Browsing Institutt for kjemisk prosessteknologi by Title
Now showing items 1628-1647 of 1767
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Terbium Doped ITO Thin Films Prepared by an Aqueous Sol-Gel Method
(Master thesis, 2013)Transparent conducting oxides (TCOs) combine the properties of optical transparency in the visible region of the electromagnetic spectrum and a near-metallic electrical conductivity. This combination make them very applicable ... -
Testing and Optimization of Nano Particles Reinforced PVAm/PVA Blend FSC Membranes for High Pressure Natural Gas Sweetening
(Master thesis, 2012)Employing gas separation membranes for natural gas sweetening is a cheaper, simpler, more energy ecient and an environmentally friendly alternative to separate CO2 from methane. Signicant advances has been made in ... -
Testing and Optimization of PVAm/PVA Blend Membranes for Biogas Upgrading
(Master thesis, 2012)Membrane technology is an energy saving, environment friendly and low cost separation technology. This master’s thesis has focused on testing and optimization of polyvinylamine/polyvinylalcohol (PVAm/PVA) blend fixed-site-carrier ... -
Testing of large-scale CNF synthesis reactor
(Master thesis, 2012)CNFs were synthesized on supports to develop structured catalysts for water treatments. Estimation tasks of reactants and electrical power needs were accomplished. The supports are made up of carbon felt exchanged with ... -
The application of pulse field gradient (PFG) NMR methods to characterize the efficiency of separation of water-in-crude oil emulsions
(Journal article; Peer reviewed, 2018)Demulsification of water-in-crude oil emulsions is an essential and sometimes challenging procedure for crude oil processing facilities. Pulse field gradient (PFG) NMR techniques are known to monitor the dynamics of emulsion ... -
The beginning and the end of gene expression
(Doctoral thesis at NTNU;2016:8, Doctoral thesis, 2016)Summary of thesis: Gene expression -- the synthesis of RNA and protein -- requires most of the cell's energy and is a highly regulated process at all its levels. In this thesis, regulation of gene expression has been ... -
The beginning and the end of gene expression
(Doctoral thesis, 2016-09-09) -
The effect of aerosol-deposited ash components on a cobalt-based Fischer–Tropsch catalyst
(Journal article; Peer reviewed, 2019)The effect of ash salts on Co-based Fisher–Tropsch catalysts was studied using an aerosol deposition technique. The major elements in the ash were found to be K, S and Cl. The ash was deposited on a calcined catalyst as ... -
The Effect of Calcium Ions on Oil-Brine-Surfactant Interfacial Properties and the Relation to Surfactant Enhanced Oil Recovery at Low Salinity
(Doctoral thesis at NTNU;2015:228, Doctoral thesis, 2015)The present thesis addresses the effect of calcium ions on the interfacial chemistry between oil and solutions of anionic surfactants, and its relevance for enhanced oil recovery (EOR) methods at low salinity. A number ... -
The effect of calcium/sodium ratio on the dynamic adsorption of sodium dodecyl benzene sulfonate (SDBS) onto water/air interfaces. Evaluation of critical micelle concentrations, diffusion coefficients and molecular areas
(Master thesis, 2016)Test how calcium/sodium-ratio affect the dynamic adsorption of sodium dodecyl benzene sulfonate (SDBS) onto water/air interfaces where the ionic strength is kept constant at 20 mM, with the use of maximum bubble pressure ... -
The Effect of Copper Loading on Iron Carbide Formation and Surface Species in Iron‐Based Fischer–Tropsch Synthesis Catalysts
(Journal article; Peer reviewed, 2018)The effect of copper as promoter on iron carbide formation and the nature of surface species on iron‐based catalyst during Fischer–Tropsch synthesis (FTS) was investigated. Iron‐based catalysts (15 wt % of Fe) supported ... -
The effect of dissolved gas on coalescence of oil drops studied with microfluidics
(Journal article; Peer reviewed, 2018)Hypothesis In literature it is stated that the stability of oil-in-water emulsions could be enhanced by decreasing the so-called “hydrophobic interactions” between surfaces through removal of dissolved atmospheric gases. ... -
The effect of fibre wall thickness and microfibril angle on TMP energy consumption, fibre development and paper properties
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:117, Doctoral thesis, 2011)The overall objective of the “Basic phenomena in mechanical pulping” project financed by NER (the Nordic Energy Research) of which the PhD study was a part, was to show a radical reduction (30%) in specific energy consumption ... -
The Effect of Liquid Exposure on PTMSP/TiO2 Nanocomposite Membranes for Gas-Liquid Membrane Contactors for Removal of CO2 from Natural Gas
(Master thesis, 2014)This project concerns the development of membrane materials for use in gas-liquid membrane contactors for the removal of CO2 from natural gas. In this application, the membrane is primarily intended to prevent any phase ... -
The effect of MEG (mono ethyleneglycol) on the precipitation kinetics of calcium carbonate related to natural gas production from subsea wells
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:44, Doctoral thesis, 2010)Injection of inhibitors for gas hydrate formation during transportation of wet gas/condensate in pipelines strongly affects the tolerance for produced formation water. The use of mono ethylene glycol (MEG) as hydrate ... -
The Effect of Metal Promoters on Supported Cobalt Catalysts for the Fischer-Tropsch Synthesis
(Master thesis, 2021)I dette arbeidet ble effekten av forskjellige metallpromotorer på katalysatorer med 20 vekt-% kobolt for Fischer-Tropsch Syntesen (FTS) undersøkt. Metallene som ble studert var Ru, Re og Pt på Co/Al2O3 og Co/TiO2 katalysatorer, ... -
The Effect of Noble Metal Promoters on Hydrotalcite-Based Nickel-Cobalt Catalysts for Syngas Conditioning for Advanced Biofuels
(Master thesis, 2023)Konvertering av biomasse til drivstoff ved hjelp av gassifisering og Fischer-Tropsch hydrokarbonsyntese er et fremtredende og bærekraftig alternativ til drivstoffproduksjon fra fossile kilder. Imidlertid utgjør dannelse ... -
The Effect of Oil on Carbon Dioxide Corrosion Inhibition on Carbon Steel - Potential for Improved Corrosion Protection
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:20, Doctoral thesis, 2010)The search for robust and cost efficient ways to prevent internal corrosion of carbon steel piping and equipment in oil and gas production and transportation has lead to the development of highly sophisticated CO2 corrosion ... -
The Effect of Potassium on Cobalt-based Fischer-Tropsch Catalysts of Small and Medium Cobalt Particle Sizes
(Master thesis, 2018)The effect of potassium on a 20 wt.% Co - 0.5 wt.% Re/-Al2O3 catalyst consisting of small and medium cobalt particle sizes were investigated. The particle sizes were adjusted by using different mixtures of ethylene glycol ... -
The Effect of Potassium on Cobalt-Based Fischer– Tropsch Catalysts with Different Cobalt Particle Sizes
(Journal article; Peer reviewed, 2019)The effect of K on 20%Co/0.5%Re/γ-Al2O3 Fischer–Tropsch catalysts with two different cobalt particle sizes (small, in the range 6–7 nm and medium size, in the range 12–13 nm) was investigated. The catalyst with the smaller ...