Browsing NTNU Open by Author "Tranell, Maria Gabriella"

Aluminium Recycling Pre-treatments: Compaction and Thermal De-coating

Olivares, Alicia Vallejo (Doctoral theses at NTNU;2024:103, Doctoral thesis, 2024)

Due to their light weight and versatility, aluminium alloys are found everywhere around us, from food packaging to aerospace applications. Aluminium recycling saves substantial amounts of energy, resources, and waste ...

Analysis of nitro- and oxy-PAH emissions from a pilot scale silicon process with flue gas recirculation

Arnesen, Kamilla; Andersen, Vegar; Jakovljevic, Katarina; Enge, Ellen Katrin; Gaertner, Heiko; Aarhaug, Thor Anders; Einarsrud, Kristian Etienne; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2023)

Analysis of Polycyclic Aromatic Hydrocarbon Emissions from a Pilot Scale Silicon Process with Flue Gas Recirculation

Arnesen, Kamilla; Vachaparambil, Kurian Jomy; Vegar, Andersen; Panjwani, Balram; Jakovljevic, Katarina; Enge, Ellen Katrin; Gaertner, Heiko; Aarhaug, Thor Anders; Einarsrud, Kristian Etienne; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2023)

Flue gas recirculation (FGR) is a method used in several industries to control emissions and process conditions, such as NOx reduction and temperature levels, and increase the CO2 concentration in the off-gas, to be better ...

Atomic Layer Deposition of Titanium Oxide-Based Films for Semiconductor Applications—Effects of Precursor and Operating Conditions

Matkivskyi, Vladyslav; Leiviska, Oskari; Wenner, Sigurd; Liu, Hanchen; Vahanissi, Ville; Savin, Hele; Sabatino, Marisa Di; Tranell, Maria Gabriella (Journal article, 2023)

Two widely used atomic layer deposition precursors, Tetrakis (dimethylamido) titanium (TDMA-Ti) and titanium tetrachloride (TiCl4), were investigated for use in the deposition of TiOx-based thin films as a passivating ...

Characterization of industrial hydrocarbon samples from anode baking furnace off-gas treatment facility

Arnesen, Kamilla; Albinet, Alexandre; Chatellier, Claudine; Huynh, Nina; Aarhaug, Thor Anders; Einarsrud, Kristian Etienne; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2023)

Polycyclic aromatic hydrocarbons (PAHs) are naturally present in raw materials used as a binder in prebaked anodes for electrolysis of aluminum. Green anodes are baked to about 1200 °C through a cycle of 14–17 days where ...

Effect of (5%) CO2 on the Oxidation Rate During Cooling of Industrial Aluminum White Dross

Solem, Cathrine Kyung Won; Deledda, Stefano; Zedel, Hannes; Tranell, Maria Gabriella; Aune, Ragnhild Elizabeth (Peer reviewed; Journal article, 2023)

Aluminum (Al) white dross is classified as hazardous waste and originates from the primary production of Al as a result of molten metal oxidation at an industrial scale. As the produced dross reduces the annual metallic ...

Effects of Compaction and Thermal Pre‑treatments on Generation of Dross and Off‑Gases in Aluminium Recycling

Vallejo Olivares, Alicia; Gertjegerdes, Tom; Høgåsen, Solveig; Friedrich, Bernd; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2023)

Organic coatings are a challenge for aluminium packaging recycling since they tend to increase the re-melting metal losses. A solution is de-coating the scrap via a thermal pre-treatment to burn-off the organics before ...

Heavy Metal Emissions through Particulate Matter from Aluminium Electrolysis

Tranell, Maria Gabriella; Aarhaug, Thor Anders; Müller, Fride (Peer reviewed; Journal article, 2023)

Heavy metal emissions from the aluminium industry are mainly carried from the plant through fugitive particulate matter (PM) originating from the aluminium electrolysis pot room. To evaluate the behaviour of metal-carrying ...

High-Temperature Reactive Wetting of Natural Quartz by Liquid Magnesium

Rasouli, Azam; Kudyba, Artur; Bruzda, Grzegorz; Safarian, Jafar; Tranell, Maria Gabriella (Journal article; Peer reviewed, 2024)

High-temperature wetting of natural, high-purity quartz (SiO2) and liquid magnesium (Mg) was investigated at temperatures between 973 and 1273 K. Sessile drop experiments using the capillary purification (CP) procedure ...

Influence of Atmosphere and Temperature on Polycyclic Aromatic Hydrocarbon Emissions from Green Anode Paste Baking

Arnesen, Kamilla; Aarhaug, Thor Anders; Einarsrud, Kristian Etienne; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2023)

Coal tar pitch, a well-known source of polycyclic aromatic hydrocarbons (PAHs), is used as a binder of petroleum coke in prebaked anodes used for electrolysis of aluminum. Anodes are baked up to 1100 °C over a 20-day period, ...

Influence of Cryolite Content on the Thermal Properties and Coalescence Efficiency of NaCl-KCl salt flux

Milani, Veronica; Vallejo Olivares, Alicia; Tranell, Maria Gabriella; Timelli, Giulio (Peer reviewed; Journal article, 2023)

Salt fluxes with fluoride additions are necessary for the treatment and recycling of contaminated or oxidized aluminium scrap. This study aims to investigate the effect of cryolite additions on the thermal properties and ...

Innovative Utilization of Aluminum-Based Secondary Materials for Production of Metallurgical Silicon and Alumina-Rich Slag

Philipson, Harald; Solbakk, Gjermund L.; Wallin, Maria; Einarsrud, Kristian Etienne; Tranell, Maria Gabriella (Journal article; Peer reviewed, 2022)

LCA of recycling aluminium incineration bottom ash, dross and shavings in a rotary furnace and environmental benefits of salt-slag valorisation

Vallejo Olivares, Alicia; Vallés, Elisa Pastor; Pettersen, Johan Berg; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2024)

Recycling aluminium in a rotary furnace with salt-fluxes allows recovering valuable alloys from hard-to-recycle waste/side-streams such as packaging, dross and incinerator bottom ash. However, this recycling route generates ...