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Mitigation and remediation of asphaltene precipitation, deposition and plug formation: Importance of asphaltene subfractions
(Doctoral theses at NTNU;2017:110, Doctoral thesis, 2017)Asphaltenes represent the heaviest and most polar constituent of petroleum. They consist of a wide range of molecules differing in molecular weight and functional groups. Under reservoir conditions, the asphaltenes generally ... -
Mixed Matrix Membranes Based on Fluoropolymers with m- And p-Terphenyl Fragments for Gas Separation Applications
(Peer reviewed; Journal article, 2021)Novel mixed matrix membranes (MMMs) based on fluoropolymers with m- and p-terphenyl fragments and NaX zeolites were prepared. The fluoropolymers were synthesized by a one-pot, room-temperature, metal-free superacid-catalyzed ... -
Mixing of cellulose nanofibrils and individual furnish components: Effects on paper properties and structure
(Journal article; Peer reviewed, 2016)Thermo-mechanical pulp (TMP) handsheets with different fractions of cellulose nano fibrils (CNF) and ground calcium carbonate (GCC) were made. CNF and retention chemicals were added in three different ways; to GCC, to long ... -
Mn promoted Co catalysts for Fischer-Tropsch production of light olefins – An experimental and theoretical study
(Journal article; Peer reviewed, 2018)Three different CoMn/gamma-Al2O3 catalysts were prepared by the incipient wetness impregnation route and compared to a Co/gamma-Al2O3 catalyst. The effect of co-impregnation vs. sequential impregnation as well as the order ... -
Mn promotion effects in Co based Fischer-Tropsch production of light olefins
(Doctoral theses at NTNU;2018:180, Doctoral thesis, 2018)In this work, Mn promotion of γ-Al2O3 supported Co catalysts was investigated for the purpose of producing light olefins via the Fischer-Tropsch synthesis process. CoMn/γ-Al2O3 catalysts were prepared by the incipient ... -
Model catalysts for Fischer-Tropsch synthesis
(Master thesis, 2014)Today, Fischer-Tropsch synthesis is the key process in the production of liquid fuels from synthesis gas (a mixture of CO + H2). This mixture can be obtained from fossil fuels (oil, natural gas or coal) and from renewable ... -
Model Compounds for Heavy Crude Oil Components and Tetrameric Acids: Characterization and Interfacial Behaviour
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:173, Doctoral thesis, 2009)The tendency during the past decades in the quality of oil reserves shows that conventional crude oil is gradually being depleted and the demand being replaced by heavy crude oils. These oils contain more of a class ... -
A Model Library for Oil/Water Emulsion Separation and Transport Processes
(Doctoral thesis, 2023)In the petroleum industry, the separation and transportation of multiphase fluids, especially crude-oil and water emulsions, hold immense economic and environmental significance. Thus, development of fundamentally advanced, ... -
Model molecules mimicking asphaltenes
(Journal article; Peer reviewed, 2015)Asphalthenes are typically defined as the fraction of petroleum insoluble in n-alkanes (typically heptane, but also hexane or pentane) but soluble in toluene. This fraction causes problems of emulsion formation and ... -
A Model of Synovial Fluid with a Hyaluronic Acid Source: A Numerical Challenge
(Journal article; Peer reviewed, 2021) -
Model Predictive Control for a De-oiling Hydrocyclone: A Theoretical and Experimental Study
(Master thesis, 2021)Utslipp av produsert vann er en voksende bekymring på grunn av den negative miljøpåvirkningen. En potensiell løsning er de-oiling hydrosykloner, som er den mest brukte teknologien for å rense produsert vann. Compact Separator ... -
Model predictive control for combined cycles integrated with CO2 capture plants
(Peer reviewed; Journal article, 2021)Flexible thermal power plants integrated with CO2 capture systems can balance the intermittent power generation of renewable energy sources with low-carbon electricity. Among these power systems, natural gas combined cycles ... -
Model predictive control of a polyolefin reactor
(Master thesis, 2015)Two models for the copolymerization of propylene and ethylene in a fluidized bed reactor (FBR) were developed. A simple model for control; and a more advanced model which served as both a replacement for logged industrial ... -
Model predictive control of an LNG liquefaction process using Jmodelica.org
(Master thesis, 2018)In this thesis Model Predictive Control (MPC) theory has been used to develop a controller for a Liquefied Natural Gas (LNG) liquefaction process using the Jmodelica.org framework. Jmodelica.org is an open source platform ... -
Model Predictive Control of bioreactors based on the Escherichia coli core metabolic network model
(Master thesis, 2023)Optimal kontroll av prosesser er viktig for å sikre effektiv og trygg operasjon av prosessanlegg. Den økende populariteten og bruken av Dynamisk Fluks Balanse Analyse (dFBA) modeller har gjort det mulig å ta i bruk mer ... -
Model studies of secondary hydrogenation in Fischer-Tropsch synthesis studied by cobalt catalysts
(Doktoravhandlinger ved NTNU, 1503-8181; 2003:29, Doctoral thesis, 2003)Mass transfer effects are very important in Fischer-Tropsch (FT) synthesis. In order to study the FT synthesis without the influence of any transport limitations, cobalt foils have been used as model catalysts. The effect ... -
Model-aided catalyst prediction through descriptor-based hybrid semi-empirical approach
(Doctoral theses at NTNU;2019:67, Doctoral thesis, 2019)Model-aided catalyst prediction through descriptor-based hybrid semi-empirical approach Microkinetic model aided catalyst prediction is an advanced method for developing improved and novel catalysts without intensive ... -
Model-based characterization of mili-reactor
(Master thesis, 2013)This thesis focuses on development of a functioning, reliable and representative computation fluid dynamics model of milli-reactors in OpenFOAM in order to characterize them. Characterization and validation of the model ... -
Modeling and Analysis of a Batch Gravity Separation of an Oil and Water Emulsion
(Master thesis, 2014)A model for simulating the separation of an emulsion in a batch gravity settler was tested. This model is based on a population balance which considers a non-uniform droplet distribution, where coalescence occurs simultaneously ... -
Modeling and Characterization of Liquid Vapor Equilibrium of N-methyl-1,3-Propanediamine for CO2 Capture - Using the Extended UNIQUAC Framework
(Master thesis, 2011)In this work the loaded MAPA system has been thermodynamically characterized. This was done by measuring the phase- and chemical equilibrium in the laboratory, as vapor - liquid - equilibrium data. A thermodynamical model ...