Browsing Institutt for kjemisk prosessteknologi by Title
Now showing items 205-224 of 1784
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Cellulose Nanofibrils as Paper Additive and Coating Material: Properties, Distribution and Interaction Effects
(Doctoral theses at NTNU;2018:115, Doctoral thesis, 2018)Cellulose is well-known as the most common bio-polymer on earth. In the cell wall of most plants, it is organized in nanoscopic structures with interesting properties for a wide range of applications, among them as an ... -
Cellulose nanofibrils as rheology modifier in mayonnaise – A pilot scale demonstration
(Peer reviewed; Journal article, 2020)The applicability of cellulose nanofibrils (CNFs) as viscosifying agent in a starch-reduced low-fat mayonnaise and in an oil-reduced full-fat mayonnaise has been considered. For low-fat mayonnaise a 50 wt% reduction in the ... -
Cellulose nanofibrils as rheology modifiers and stabilizers in food systems
(Doctoral theses at NTNU;2020:291, Doctoral thesis, 2020)Food additives are components used in many food products to improve qualities such as flavor, appearance or texture. In low-fat and non-fat food products, food additives called fat-replacers are added to the food products ... -
Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO2/CH4 and CO2/N2
(Peer reviewed; Journal article, 2020)Carbonized cellulose -based hollow fiber membranes were prepared by dry-wet spinning phase inversion method, followed by carbonization and evaluated in terms of gas separation performance for CO2/N2 and CO2/CH4 mixtures, ... -
CeO2-ZrO2-WO3-based catalysts for Selective Catalytic Reduction of Nitrogen Oxides by Ammonia
(Master thesis, 2018)Cerium, zirconium and tungsten based catalysts with addition of 3% copper were prepared through the hydrothermal method and incipient wetness impregnation method. The three catalysts produced were named CZW (hydrothermal ... -
CFD Simulation of Concentration Sensor
(Master thesis, 2016)This thesis deals with the CFD modelling of a NaCl concentration sensor, specifically its pressure drop, but also velocity and pressure profile. The main goal of the work is twofold: firstly, to confirm whether the simulations ... -
Challenges Related to Analysis of Anions in Degraded Samples from Pilot and Lab Experiments
(Journal article; Peer reviewed, 2016)Analyses of degraded samples from CO2 capture experiments and pilots are complicated because of the diversity of the degradation compounds and the high amine and CO2 contents in the samples. Little work has been conducted ... -
Changing between Active Constraint Regions for Optimal Operation: Classical Advanced Control versus Model Predictive Control
(Journal article; Peer reviewed, 2018)Control structures must be properly designed and implemented to maintain optimality. The two options for the supervisory control layer are Advanced Control Structures (ACS) and Model Predictive Control (MPC). To systematically ... -
Characterisation of crude oil components, asphaltene aggregation and emulsion stability by means of near infrared spectroscopy and multivariate analysis
(Doctoral thesis, 2002)Effective separation of water-in-crude oil emulsions is a central challenge for the oil industry on the Norwegian Continental Shelf, especially with the future increase in subsea and even down-hole processing of well-fluids. ... -
Characterisation of gas-liquid interfaces related to offshore produced water treatment.: The effect of pH, brine and crude oil composition.
(Master thesis, 2013)Produced water is water co-produced with oil and gas during petroleum production. It is a very complex mixture and contains different compounds that can have negative impact on the environments. It is therefore important ... -
Characterisation of Gas-Liquid Interfaces related to Offshore Produced Water Treatment.: The Influence of Crude Oil Composition and different Brines with various pH.
(Master thesis, 2013)Produced water is an environmental toxic and complex mixture, which is co-produced during gas and oil production. The aim of this study is to investigate the surface tension of the produced water with a bubble pressure ... -
Characterisation of gas-liquid interfaces related to offshore produced water treatment: Interfacial activity of model components
(Master thesis, 2013)The amount of produced water during oil production is increasing as oil fields mature. Produced water is the largest source of pollution in the production phase, and can be treated by a method known as gas flotation. To ... -
Characterisation of liquid-liquid interfaces related to offshore produced water treatment - interfacial activity of model Components
(Master thesis, 2013)Produced water is one of the biggest environmental challenges in gas and crude oil production, and the stability of oil in water emulsions makes separation during treatments difficult.The objective of this work is to find ... -
Characterization and assessment of wax and wax inhibitors systems in microfluidic oil-in-water coalescence experiments
(Journal article; Peer reviewed, 2022)During produced water treatment, one of the key underlying phenomena affecting separation performance is coalescence between oil droplets. These processes can be affected by several factors, including chemical composition ... -
Characterization and modelling of aerosol droplet in absorption columns
(Journal article, 2017)Formation of aerosols can cause serious complications in industrial exhaust gas cleaning processes. Small mist droplets and fog formed can normally not be removed in conventional demisting equipment because their submicron ... -
Characterization and Modelling of Vapor Liquid Equilibrium of 1,3-Diaminopropane for CO2 Capture: - Using e-NRTL framework
(Master thesis, 2012)Carbon dioxide belongs to the class of greenhouse gases which are highly influential in global warming. Sometime ago, it was also proposed in some circles that Global warming is most like a conspiracy than a reality, but ... -
Characterization and Thermal/Catalytic Upgrading of Kerogen in a Green River Oil Shale
(Master thesis, 2015)Comprehensive structural characterization of oil shale (kerogen) and subsequent upgrading to fuels are of paramount scientific and industrial importance, calling for a better understanding. In this work, an oil shale from ... -
Characterization of 2-Piperidineethanol and 1-(2-Hydroxyethyl)piperidine as strong bicarbonate forming solvents for CO2 Capture
(Journal article; Peer reviewed, 2017)The solubility of CO2 in the aqueous solutions of 50 mass% 2-Piperidineethanol (2-PPE) and 40 mass% 1-(2-Hydroxyethyl)pyrrolidine (1-(2HE)PRLD) was measured at temperatures from 40 to 120 °C at CO2 loading from 0.04 to 0.8 ... -
Characterization of a solvent for chemical absorption-based CO2 capture
(Master thesis, 2021)The diploma thesis is focused on the thermodynamic characterization of an aqueous 3-amino-1-propanol (AP) solution, which is used as a promising solvent for post-combustion CO2 capture from exhaust gases. The theoretical ... -
Characterization of aerosol emissions from CO2 capture plants treating various power plant and industrial flue gases
(Journal article; Peer reviewed, 2018)Undesired aerosol formation in gas–liquid contact devices has been a well-known phenomenon in the chemical industry for several decades and can cause severe problems in industrial gas cleaning processes. Several studies ...