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Fabrication and Characterization of Polymeric Membranes for Dehydration of Triethylene Glycol Used for Subsea Application
(Master thesis, 2019)Hensikten med dette prosjektet er undersøke om en polybenzimidazole (PBI) membran kan brukes til å dehydrere trietylen glykol (TEG) i en pervaporasjons prosess som en del av en membran prosess for dehydrering av naturgass. ... -
Fabrication and characterization of Solid Lipid Nanoparticles and Nanostructured Lipid Carriers
(Master thesis, 2015)The effect of drugs could be greatly improved by encapsulating drugs into nanoparticles. Nanoparticles can facilitate delivery of a variety of drugs, allow transport to target site and achieve prolonged drug delivery. This ... -
Fabrication and Evaluation of Bio-based Nanocomposite TFC Hollow Fiber Membranes for Enhanced CO2 capture
(Journal article; Peer reviewed, 2019)Nanocellulose is a promising and sustainable biobased nanomaterial because of its excellent mechanical properties, biocompatibility, natural abundance, and especially its high aspect ratio. Interest in applying nanocellulose ... -
Fabrication of Defect-Free Cellulose Acetate Hollow Fibers by Optimization of Spinning Parameters
(Journal article; Peer reviewed, 2017)Spinning of cellulose acetate (CA) with the additive polyvinylpyrrolidone (PVP) in N-methyl-2-pyrrolidone (NMP) solvent under different conditions was investigated. The spinning parameters of air gap, bore fluid composition, ... -
Facile and Solvent-free Fabrication of PEG-based Membranes with Interpenetrating Networks for CO2 Separation
(Journal article; Peer reviewed, 2018)For nearly two decades, membranes derived from polyethers have served as promising candidate materials for CO2 separation. Due to the inherent tendency of high-molecular-weight poly(ethylene oxide) (PEO) to crystallize and ... -
Facile synthesis approach for core-shell TiO2–CdS nanoparticles for enhanced photocatalytic H2 generation from water
(Journal article; Peer reviewed, 2018)With the ambition to design a cost-effective and highly stable photocatalyst with improved photocatalytic activity towards H2 generation by water splitting, herein we report a two-step facile synthesis approach for core-shell ... -
Facilitated transport membranes containing graphene oxide-based nanoplatelets for CO2 separation: Effect of 2D filler properties
(Peer reviewed; Journal article, 2020)Realization of suitable membrane-based technology for efficient CO2 capture to mitigate climate change relies on the development of thin-film composite (TFC) membranes with superior separation performance. Graphene oxide ... -
Facilitated Transport Nanocomposite Membranes for CO<inf>2</inf>/H<inf>2</inf> Separation: The Effect of Mobile Carriers
(Peer reviewed; Journal article, 2023)Using CO2-selective membranes based on facilitated transport mechanisms has been reported as an energy-efficient approach for hydrogen purification from CO2-containing mixed gas streams. In this work, four CO2-philic mobile ... -
Fast Economic Model Predictive Control for a Gas Lifted Well Network
(Journal article; Peer reviewed, 2018)This paper considers the optimal operation of an oil and gas production network by formulating it as an economic nonlinear model predictive control (NMPC) problem. Solving the associated nonlinear program (NLP) can be ... -
Fast Sensitivity-Based Nonlinear Economic Model Predictive Control with Degenerate NLP
(Journal article; Peer reviewed, 2018)We present a fast sensitivity-based nonlinear model predictive control (NMPC) algorithm, that can handle non-unique multipliers in the discretized dynamic optimization problem. Non-unique multipliers may arise, for example ... -
A fast, low-cost, robust and high-throughput method for viral nucleic acid isolation based on NAxtra magnetic nanoparticles
(Peer reviewed; Journal article, 2023)The year of 2020 was profoundly marked by a global pandemic caused by a strain of coronavirus named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiological agent of coronavirus disease 2019 (COVID-19). ... -
Feasibility study and modelling of multistage amine reclaimer
(Master thesis, 2013)One of the largest expenses in CO2 capture is the transport and disposal of waste from the amine reclaimer, and top up of fresh amine~\citep{KIP}. The main reason for this is because the waste stream contains quite large ... -
Feedback Real-Time Optimization Strategy Using a Novel Steady-state Gradient Estimate and Transient Measurements
(Journal article; Peer reviewed, 2019)This paper presents a new feedback real-time optimization (RTO) strategy for steady-state optimization that directly uses transient measurements. The proposed RTO scheme is based on controlling the estimated steady-state ... -
Feedforward, Cascade and Model Predictive Control Algorithms for De-Oiling Hydrocyclones: Simulation Study
(Peer reviewed; Journal article, 2021)Abstract: Maintaining the efficiency of the produced-water treatment system is important for the oil and gas industry, especially taking into consideration the environmental impact caused of the produced-water. De-oiling ... -
FIB/SEM Characterization of Paper Materials
(Master thesis, 2016)3D microscopy is of interest for structural characterization of paper materials to study the use of cellulose nanofibrils as a paper additive. Focused ion beam (FIB) tomography is a promising microscopy technique for this ... -
Field test of a pre-pilot scale hollow fiber facilitated transport membrane for CO2 capture
(Journal article; Peer reviewed, 2019)In this work, a pre-pilot scale hollow fiber membrane module with a PVA/ProK hybrid membrane containing up to 40 wt% amino acid salt was fabricated and tested infield for CO2 capture. The petroleum coke-fired flue gas ... -
Field trial of hollow fiber modules of hybrid facilitated transport membranes for flue gas CO2 capture in cement industry
(Peer reviewed; Journal article, 2020)Alarming increase in global CO2 emissions warrants acceleration of CO2 capture technologies. In this work, testing of pre-pilot scale membrane modules containing hybrid facilitated transport membranes in hollow fiber ... -
Filtration Properties of Ferric Hydroxide Precipitate in Nickel Production
(Chapter, 2018)Ferric iron removal from the nickel electrolyte at Glencore Nikkelverk AS in Kristiansand, Norway, is achieved by precipitation of iron hydroxide followed by filtration, and it is desirable to improve filtration properties ... -
Finding Self-optimizing Control Variables Using Process Data
(Master thesis, 2014)In this project we have studied a newly developed way to find self-optimizing variables. The method studied in this thesis uses data measurements, y, to fit a quadratic cost function. By using parameters found in the cost ... -
Fine-Tuning of Particle Size and Morphology of Silica Coated Iron Oxide Nanoparticles
(Journal article; Peer reviewed, 2023)