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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 ... -
The Effect of the Absorber Design and Operating Conditions on the MEA Emissions and Energy Consumption in an Absorption-Based Carbon Capture Plant
(Master thesis, 2021)Industri er en av de største kildene til menneskeskapte utslipp av klimagasser. Absorpsjons- basert CO2-fangst er et viktig skadebegrensningstiltak for å redusere CO2 utslippene og sikre en bærekraftig fremtid. En av ... -
The Effects of Alginate Additives on Calcium Phosphate Mineralization
(Doctoral theses at NTNU;2017:231, Doctoral thesis, 2017)Nature produces a variety of highly functional composite structures by the combination of organic and inorganic constituents and these composites stand as a central source of interest and inspiration for tissue engineering ... -
The effects of pH, time and temperature on the stability and viscosity of cellulose nanocrystal (CNC) dispersions: implications for use in enhanced oil recovery
(Journal article; Peer reviewed, 2017)Cellulose nanocrystals (CNC) are currently being investigated as potential additives for enhanced oil recovery (EOR). Presented in this paper is a study investigating the effects of different physical and chemical environments ... -
The Fluid Flow Equations in General Curvilinear Coordinates solved with the SIMPLE Algorithm on a Staggered Curvilinear Grid
(Master thesis, 2021)Hovedmålet i denne mastergraden var å modellere strømningene over et bakovervendt steg ved å bruke SIMPLE algoritmen med et forskjøvet ikke-ortogonalt kurvelineært rutenett. SIMPLE ligningene ble løst i det beregnende ... -
The formation and characterization of sustainable layered films incorporating Microfibrillated Cellulose (MFC)
(Journal article; Peer reviewed, 2012)Microfibrillated cellulose (MFC), TEMPO-pretreated MFC, and hybrid polymer/MFC mix were used for the production of layered films with interesting properties for application in food packaging. The series of samples were ... -
The impact of sequential H2-CO-H2 activation treatment on the structure and performance of cobalt based catalysts for the Fischer-Tropsch synthesis
(Journal article; Peer reviewed, 2018)Different activation protocols were applied to a promoted Re/Co/γ-Al2O3 catalyst for Fischer-Tropsch synthesis. The activation included treatment in either pure H2 or a sequence of Reduction (H2) – Carburization (CO) – ... -
The Influence of Differently Shaped Gold Nanoparticles Functionalized with NIPAM-Based Hydrogels on the Release of Cytochrome C
(Journal article; Peer reviewed, 2017)Here, we report the synthesis and functionalization of five different shapes of Au nanoparticles (NPs), namely nanorods, tetrahexahedral, bipyramids, nanomakura, and spheres with PEG and poly (N-isopropylacrylamide)-acrylic ... -
The influence of furnish composition, sheet structure and pressing conditions on wet pressing performance of newsprint
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:59, Doctoral thesis, 2012)The choice of furnish in newsprint production is dictated by the raw material costs, production cost and the final quality demanded by printers. In addition to the raw material costs, energy cost is a major factor in ... -
The Influence of Salts with Different Cation Valency on Oil-in-Water Emulsion Stability
(Master thesis, 2015)The effect of different emulsion preparation parameters on the stability of oil-in-water (o/w) emulsions has been studied by varying the preparation parameters and then observing the emulsion visually. Change in the turbidity ... -
The Least-Squares Spectral Element Method Solution of the Gas-Liquid Multi-fluid Model Coupled with the Population Balance Equation
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:264, Doctoral thesis, 2009)This thesis work concentrates on the modelling of dispersed bubbly flow encountered widely in the chemical, oil & gas and nuclear industries. The computational fluid dynamics (CFD) that provides detailed information of ... -
The potential of TEMPO-oxidized cellulose nanofibrils as rheology modifiers in food systems
(Journal article; Peer reviewed, 2019)Cellulose nanofibrils (CNFs) have been proposed for use in low-fat food products due to their availability and excellent viscosifying and gel forming abilities. As the CNFs are negatively charged, the presence of other ... -
The potential of zero total charge and electrocatalytic properties of Ru@Pt core-shell nanoparticles
(Journal article; Peer reviewed, 2019)Electrocatalysis of the oxygen reduction reaction (ORR), oxidation of carbon monoxide, and the methanol oxidation reaction (MOR) are all critical to the performance of direct-methanol fuel cells (DMFC). In this work we ... -
The relevance of acidic groups and metal ions in the production and end use of super-calendered (SC) magazine paper
(Doctoral thesis at NTNU;2014:283, Doctoral thesis, 2014)In this thesis, clay-induced discolouration of mechanical pulp and the electrostatic properties of supercalendered (SC) magazine paper have been investigated. New knowledge has been established in both areas. It was shown ... -
The role of carbon supports in platinum catalyzed hydrogenation/ dehydrogenation model reactions
(Doctoral thesis at NTNU;2015:221, Doctoral thesis, 2015)giving a higher turnover frequency, the propane dehydrogenation reaction over Pt supported on carbon black was less susceptible to deactivation in experiments without co-fed hydrogen, indicating that the carbon black ... -
The role of H2S addition on Pt/Al2O3 catalyzed propane dehydrogenation: a mechanistic study
(Journal article; Peer reviewed, 2019)Introducing sulfur species into Pt catalysts has been proven to be an effective method to improve their performance in various reactions. However, the role of sulfur addition on Pt catalysts catalyzing propane dehydrogenation ... -
The Salting-out Effect in Some Physical Absorbents for CO2 Capture
(Journal article; Peer reviewed, 2018)The solubility of CO2 in organic solvents N-methyl-2-pyrrolidone (NMP), methanol and monoethylene glycol (MEG) at 30 °C was measured together with its heat of absorption. The salts lithium nitrate (LiNO3), lithium chloride ... -
A theoretical and experimental investigation of batch oil-water gravity separation
(Peer reviewed; Journal article, 2023)Gravity separation of oil-water emulsions is an industrially crucial process. Mechanistic models for a batch separation process can immensely be beneficial by linking emulsion experimental characterization to optimal ...