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 63 for “"batch process"”.
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Computer control of a batch process for resin manufacture
… the provision of automatic control for the batch reactors of the type presently used in industry for the production of butylated melamine formaldehyde resins. For that purpose a pilot plant was built at Aston University that was interfaced with the Departmental Honeywell 316 Computer for …
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Finite-Difference Modeling of the Batch Process Smoldering Combustion of Wastewater
… wastewater treatment appliance. Data from a batch process sewage smoldering experiment was simulated using implicit finite-difference approximations, assuming one-dimensional transient conductive heat transfer. The time-dependent temperature profiles within the column represented the main …
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Design and operational enhancements for a batch process driven supply chain
… at Eastman Kodak involves large-scale batch steps dictated by both technical and economic factors. Large-scale batch processes can lead to an unresponsive and wasteful supply chain. This thesis explores supply chain design and operational improvements that can mitigate the effects …
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Advanced batch process modelling, control and optimization for injection stretch blow moulding
The injection stretch blow Moulding (ISBM) process is widely used to manufacture PET bottles for the beverage and consumer goods industry. However, at present the ISBM process, including both the stretch blow moulding and reheating processes, are totally open-loop. The processes are complex and …
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Thermal stability criteria embedded in avanced control systems for batch process intensification
Thermal stability of batch processes is a major factor for the safe and efficient production of polymers and pharmaceutical chemicals. The prediction of thermal stability for such nonlinear, non steady-state processes is unreliable when using most stability criteria found in literature. A new …
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Design of an optimised fed-batch process for insulin precursor production in Pichia pastoris
… in order to optimise the insulin production process. The experimental system developed in this study employed a two-stage fed-batch feeding strategy in which growth was optimised by feeding glycerol to boost biomass followed by induction of the gene encoding insulin precursor by feeding …
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Conversion of the batch process of manufacture of maleic acid hydrazide to a continuous process
Control of weeds is an agricultural problem of great importance. For centuries, only salts, ashes, or mechanical means of eradication such as hoeing, cutting, or burning were used in weed control. A large number of chemicals have been used for this purpose also. With the advent of modern railroads, …
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Process Intensification of Spodoptera frugiperda (Sf) Cell Growth via Multi-Parallel Bioreactor System
… this project is to improve the yield of the fed-batch manufacturing process for the production of Flublok influenza vaccine, which was approved by the FDA in 2018. In short, Spodoptera frugiperda (SF+) insect cells are grown to a specific target cell density and then infected with baculovirus …
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Using design of experiments to improve a batch chemical process
… The goal of this project is to improve overall process yield by modifying the upstream process. The focus is on using a batch process to generate a high-density cell culture and then infecting said culture. This thesis presents the approach of using a Design of Experiment series to change a …
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Design and fabrication of nanotweezers for nanomanipulation
… such devices are not fabricated using completely batch processes and lack the consistency, feature definition, and ease of production required for general use. In this project, we propose a completely batch fabricated nanotweezer designed for compatibility with the AFM. We have developed a …
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Chemical kinetic investigation of a commercial batch reactor process
… the chemical reactions occurring during the batchwise production of a butylated melamine-formaldehyde resin, in order to optimise the efficiency and economics of the batch processes. The batch process models are largely empirical in nature as the reaction mechanism is unknown. The process …
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Preparation, characterization and carrier gas transport characteristics of inorganic and organic membranes for application in lactic acid esterification with ethanol.
… most petrochemical solvents. The esterification process of lactic acid and ethanol to produce EL is an equilibrium-limiting reaction and the selective removal of one of the reaction products can be improved using a membrane reactor and when coupled with a heterogeneous catalyst offers an …
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Enzymatic Modification of Soy Proteins in an Ultrafiltration - Enzyme Reactor System
… which can be used only once in the traditional batch process, (b) the added cost of inactivating the enzyme either by changing pH or heat treatment at the end of the reaction, (c) they are energy and labor intensive, (d) because of their discontinuous nature, use equipment very inefficiently, …
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Continuous processing of multiphase reactions for pharmaceutical applications
… as an attractive alternative to the conventional batch processes. Numerous technologies have emerged to facilitate the development of continuous flow chemistry, and the benefits of flow chemistry have been successfully demonstrated for many chemistries that would otherwise be challenging in …
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Exception Handling in Recipe-Based Batch Control
… thesis is exception handling in recipe-based batch control. Exception handling is a critical element for achieving long-term success in batch production. It is reported to constitute 40-60 percent of the batch control design and implementation effort. Correct handling of exceptions is a key …
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Directional solvent extraction desalination
… brines (300,000 ppm) through a benchtop batch process, and recovery ratios as high as 85% for feed TDS of 35,000 ppm through a multi-stage batch process. We have also designed, constructed, and demonstrated a semi-continuous process prototype. The energy and economic analysis suggests …
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(ASYMMETRIC) PHOTOCATALYSIS UNDER HOMOGENEOUS AND HETEROGENEOUS CONDITIONS - OPTIMIZATION IN CONTINUO, NOVEL CATALYTIC REACTORS AND MATERIALS
… was greatly increased when comparing to the batch process, with significantly decreased catalysts loading. Ultimately the applicability of the material was proven by employing it in the telescoped synthesis of an approved antidiabetic drug – Mitiglinide in high yield and satisfactory …
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Design and utilization of chiral selectors for enantioselective membrane transport
… samples and that the continuous (as opposed to batch) process scale separation of enantiomers is feasible by this approach.
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Synthesis of fluorophlogopite using solid-state reaction techniques
A commercial solid-state batch process for the manufacturing of synthetic fluorophlogopite (KMg3A1Si3010F2) mica powder was evaluated and standardized. The minimum firing temperature and time for this process was determined to be 1000°C for 10 hours to both ensure the complete reaction of the raw …
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