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Pressurized Reduction of Cu-ZnO Water-Gas Shift Catalysts in Presence of Water
(Master thesis, 2015)CuO/ZnO/Al2O3 is a commonly used catalyst for the commercialized water gas shift reaction. Prior to industrial use, CuO has to be reduced to the active metallic copper phase. Yara has experienced major issues as a consequence ... -
Process Concepts for Dehydration of Captured CO2
(Master thesis, 2023)I karbonfangst vil det veldig sjelden fanges helt ren CO2, og det vil typisk være noen urenheter i gasstrømmen, deriblant vann. Dette kan skape problemer for prosessutstyr og transport, og det er derfor ønskelig å senke ... -
Process Integration Applied to the Design and Operation of Distillation Columns
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:24, Doctoral thesis, 2004)Process integration of distillation columns with focus on multi-effect distillation is studied in this thesis. Columns are integrated by using different pressures, so that the condensing duty of one column can be used to ... -
Process Integration of Green Hydrogen: Decarbonization of Chemical Industries
(Journal article; Peer reviewed, 2020)Integrated water electrolysis is a core principle of new process configurations for decarbonized heavy industries. Water electrolysis generates H2 and O2 and involves an exchange of thermal energy. In this manuscript, we ... -
Process Modeling of a Biorefinery for Integrated Production of Ethanol and Furfural in HYSYS
(Master thesis, 2016)Existing bioethanol production relies heavily on the use of corn and sugarcane as feedstocks. A prerequisite for increased consumption of bioethanol is the transition from the current use of corn and sugarcane to lignocellulosic ... -
Process modelling on a canonical basis
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:71, Doctoral thesis, 2006)Based on an equation oriented solving strategy, this thesis investigates a new approach to process modelling. Homogeneous thermodynamic state functions represent consistent mathematical models of thermodynamic properties. ... -
Process Optimization of Biogas Upgrading with AMP Using Pilot Plant Data and Simulations with Aspen Plus
(Master thesis, 2016)In gaseous biofuel production mixtures of CO2, CH4 and/or H2 and are typically produced. When using these gaseous for example in fuel cell applications (H2) or as vehicle fuel (CH4) gas upgrading is needed. Upgrading ... -
Process Simulation and Cost Evaluation of Carbon Membranes for CO2 Removal from High-Pressure Natural Gas
(Journal article; Peer reviewed, 2018)Natural gas sweetening is required to remove the acid gas CO2 to meet gas grid specifications. Membrane technology has a great potential in this application compared to the state-of-the-art amine absorption technology. ... -
Process Simulation of a Hybrid Fuel Cell System for Clean and Highly Efficient Offshore Power with Carbon Capture
(Master thesis, 2017)Today, offshore power is mainly produced onsite by gas turbines and the process is responsible for the majority of the CO2-emissions from the Norwegian offshore industry. To reduce CO2-emissions offshore, electrification ... -
Produced Water Quality and Microfluidic Methods for Studying Drop-Drop and Drop-Bubble Interactions in Produced Water
(Doctoral theses at NTNU;2018:198, Doctoral thesis, 2018)Produced water originates from crude oil production, during which it is extracted to the surface together with hydrocarbons. It consists of various dissolved and dispersed components, such as dissolved organic and inorganic ... -
Production of 2nd generation dolomite-based solid sorbents for high-temperature CO2 capture
(Master thesis, 2022)Verden står overfor en stadig økende miljøtrussel forårsaket av økende utslipp av menneskeskapt karbondioksid, det er derfor avgjørende å finne strategier for å redusere disse utslippene. Calcium-looping (Ca-L) har dukket ... -
Production of fuel-cell grade H2 by sorption enhanced steam reforming of acetic acid as a model compound of biomass-derived bio-oil
(Journal article; Peer reviewed, 2016)Fuel-cell grade H2 has been produced by the sorption enhanced steam reforming (SESR) of acetic acid, a model compound of the bio-oil obtained from the fast pyrolysis of biomass. A Pd/Ni–Co catalyst derived from a ... -
Production of high pressure pure H2 by pressure swing sorption enhanced steam reforming (PS-SESR) of byproducts in biorefinery
(Peer reviewed; Journal article, 2018)Hydrogen is highly demanded in biorefinery, and hydrogen production from renewable sources is essential to produce truly green transportation fuels from biomass. The present work demonstrates experimentally the production ... -
Production of Methanol from Intermittent Off-grid Renewable Energy: Energy Storage Technologies
(Master thesis, 2023)Å stoppe økende utslipp som forårsaker klimaendringer er tidskritsk. Dette fører derfor til behovet for lavkarbon- og fornybare alternativer. Denne master oppgaven fokuserer på utnyttelse av fornybar energi, spesifikt ... -
Production Optimization of Contrast Agent Substance: Modeling, Dynamic Optimization and Control
(Master thesis, 2009) -
Promoted Strong Bicarbonate Forming Solvents for CO2 Capture
(Journal article; Peer reviewed, 2017)Effect of different promoters on performance of two bicarbonate forming solvents (HS1 and HS2) was studied in this work and results compared with the performance of 30 wt% MEA and CESAR1 solvents. Based on the results from ... -
Promotional effect of in-situ generated hydroxyl on olefin selectivity of Co-catalyzed Fischer-Tropsch synthesis
(Peer reviewed; Journal article, 2019)The understanding of the water effect on olefin selectivity in Fischer–Tropsch synthesis (FTS) is limited by the complexity of the reaction network. Herein, we employ propene hydrogenation as a model reaction to isolate ... -
Propene epoxidation with H2 and O2 on Au/TS-1 catalyst: Cost-effective synthesis of small-sized mesoporous TS-1 and its unique performance
(Journal article; Peer reviewed, 2018)Designing cost-effective titanium silicalite-1 (TS-1) with enhanced mass transfer ability is of prime scientific and industrial importance. In this work, a novel small-sized mesoporous TS-1 (STS-1) material is first ... -
Proper orthogonal decomposition modal analysis in a baffled stirred tank: a base tool for the study of structures
(Peer reviewed; Journal article, 2023)Proper orthogonal decomposition (POD) is applied to three-dimensional (3-D) velocity fields collected from large-eddy simulations (LES) of a baffled stirred tank. In the LES, the tank operates with a Rushton-type impeller ...