estonian forest sector faces two main sustainability challenges a) increasing the sustainability in private forests, and b) balancing the duality …
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A Semi-Continuous Chromatographic Process for the Separation of Carbohydrates
… chromatographic process. The chemi-adsorption separation mechanism employed in this research study for the separation of glucose and fructose is outlined. A review of various industrial processes for manufacturing high fructose syrups is also included so as to serve as a basis for comparison. …
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The production of fructose from carbohydrate feedstocks
… of the general chromatographic theory and of continuous chromatographic techniques has been carried out. Three methods of inversion of sucrose to glucose and fructose in beet molasses were explored. These methods were the inversion of sucrose using the enzyme invertase, by the use of …
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Design and operation of microchemical systems for multistep chemical syntheses
… operations enabled by these systems. In-line continuous separation devices are developed that enabled removal of unreacted reagents/byproducts, making it possible to realize a series of reactions without leaving the microreactor environment. Differences in surface forces and preferential …
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Redox-responsive polymers for the reversible extraction of butanol from water
… of polysaccharides, and the subsequent separation from the alcohols from the aqueous fermentation broth. The inhibitory nature of alcohols to their own production necessitates the continuous lowering of the concentration of the alcohol during the fermentation process. The technology for …
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Use of magnetic nanoparticles for wastewater treatment
… technique based on a magnetically enhanced separation technology as an alternative to existing methods to separate the target contaminants from a sediment matrix or wastewater stream. This technology uses specifically tailored surface modified magnetic nanoparticles (MNP) that are capable of …
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Continuous Co-Separation by Liquid Absorption in Aqueous Cuprous Chloride (CuCl) and Magnesium Chloride (MgCl2) Solution
… considered in this research to accomplish the separation was liquid absorption in a packed column. Several experiments were performed to identify the best process solution to use in a prototype. The experiments, based on the COSORB process, consisted of CuCl mixed with a complexing agent (metal …