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 20 for “"CO2-separation"”.
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Graphene based mixed matrix membranes for CO2 separation
L'abstract è presente nell'allegato / the abstract is in the attachment
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CO2 Separation Using Regenerable Magnesium Solutions Dissolution, Kinectics and VLSE Studies
… for a considerable amount of total anthropogenic CO2 emissions throughout the world. CO2 capture and sequestration from point source emitters like fossil fuel power plants is essential to mitigate the harmful effects of greenhouse gases. A novel post-combustion CO2 capture technique has been …
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Block copolymer Ion gels for CO2 Separations
… thesis project, the target is to study the gas separation performance of ion gels for CO2 separation, and seek ways to optimize their properties in terms of the gas separation performance and mechanical strength. Ionic liquids have shown great promise as novel CO2-separation media, largely due …
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Simulation and optimization of hot syngas separation processes in integrated gasification combined cycle
IGCC with CO2 capture offers an exciting approach for cleanly using abundant coal reserves of the world to generate electricity. The present state-of-the-art synthesis gas (syngas) cleanup technologies in IGCC involve cooling the syngas from gasifier to room temperature or lower for removing …
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Economic evaluation of leading technology options for sequestration of carbon dioxide
… energy resources. However, a major barrier to CO2 capture and sequestration is Its cost. This thesis presents the results of a detailed analysis of costs associated with today's technology for CO2 separation and capture at three types of power plants: Integrated Gasification Combined Cycles …
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Thermodynamics of ionic liquid solvents in gas purification and exfoliation mechanisms: molecular dynamics simulation and Monte Carlo calculations
… involved different approaches for reducing CO2 emission to the atmosphere. In the first study, the exfoliation of bismuth telluride (Bi2Te3) as a well-know thermoelectric (TE) material was investigated. In the literature, it has been experimentally and computationally proven that producing a …
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Hyperbranched And Polydimethylsiloxane Based Membranes For CO2 Capture
… the many methods currently being explored for CO2 separation, membranes have proven to be a promising solution. This thesis examines three types of possible membranes: composite layer membranes, hyperbranched membranes and dense film membranes. In addition to examining the permeance of each …
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Biphasic Cellulose Acetate/Rtil Membranes And Functionalized Graphene Adsorbents For Natural Gas Processing: Experimental And Molecular Simulation Studies
In this dissertation, gas separation using membranes is investigated for natural gas upgrading. The main objectives of this study are separation of high value hydrocarbons such as propane (c3h8) from natural gas and carbon dioxide (co2) separation from light gases such as nitrogen (n2) and methane …
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Carbon Dioxide Gas Separation from Syngas to Increase Conversion of Reverse Water Gas Shift Reaction via Polymeric and Mixed Matrix Membranes
… are a promising, effective and energy efficient separation strategy for effluent gases in the Reverse Water Gas Shift (RWGS) reaction to increase the overall conversion of CO2 to CO. This process involves a separation and recycling process to reuse the unreacted CO2 from the RWGS reactor. The …
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Direct synthesis gas conversion to alcohols and hydrocarbons using a catalytic membrane reactor.
… carbon dioxide, thus eliminating the need for a CO2 separation interphase between synthesis gas production and Fischer-Tropsch synthesis. Catalytic tests conducted with the membrane reactor with different operating conditions (of temperature, pressure and feed flow rate) on cobalt-based membranes …
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Synthesis and Characterization of High Performance Polymers for Gas Separation and Water Purification Membranes and as Interfacial Agents for Thermplastic Carbon Fiber Composites
… specifically polybenzimidazoles (PBIs) for gas separation applications and polyimides (PI) for water purification and as interfacial agents for thermoplastic carbon fiber composites. Two methods for improving the gas transport properties (for H2/CO2 separation) of a tetraaminodiphenylsulfone …
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Selective gas adsorption of gas-water mixtures in nanoscale systems and its application to gas separation
… study about various gas-water mixtures, such as CO2-water, O2-water and H2-water mixtures, through CNTs by performing molecular dynamics simulations. For all the three CO2-water, O2-water and H2-water mixtures, we observed adsorption of gases into the CNTs. The gas molecules formed single-file …
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Technoeconomic analysis of a steam generation system with carbon capture
… gas (NG) and contributes significantly to CO2 emissions. Existing boiler technology is relatively inefficient, and its continued adoption could potentially be hampered by carbon emissions taxes due to the difficulty in CO2 separation from the dilute exhaust gas stream. This paper presents …
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Design Method for Layered Bed Adsorber for Separation of CO2 and N2 from Natural Gas Using ZEOLITE13X, Carbon Molecular Sieve and Activated Carbon
… that carries impurities such as carbon dioxide (CO2) and nitrogen (N2). These two impurities reduce the heating value of NG. Also, CO2 causes corrosion in the pipeline and N2 produces nitrogen oxide (NOx) when combusted. These facts have forced NG transmission and distribution companies to limit …
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Collaborative Simulation of Reacting Flow and Controller in Chemical Looping Systems
… (OCs) to facilitate fuel conversion and inherent CO2 separation. However, current research methods provide limited insight into detailed in-reactor behaviours and system responses to advanced controllers, leaving operational challenges unresolved. This thesis introduces an innovative collaborative …
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Experimental characterization and machine learning optimization of polymer nanocomposite membranes for carbon capture systems
The study aimed to characterize the CO2 capture capabilities of Polyacrylonitrile (PAN) nanocomposite membranes by reinforcing them with multi-walled carbon nanotubes (MWCNT) and silica (SiO2). These membranes were made using the electrospinning manufacturing method. The nanoparticles were …
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Innovative Materials and Processes for Enhanced CO2 Capture and Conversion
L'abstract è presente nell'allegato / the abstract is in the attachment
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CO2-Abtrennung aus Gasströmen durch Absorption in Poly(methyldiglykol)amin
… Dissertation wird ein Prozess für die absorptive CO2-Abtrennung aus Gasströmen vorgestellt, der durch die Nutzung des neu entwickelten Waschmittels GenosorbN in einem Postcombustion-Prozess einen geringeren Energiebedarf als bisher bekannte Verfahren aufweist. Für die Nachrüstung bereits …