Browsing NTNU Open by Author "Jenssen, Ina Beate"
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Degradation kinetics of peptide-coupled alginates prepared via the periodate oxidation reductive amination route
Dalheim, Marianne Øksnes; Ulset, Ann-Sissel Teialeret; Jenssen, Ina Beate; Christensen, Bjørn E. (Journal article; Peer reviewed, 2017)Biomaterials based on peptide-coupled alginates must provide both optimal biological environments and tuneable stability/degradation profiles. The present work investigates the degradation pattern and kinetics of peptide-coupled ... -
The Effect of Reaction Conditions and Presence of Magnesium on the Crystallization of Nickel Sulfate
Jenssen, Ina Beate; Bøckman, Oluf; Andreassen, Jens-Petter; Ucar, Seniz (Peer reviewed; Journal article, 2021)Recycling of valuable metals such as nickel is instrumental to meet the need from the dramatic increase in electric vehicle battery production and to improve its sustainability. Nickel required in the battery manufacture ... -
Filtration Properties of Ferric Hydroxide Precipitate in Nickel Production
Jenssen, Ina Beate; Aufles Hines, Mona; Dotterud, Ole Morten; Bøckman, Oluf; Andreassen, Jens-Petter (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 ... -
Fluoride Adsorption On Iron Hydroxide Oxide Pricipitates During Zinc Prodcuction
Soundaranathan, Mithushan (Master thesis, 2017)In the zinc smelters at Boliden Odda, the zinc is extracted from the purified zinc sulphate solution by electrowinning. If the purified zinc sulphate contains more than 35 mg/L fluoride, the extracted zinc cannot be removed ... -
Investigations of Crystallization Conditions for Polymorph Control and Enhanced Production og an Aromatic Amine
Yndesdal, Elise (Master thesis, 2022)Ulike krystalliseringsforhold av et dimorft aromatisk amin ble undersøkt gjennom eksperimen- ter av podet batch avkjølingskrystallisering. Hensikten med arbeidet var å tilegne kunnskap om krystalliseringen og undersøke ... -
Preparation and Characterisation of Hydrophobically Modified Xanthan
Jenssen, Ina Beate (Master thesis, 2014)Xanthan is a polysaccharide widely used in food, cosmetics, and enhanced oil recovery (EOR) by polymer flooding. In polymer flooding addition of polymers increases the viscosity of the injection water used for oil extraction ... -
Purification and impurity uptake of hydrated Nickel sulfate salts from aqueous solution with common process impurities
Storøy, Fredrik Skadsem (Master thesis, 2019)Nikkelsulfat salter er en av komponentene som brukes i katoden av moderne Lithium-ion batterier i elektriske biler. Batterigrad nikkelsulfat salter er rengjort og separert via krystallisasjon. Glencore Nikkelverk AS ... -
Removal of impurities from industrial hydrometallurgical processes by crystallization
Jenssen, Ina Beate (Doctoral theses at NTNU;2021:211, Doctoral thesis, 2021)Metals play a crucial role in our daily life, and are usually produced from raw materials coming from mineral ores, typically by hydrometallurgical processing. Hydrometallurgy is described as the use of aqueous media to ... -
Study of the Particle Properties of Iron Oxide/Hydroxide Precipitate in Nickel Production
Hines, Mona Aufles (Master thesis, 2017)The background for this thesis was crystallization of iron in nickel production at Glencore and a review of filterability properties of iron oxide/hydroxide precipitate. The nickel plant in Kristiansand produces nickel and ...