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 639 for “"Scale-up"”.
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Scale-up in emulsion polymerisation
The procedure for successful scale-up of batchwise emulsion polymerisation has been studied. The relevant literature on liquid-liquid dispersion on scale-up and on emulsion polymerisation has been crit1cally reviewed. Batchwise emulsion polymerisation of styrene in a specially built 3 litre, …
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Scale-up of column flotation
… been investigated using laboratory and pilot-scale flotation cells. It was determined that column recovery is a function of flotation rate constant, axial dispersion, retention time and fractional air hold-up within the cell. Mathematical expressions have been developed which describe each of …
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Scale-up of oscillatory flow mixing
… plate columns, but at the laboratory scale has demonstrated a number of advantageous properties. These properties (such as control of residence time distribution, improved heat transfer and predictable mixing times) have been demonstrated at the laboratory scale for a wide range of …
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Scale-up of continuous chemical synthesis systems
… there has been a growing demand for milliscale systems capable of making material for clinical trials and pilot plant testing. The objective of this thesis is to demonstrate a practical system to accomplish continuous chemical synthesis within the context of a fully integrated pilot plant. …
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Scale-up of Using Novel Dewatering Aids
… quantities of water for cleaning processes. Upon cleaning, the spent water must be removed such that the final product moisture level meets market constraints. However, removal of free water from the surface of fine particles is difficult and costly, and often the results are less than …
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Novel supercritical biodiesel plant design & process scale-up
… separate material constituents. We tested a lab-scale nocatalyst supercritical biodiesel process using waste cooking oil and ethanol as feedstock. This led to the development of a scaled up modular EAC process using a non-catalyzed spiral bound plug flow reactor and advanced separation systems …
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Scale-Up of the Semi-Continuous Chromatographic Process
… of the gas/- liquid chromatographic scale-up problem. The potential of several proposed process schemes for production-scale separations is discussed. Colum utilisation can be increased, with respect to the conventional batch process, by employing a counter-current movement between …
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Scale-up behavior of the froth stability measurement
… little to no attention has been given to the scale-up behaviour of the measurement. It is easily thought of that a froth constrained within a froth column will behave significantly different to one in an industrial flotation cell. Two common scale parameters, froth column diameter and initial …
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Nanoporous flexographic printing : fundamentals, applications and scale-up
Printing of ultrathin layers of polymeric and colloidal inks is critical for the manufacturing of electronics on non-conventional substrates such as paper and polymer films, for applications such as smart packaging, asset tracking, and photovoltaics. Among conventional printing processes, …
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Scale-up and Measurement Enhancements of a BioGenerator Bioreactor
… throttling capability. A requirement for large scale energy storage systems becomes necessary and a system based on hydrogen generation, storage, and consumption for electrical grid supply-demand stabilization using a ferric sulfate oxidant is herein explored, named the BioGenerator. As the name …
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Estimating Population Size Using the Network Scale Up Method
… how many people they know in a specific group (e.g. people named Michael, intravenous drug users). The Network Scale up Method (NSUM) is a tool for producing population size es- timates using these indirect measures of respondents' networks. Killworth et al. (1998a,b) proposed maximum …
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Flow patterns, performance and scale-up of distillation trays
… of the warm water was measured by many thermocouples as the water flowed across the single pass 1.2 m diameter sieve tray. The thermocouples were linked to a mini computer for the storage of the data. The temperature data were then transferred to a main frame computer to generate temperature …
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Microreactor technology : scale-up of multiphase continuous flow chemistries
… compounds and kinetic studies at the laboratory scale. High heat and mass transfer rates, rapid mixing, and higher selectivities and conversions can be achieved in these microdevices thanks to the small characteristic dimensions, enabling the synthesis of compounds that cannot be synthesized in …
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Fluid Dynamics And Scale-Up Of Bubble Columns With Internals
… the phenomena associated with the local gas holdup and the bubble dynamics: specific interfacial area, frequency, velocity, and chord length) and their radial profiles via detailed experimentations by means of the four-point optical fiber probe as a measuring technique. In addition, the liquid …
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Hydrodynamics, stability and scale-up of slot-rectangular spouted beds
… have been proposed as a solution to overcoming scale-up difficulties with conventional axisymmetric spouted beds. They can be utilized in gas/particle processes such as drying of coarse particles and coating of tablets. However, application of this spouted bed was limited because of instability …
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Characterization and scale-up of microbubble generation in column flotation
… microbubble generation circuits on an industrial scale.
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An evaluation of grain boundary engineering technology and processing scale-up
Grain boundary engineering is the manipulation of low stacking-fault energy, face- centered cubic material microstructures to break the connectivity of the general grain boundary network through the addition of special grain boundaries. Grain boundary engineering processing consists of …
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Continuous-flow study and scale-up of conventionally difficult chemical processes
… and optimizing organic syntheses. The small scales and fast transport rates allow for faster experiments and lower amounts of chemicals to be used, reducing costs and increasing safety. Additionally, continuous flow processes allow for a large number of experiments to be performed after a …
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