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 60 for “"Membrane technology"”.
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The selective separation and extraction of metals using membrane technology
… The work contained in this thesis shows the membrane extraction of the metals: Cobalt(II), Nickel(II). Iron(II) and Iron(III) in aqueous media using a polymer “entangled” membrane containing the extractant Aliquat 336 and PVC (polyvinylchloride).
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Membrane technology for the fabrication of three-dimensional photonic crystals
… of time and resources. We introduce large-area membrane stacking as a new approach for three-dimensional nanofabrication. Silicon-nitride membranes are pre-patterned with the two-dimensional photonic crystals. The membranes can then assembled in a serial manner on a substrate to generate the …
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Development of Forward Osmosis Based Separations: A Novel Approach in Membrane Technology
… the worldwide severe water shortage, the membrane technology is considered to be the most efficient approach and hence, used widely as a cost-effective sustainable solution. “Forward osmosis (FO)” has been the major attention in recent time. FO uses osmotic pressure as the driving force to …
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Recovery of Xylitol from Fermentation of Model Hemicellulose Hydrolysates Using Membrane Technology
… reduction or microbial fermentation. Current technology for commercial production is based on chemical reduction of xylose or hemicellulose, and xylitol is separated and purified by chromatographic methods. The resultant product is very expensive because of the extensive purification …
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Treatment and reuse of reactive dye effluent from textile industry using membrane technology
… requirements for the degree of Master of Technology in Engineering: Chemical Engineering, Durban University of Technology. Durban, South Africa, 2015.
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Continuous Production of Palm Methyl Esters With Recovery of Carotenoids Using Membrane Technology
… of the carotenoids from the esters using membrane technology. Reaction temperature affected significantly the batch transesterification of palm oil primarily in its initial stages. The optimum temperature and catalyst concentration were 60°C and 1% KOH, respectively. The kinetics of …
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Application of self-rolled-up membrane technology for enhanced neuron guidance and alignment
… the use of self-rolled-up silicon nitride (SiNx) membranes to culture neurons for future applications for neuroregenerative repair. Through initial characterization of neurite growth on the microtube platform, we demonstrate enhanced alignment of neurites along the microtube topography. Following …
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Fouling in membrane technology for produced water treatment: Assessing mechanisms, mitigation, and CFD Analysis
… sustainability has become a pressing reality. Membrane-based technologies for oily wastewater separation have grown in popularity due to their energy efficiency, chemical/thermal resistance, and low cost. The membrane can separate a wide range of oily wastewater effluents and deliver good …
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Treatment of Different Wastewaters and Lubricant Oil from Oil & Gas Industry Using Membrane Technology
L'abstract è presente nell'allegato / the abstract is in the attachment
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Advancing Industrial Decarbonization: Evaluating the State of Organic Membrane Technology for Class-Based Hydrocarbon Separation
… contributing to global temperature rise. As membrane separations have successfully reduced energy requirements in water purification and desalination, their application in organic separations, a challenging area to decarbonize, is gaining attention. With gas phase organic membrane separations …
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Membrane Processing of Ethanol -Extracted Corn Oil
The liquid extract was then concentrated using membrane technology, yielding a fraction that may include protein (zein), lecithins and other potentially high-value fractions soluble in ethanol, in addition to the corn oil. Investigation of the nature and extent of membrane fouling has also been …
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Development of chemical-free methods of fouling mitigation for membrane processes in desalination
… technologies has never been more pressing. While membrane technology, namely reverse osmosis (RO), currently stands as the most energy efficient desalination technology, it is plagued by fouling undercutting both productivity and permeate quality. To restore performance, desalination plants resort …
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Production of Zein From Dry Milled Corn by Solvent Extraction and Ultrafiltration
… using a combination of solvent extraction and membrane technology. Extraction of zein from dry milled whole corn was optimum with 70% ethanol at 50°C using a solvent-to-solids ratio of 6 ml ethanol per g corn for 45 minutes. Zein concentration in extract was 3--9 g/l. Continuous column …
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Design and utilization of chiral selectors for enantioselective membrane transport
… of a selector for use in hollow-fiber membrane systems. Several chromatographically developed selectors show promise for large scale separation of enantiomers using hollow-fiber membrane technology. Chiral selectors derived from N-(1-naphthyl)leucine have been used in a hollow-fiber …
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Applications of Membrane Aerated Biofilm Reactors for Wastewater Treatment
… means that the commercial application of membrane aerated biofilm reactors has not realized the potential that the published research demonstrates. <br/><br/>The early research demonstrated the ability of membrane aerated biofilm reactors to achieve good levels of pollutant removal from …
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Causes and analysis of failures in in-situ microscopy observation for the characterization of scaling in membrane distillation membranes
In membrane technology at large, fouling limits membrane performance and membrane lifespan. In the case of reverse osmosis membrane distillation (MD) involving fluid mixtures of inorganic elements, inorganic foulants build up on membrane surfaces, and reduce the flux of fluids across a membrane. …
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Preliminary framework for quantitative sustainable design of redox-mediated electrodialysis for biorefinery separations
… is one particular class of electrochemical technology that can contain novel layer-by-layer (LBL) membranes and employ a modified cell pair and redox-flow platform. Environmental and chemical engineering industries are gaining interested in modeling redox-ED as it possible that modern …
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Hybrid organic-inorganic pervaporation membranes for desalination
Membrane desalination using reverse osmosis (RO) has been the leading candidate technology for supplying fresh water in recent years. However, there is a strong motivation for improving the established membrane process and/or developing alternative membrane technologies to overcome the limitations …
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Biological treatment and recycling of textile processing effluents
… culture bioprocess was also combined with membrane filtration technology to improve effluent treatment. Oecolourised, filtered effluents showed great reduction in COO, BODs and toxicity levels, and were found suitable for re-use in ~yeing processes. Dyed cotton fabrics did not show any …
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