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Mapping Diluents for Water-Lean Solvents: A Parametric Study
(Peer reviewed; Journal article, 2020)Water-lean solvents are typically defined as mixtures between an organic diluent and an amine. These solvents are thought to deliver potential benefits in CO2 capture systems, such as enhanced mass transfer properties, ... -
Mapping of Vapor-Liquid Equilbrium Data for: 1,3-diaminopropane (1,3-DAP) - Experiments and modeling
(Master thesis, 2014)Et nytt sett av datapunkter for et tærnert damp-væske likevektssystem av H2O, CO2 and 1,3-diaminopropan (1,3-DAP) er kartlagt i dette arbeidet. Dataene ble funnet ved bruk av to type apparaturer, der faselikevekt og kjemisk ... -
Mass transfer study for carbon dioxide capture in a gas-liquid membrane contactor
(Master thesis, 2011)Emission of green house gases especially CO2 has become a major environmental issue. In order to control and reduce the CO2 emissions, carbon capture and storage (CCS) is an important tool. Removal of acidic gases by ... -
Materialstrømanalyse for aluminium i Norge
(Master thesis, 1998)Oppgavens hovedformål har vært å kartlegge materialflyten av aluminium i Norge. Hensikten med en slik kartlegging var å drøfte dagens og fremtidens resirkuleringsgrad i relasjon til teknologisk løsning og økologisk ... -
Mathematical Modeling and Process Parametric Study of CO2 Removal from Natural Gas by Hollow Fiber Membranes
(Journal article; Peer reviewed, 2019)Hollow fiber membranes show a great potential in natural gas sweetening by removing CO2 to meet gas grid specifications. A membrane model with high prediction accuracy is developed to model multicomponent gas transport ... -
Mathematical modeling and simulation of hydrogen-fueled solid oxide fuel cell system for micro-grid applications - Effect of failure and degradation on transient performance
(Peer reviewed; Journal article, 2020)We use a detailed solid oxide fuel cell (SOFC) model for micro-grid applications to analyze the effect of failure and degradation on system performance. Design and operational constraints on a componentand system level are ... -
Mathematical modeling and validation of CO2 mass transfer in a membrane contactor using ionic liquids for pre-combustion CO2 capture
(Journal article; Peer reviewed, 2017)Mass transfer and mathematical modelling of CO2 absorption in a tubular membrane contactor using 1-Butyl-3-methylimidazolium Tricyanomethanide ([Bmim][TCM]) for pre-combustion CO2 capture has been studied in this work. A ... -
Mathematical Modelling and Process Simulation of a Membrane Absorption Process for Pre-combustion CO2 Capture
(Doctoral theses at NTNU;2017:216, Doctoral thesis, 2017)The greenhouse gas emissions, particularly CO2, are significantly impacting the global climate change. There are strong desires to find energy efficient and economical solutions for CO2 capture from energy production, ... -
Mathematical Multi-physics Modeling and Simulation of a Solid Oxide Fuel Cell Unit for Thermo-Mechanical Stress Analyses
(Peer reviewed; Journal article, 2020)We use a mathematical model of a solid oxide fuel cell (SOFC) unit for stress analyses. The model comprises a thermo-electrochemical-chemical performance model that calculates the temperature field in the solid part which ... -
Måling av reaksjonsvarme og gass-/væskelikevekt for CO2 fangst i solventer med to væskefaser
(Master thesis, 2016)Absorpsjon av CO2 ved bruk av aminer er en velutviklet teknologi for CO2-fangst. Likevel er det stort forbedringspotensial ved dagens teknologi, relatert til blant annet høyt energiforbruk, degradering av aminer og ... -
Measurement and Modeling of Physical Properties of Amines
(Master thesis, 2013)Calibrate the high pressure viscometer at different temperatures and pressure. Measure the viscosity and density for MDEAsystems and DMMEAsystems, unloaded and loaded with CO2. Modeling of the measured properties. -
Measurement and prediction of oxygen solubility in post-combustion CO2 capture solvents
(Peer reviewed; Journal article, 2020)This work aims to understand oxygen solubility in pure and aqueous amine solvents for CO2 capture. Commercially available dissolved oxygen sensors were studied to evaluate whether these can be used for measuring oxygen ... -
Measurements of the Viscosity of Hydrogen and a (Hydrogen + Methane) Mixture with a Two-Capillary Viscometer
(Journal article; Peer reviewed, 2024)Measurements of the viscosity of pure hydrogen and a binary (hydrogen + methane) mixture with a nominal composition 90 mol % hydrogen are presented. The measurements were conducted with a two-capillary viscometer relative ... -
Measuring and model CO2 solubility in amine aqueous solution
(Master thesis, 2017)Absorption by amines is the most mature technology for CO2 capture. In this context, two alkanolamines: 2-piperidine-ethanol (2-PPE) and 1-(2-hydroxyethyl)-pyrrolidine (1-2HE-PRLD) are being investigated in this work. Ternary ... -
Measuring filter-cake cohesive strength and flowability
(Peer reviewed; Journal article, 2022)The filter-cake has a critical role in temporarily reducing the permeability of the wellbore to prevent issues such as lost circulation, formation damage, wellbore collapse and differential sticking. The filter-cake's ... -
Measuring gas-liquid mass transfer in very small bubbles
(Master thesis, 2018)Modern industry is always striving for process optimization and reducing emissions, which in many cases requires an accurate modeling of interfacial gas-liquid mass transfer. To study the interfacial gas-liquid mass ... -
Mechanical and Thermal Properties of Carboxymethyl fibers (CMF)/PVA based nanocomposite membranes
(Peer reviewed; Journal article, 2020)Carboxymethyl fibers (CMF) of cellulose are renewable biopolymer and have shown strong reinforcing properties when added to a compatible polymer matrix. The objective of this study was to investigate the effect of CMF on ... -
Mechanical properties of cellulose nanofibril films: effects of crystallinity and its modification by treatment with liquid anhydrous ammonia
(Journal article; Peer reviewed, 2019)The influence of cellulose crystallinity on mechanical properties of cellulose nano-fibrils (CNF) was investigated. Degree of crystallinity (DoC) was modified using liquid anhydrous ammonia. Such treatment changes crystal ... -
Mechanical properties of composite hydrogels of alginate and cellulose nanofibrils
(Journal article; Peer reviewed, 2017)Alginate and cellulose nanofibrils (CNF) are attractive materials for tissue engineering and regenerative medicine. CNF gels are generally weaker and more brittle than alginate gels, while alginate gels are elastic and ... -
Mechanical, thermal and swelling properties of cellulose nanocrystals/PVA nanocomposites membranes
(Journal article; Peer reviewed, 2018)Cellulose nanocrystals (CNC) have strong reinforcing properties when incorporated in a compatible polymer matrix. The study was conducted to investigate the effect of addition of different proportions of CNC on the mechanical, ...