Institutt for kjemisk prosessteknologi
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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 ... -
Sorption-enhanced Fischer-Tropsch synthesis – Effect of water removal
(Peer reviewed; Journal article, 2024)The Sorption-Enhanced Fischer-Tropsch synthesis (SEFTS), with water removal by means of a solid sorbent, has been demonstrated for the first time experimentally. Commercial water sorbents (Zeolites type 13X and 4 A) were ... -
Self-Optimizing Control of an Offshore Blue Hydrogen Plant
(Master thesis, 2023)Utviklingen av fornybare energikilder øker stadig, men ytterligere fremgang er nødvendig. Oppdagelsen av nye metoder for å produsere miljøvennlig drivstoff og energikilder er avgjørende, med hydrogen som et lovende alternativ. ... -
Advances in Optimisation and Machine Learning for Process Systems Engineering
(Doctoral theses at NTNU;2024:85, Doctoral thesis, 2024)Optimisation is a valuable tool in process systems engineering, and has been widely used in design, control, process identification and many other areas. This thesis proposes novel applications of optimisation, as well as ... -
Steam reforming of biomass gasification tar impurities with Ni-Co/Mg(Al)O catalysts: Experimental studies using model tar components
(Doctoral theses at NTNU;2024:78, Doctoral thesis, 2024)Hydrotalcite-derived Ni-Co/Mg(Al)O catalysts with a range of different Ni-Co ratios, Ni+Co loading, calcination temperatures and noble metal promotion (Pt/Pd/Rh) were prepared, targeting low-coking steam reforming of biomass ... -
The influence of asphaltenes and pour point depressants on the paraffin wax crystallization investigated by nuclear magnetic resonance and atomic force microscopy
(Doctoral theses at NTNU, 2024:67, Doctoral thesis, 2024)Wax crystallization in pipelines in cold environments is a key challenge for flow assurance during oil production. Pour point depressants have been used to delay wax crystallization and gelling, by modifying rheological ... -
Conversion of Biomass to Aviation Fuel by Hydropyrolysis and Vapors Upgrading
(Master thesis, 2023)The world is moving towards more sustainable energy generation techniques and renewable energy sources, there has been a dire need for alternatives to come into play now and enormous studies have already been done for ... -
Biomimetic Highly Porous Nanocellulose-Nanohydroxyapatite Scaffolds for Bone Tissue Engineering
(Peer reviewed; Journal article, 2024)Wood-derived TEMPO-oxidized cellulose nanofibrils (CNFs) have potential as scaffolding for bone tissue engineering. Although biocompatible, the material lacks osteoconductive and appropriate mechanical properties. Incorporation ... -
A framework for predicting odor threshold values of perfumes by scientific machine learning and transfer learning
(Journal article; Peer reviewed, 2023)Knowledge of odor thresholds is very important for the perfume industry. Due to the difficulty associated with measuring odor thresholds, empirical models capable of estimating these values can be an invaluable contribution ... -
Super selective ammonia separation through multiple-site interaction with ionic liquid-based hybrid membranes
(Peer reviewed; Journal article, 2021)Efficient separation and recovery of ammonia (NH3) is essential for environmental protection and resource utilization. In this work, hybrid membranes for NH3 separation through multiple-site interaction were developed by ... -
Hydrogen sulfide removal from natural gas using membrane technology: a review
(Peer reviewed; Journal article, 2021)Natural gas, having a significantly lower CO2 emission factor than oil and coal when combusted, is accepted as an important transition fuel towards carbon net-zero society. To meet the calorific value requirements (≥34.0 ... -
Membrane fabricated via a facile non-solvent induced microstructure re-arrangement with superior CO<inf>2</inf> separation performances
(Journal article; Peer reviewed, 2023)CO2 capture and storage (CCS) is taken as an immediate solution to mitigate the impactof increasing atmospheric CO2 on global climate change, and CO2 separation using high-performance membranes is considered a green and ... -
Impact of dissolved oxygen removal on solvent degradation for post-combustion CO2 capture
(Peer reviewed; Journal article, 2021)One of the major issues encountered in the Post Combustion CO2 Capture processes is the degradation of the solvent which can be in great part attributed to the presence of oxygen in the solution. The present report focuses ... -
High-performance carbon-capture membranes developed by (non)solvent-induced nanostructural rearrangement in Nafion
(Peer reviewed; Journal article, 2023)Membrane materials exhibiting high CO2 permeability and selectivity are needed for CO2 capture to mitigate global climate change. In this study, Nafion is dissolved in and cast from N-methylpyrrolidone to generate membranes ... -
Carbon molecular-sieve membranes developed from a Tröger's base polymer and possessing superior gas-separation performance
(Journal article; Peer reviewed, 2023)Carbon molecular-sieve membranes possess tremendous practical advantages over unary polymer membranes by providing high gas-separation performance levels, coupled with excellent mechanical and chemical stability. Improving ... -
Redox transformations of Ru catalyst during NO oxidation at industrial nitric acid production conditions
(Peer reviewed; Journal article, 2023)Oxidation of nitric oxide is one of the main steps in the Ostwald process for industrial nitric acid production. This work summarises the use of - supported Ru catalyst to study the oxidation of NO to NO at ambient and 4 ... -
Relation between Conventional and Starch-Assisted ASP Injection and Impact of Crystallinity on Flood Formation
(Journal article; Peer reviewed, 2023) -
Development of Solvent Degradation Models for Amine-Based CO2 Capture
(Doctoral theses at NTNU;2024:54, Doctoral thesis, 2024)Carbon capture and storage can be essential for achieving short-term emission reductions to reach climate goals and realizing the decarbonization of hard-to-abate sectors in the future. Aside from logistical and political ... -
Data-Driven Control Strategies: From MPC to Reinforcement Learning
(Doctoral theses at NTNU;2024:42, Doctoral thesis, 2024)This thesis presents a comprehensive investigation into the integration of machine learning techniques to enhance the performance and applicability of Model Predictive Control (MPC). The main focus is on addressing challenging ... -
Removing halide ions from sulfate solutions by anion exchange membranes in electrodialysis process: Recent advances, challenges, and prospects
(Journal article; Peer reviewed, 2024)Removing halide ions from wastewater and industrial effluents is crucial to eliminating their potential risks to human health, ecosystems, and industrial operations. However, conventional techniques for this process are ...