Institutt for kjemisk prosessteknologi
Recent Submissions
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Techno-economic assessment of the multi-absorber approach at an industrial site with multiple CO2 sources
(Journal article; Peer reviewed, 2025)To meet the goals of the Paris Agreement, decarbonization across all sectors, including industrial facilities with multiple CO2 emission sources, is essential. Post-combustion capture, despite its high energy demands, is ... -
From Biomass to Refinery-Ready Bio-Crude: Biomass Pyrolysis with Vapor Phase Upgrading
(Doctoral theses at NTNU;2025:138, Doctoral thesis, 2025)Biomass pyrolysis presents a promising alternative to fossil fuels for aviation fuel production. However, a major challenge lies in the high oxygen content of the resulting bio-oil and the significant carbon loss to the ... -
Catalytic oxidation upcycling of polyethylene terephthalate to commodity carboxylic acids
(Journal article; Peer reviewed, 2024)Catalytic upcycling of polyethylene terephthalate (PET) into high-value oxygenated products is a fascinating process, yet it remains challenging. Here, we present a one-step tandem strategy to realize the thermal catalytic ... -
Directing the reaction pathway in the one-pot conversion of cellulose to vicinal diols by controlling bimetallic active sites in Ni-Cu/4ZnO-CNT catalysts
(Journal article; Peer reviewed, 2024)Catalytic conversion of cellulose to diols is an attractive approach in the valorization of biomass, because of the high atom efficiency of the reaction process. The work here highlights the potential of cellulose as a ... -
Techno-economic assessment of carbon capture with hybrid technologies for biogas upgrading to biomethane and food-grade CO2 production
(Master thesis, 2024)Som klimaendringer og global oppvarming fremstår som kritiske utfordringer, får energirelaterte løsninger økt betydning som effektive tiltak for å redusere disse. Blant disse spiller karbonfangst en avgjørende rolle i å ... -
Reaction modelling of hydrogen evolution on nickel phosphide catalysts: density functional investigation
(Peer reviewed; Journal article, 2024) -
Machine learning multi-step-ahead modelling with uncertainty assessment
(Journal article, 2024)This study presents a strategy for multi-step-ahead Identification of robust machine learning (ML). Hence, we focus on the disparity between standard single-step prediction models and the requirement for multi-step ... -
Iron Solubility Measurements in Aqueous MEA for CO2 Capture
(Journal article; Peer reviewed, 2025)Solvent degradation is one of the major challenges for amine-based carbon capture development. Oxidative degradation appears to be influenced by the combined presence of oxygen and dissolved metals, particularly iron. The ... -
Experimental VLE data for the AMP/PZ/H2O system under relevant water wash conditions for carbon capture applications
(Journal article; Peer reviewed, 2025)New vapour liquid equilibrium (VLE) ebulliometric data for 2-Amino-2-methyl-1-propanol (AMP) and Piperazine (PZ) aqueous solutions are presented in this work for a range of temperatures, 30°C, 40°C and 50°C, and AMP:PZ ... -
Demonstrating the effect of solvent aging on the volatile and aerosol-based emissions of the AMP/PZ-based solvent CESAR1 after 1,000 h and 30,000 h operation
(Peer reviewed; Journal article, 2025) -
Addressing Knowledge Gaps in Amine-Based Carbon Capture: A Focus on Degradation, Emissions, and Iron Solubility
(Doctoral theses at NTNU;2024:455, Doctoral thesis, 2024)Carbon capture and storage is a promising option for reducing CO2 emissions. Many technologies exist, with amine-based carbon capture being the most mature. However, it still faces barriers, and continuous improvements are ... -
Assessment of the volatility of amine degradation compounds in aqueous MEA and blend of 1-(2HE)PRLD and 3A1P
(Journal article; Peer reviewed, 2024)Amine-based carbon capture has proven to be a mature technology, but challenges remain. Emission control of potentially hazardous compounds is critical to ensure the long-term viability of the technology. The ability to ... -
What can go wrong in a dividing wall column and how to detect it
(Journal article; Peer reviewed, 2025)Dividing wall columns are state of the art distillation arrangements performing three separation tasks within one unit. Compared to using two conventional columns in series this saves both capital costs and energy but on ... -
Supported Cu catalysts for selective carbonyl hydrogenation - hydroxyacetone to 1,2-propanediol
(Doctoral theses at NTNU;2024:502, Doctoral thesis, 2024)The global energy crisis and environmental challenges have driven significant research into biomass-based industrial processes. Developing biomass-derived platform chemicals, fundamental to the chemical industry, is a key ... -
Biomass to liquids via Fischer-Tropsch synthesis. Electronic effects on cobalt-based catalysts
(Doctoral theses at NTNU;2024:492, Doctoral thesis, 2024)The transition from fossil fuels to alternative energy sources is one of the main challenges of the XXI century. Several strategies are being studied for decarbonizing difficult sectors as aviation, maritime transport and ... -
Rubbery organic frameworks (ROFs) toward ultrapermeable CO2-selective membranes
(Journal article; Peer reviewed, 2024)The capture of CO2 is of high interest in our society representing an essential tool to mitigate man-made climate warming. Membrane technology applied for CO2 capture offers several advantages in terms of energy savings, ... -
Adsorption Study of Chitosan Granulated Lithium Manganese Oxide (CTS/HMO) in Batch and Column Setup
(Master thesis, 2024)I rapporten ble adsorpsjonsegenskapene til CTS/LMO testet. CTS/LMO ble sammenlignet med LMO-pulver for å undersøke effekten av granulering fra LMO til CTS/HMO. Granuleringsprosessen ble studert, og desorpsjonen av CTS/LMO ... -
Bimetallic CuFe/TiO2 catalysts for catalytic upgrading of biomass pyrolysis vapors
(Master thesis, 2024)Tidligere biomasse pyrolyse-forsøk ga et høyt innhold av eddiksyre i prøvene. Tingelstad et al. fant rundt 10 % eddiksyre i sine prøver. Eddiksyre er et vannløselig molekyl, og mye karbon går derfor tapt i vannfasen. Denne ... -
Optimization and Modeling of Lithium Recovery as Lithium Carbonate from Oxalic Acid Leachate of Black Mass
(Master thesis, 2024)Lithium er et svært ettertraktet element med anvendelser i ulike industrier, inkludert batterier og mange andre. Batterier st˚ar for den største andelen av det totale litiummarkedet. Den n˚aværende globale etterspørselen ... -
Thermodynamics of Salts in Aqueous Fluids at Low Concentrations
(Doctoral theses at NTNU;2024:451, Doctoral thesis, 2024)In geothermal power plants, high-temperature aqueous fluids are extracted from boreholes in the Earth's crust and then expanded and cooled to drive turbines for electricity production. A particularly promising geothermal ...
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