Browsing NTNU Open by Author "Pettersen, Johan Berg"
Now showing items 1-20 of 27
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Analyzing the sustainability of the aluminothermic reduction of silicon metal: A combined approach of MFA and spatial LCA.
Bodau, Leonhard Maxim (Master thesis, 2022)Achieving carbon neutrality by 2050 is a multi-disciplinary challenge requiring innovation and transformation in all industrial sectors. The silicon metal production is an energy and carbon intensive process emitting upwards ... -
Assessing the environmental viability of silicon production by aluminothermic reduction: A comparative life cycle analysis
Våge, Martin (Master thesis, 2023)En overgang til en renere materialproduksjon er essensielt for å begrense klimaendringene. Denne oppgaven tar for seg en ny produksjonsmetode for silisium gjennom aluminotermisk reduksjon. Tradisjonelt blir silisium produsert ... -
Bærekraftig lokal energiforsyning til et nytt hyttekonsept
Gørbitz, Julie Gade (Master thesis, 2019)Norske hytter øker stadig i størrelse og standard, og dette gjør at de forbruker stigende mengder strøm. Som en motvekt til denne utviklingen, har Nasjonalparken Næringshage gjennom Grønn fjellhageby-prosjektet som mål å ... -
Bærekraftige hytter
Thorvaldsen, Marius B. (Master thesis, 2019)I dag bygges hytter både større og tettere enn før, og de siste 20 årene har det i gjennomsnitt blitt registrert nesten 5000 nye hytter hvert år. Forenklede beregninger i introduksjonen av denne oppgaven viser at det arealet ... -
Carbon footprint and circular economy potential of furniture in a newly built neighborhood
Thongsawas, Peerapas (Master thesis, 2022)Materialstrømanalyse (MFA) og livsløpsanalyse (LCA) er brukt til å studere møbelstrømmene og karbonavtrykket som følger i et nabolag med 1,340 beboere. Nabolaget har en møbelmengde på 961,68 tonn, et tilsig på 52,13 tonn, ... -
Comparative life cycle assessment of tailings management and energy scenarios for a copper ore mine: A case study in Northern Norway
Song, Xingqiang; Pettersen, Johan Berg; Pedersen, Kristine Bondo; Røberg, Stian (Journal article; Peer reviewed, 2017)In support of continuous environmental improvement in the mining industry, it is important to systematically assess the environmental impacts of mining and mineral processing operations from a life cycle perspective. ... -
Current and Future Energy Use for Atlantic Salmon Farming in Recirculating Aquaculture Systems in Norway
Nistad, Andrea Arntzen (Master thesis, 2020)Den landbaserte produksjonsfasen er utvidet i den norske lakseoppdrettsnæringen de siste årene, hovedsakelig som en konsekvens av problemer med lus og sykdom i tradisjonell produksjon i merder. I tillegg, er ønsket om å ... -
Environmental and Nutritional Implications of Replacing Animal-Based Products with Plant-Based Alternatives
Christensen, Jonas Bak (Master thesis, 2023)Dette speciale undersøger de miljømæssige og ernæringsmæssige konsekvenser ved at erstatte animalske produkter med plantebaserede alternativer. CO2e-aftrykket for forskellige animalske produkter sammenlignes med deres ... -
Environmental impacts of treating e-waste in Norway
Lauritsen, Lærke Lindgreen (Master thesis, 2023)Elektronik affald er en meget kompleks affaldsstrøm, der består af forskellige materialer, der indeholder farlige og værdifulde materialer. Disse er vigtige at genindvinde for at undgå miljømæssige konsekvenser ved uansvarlig ... -
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 ... -
LCA of Unmanned Aerial Vehicle Delivery
Huang, Baitong (Master thesis, 2022)Widespread adoption of UAVs to replace some traditional fright modes (e.g., trucks and vehicles) could reshape the energy system and reduce carbon emissions by decreasing the total energy demand and by shifting a portion ... -
Life Cycle Assessment of Iron Extraction From Bauxite Residue
Wang, Ingvild (Master thesis, 2020)Abstract will be available on 2023-09-10 -
Life cycle assessment of phosphorous management for RAS sludge
Zaki Abdelaziz, Yasmine (Master thesis, 2018)Phosphorous (P) is an essential nutrient and its recovery from aqua- culture sludge is the main core of this study. As the global reserves of phosphate rock are likely to be depleted in the next 50-100 years, it is crucial ... -
Life Cycle Assessment of Primary Aluminium Production by Hydrogen Diffusion Anode
Ask, Ola Hunstad (Master thesis, 2023)Aluminium er et viktig metall for overgangen til netto nullutslipp, mye brukt i fornybar kraftproduksjonskonstruksjon og som konstruksjonsmateriale for bygninger. Den konvensjonelle produksjonsmetoden slipper ut 1.5 kg CO2 ... -
Life cycle assessment of recirculating aquaculture systems: A case of Atlantic salmon farming in China
Song, Xingqiang; Liu, Ying; Pettersen, Johan Berg; Brandão, Miguel; Ma, Xiaona; Røberg, Stian; Frostell, Björn (Journal article; Peer reviewed, 2019)Recirculating aquaculture systems (RAS) are an alternative technology to tackle the major environmental challenges associated with conventional cage culture systems. In order to systematically assess the environmental ... -
Life cycle assessment of rocket launches and the effects of the propellant choice on their environmental performance
Schabedoth, Paul Erik (Master thesis, 2020)Den første livssyklusvurderingen til for tiden brukte rakettdrivmidler ble utført. Fokuset for denne oppgaven er på den globale oppvarmingen og de stratosfæriske ozonutryddelseskategoriene. Drivstoffet bestående av usymmetrisk ... -
Life Cycle Assessment of silicon metal by aluminothermic reduction: an industrial symbiosis approach
Pastor Vallés, Elisa (Master thesis, 2021)Silicon is a Critical Raw Material of high economic importance that also faces a great supply risk in Europe. Conventionally, silicon is produced by reducing quartz with carbon, in a process known as carbothermic reduction ... -
Life Cycle Based Climate Emissions of Charcoal Conditioning Routes for the Use in the Ferro-Alloy Production
Surup, Gerrit Ralf; Kaffash, Hamideh; Ma, Yan; Trubetskaya, Anna; Pettersen, Johan Berg; Tangstad, Merete (Peer reviewed; Journal article, 2022)Renewable reductants are intended to significantly reduce CO2 emissions from ferro-alloy production, e.g., by up to 80% in 2050 in Norway. However, charcoals provide inferior properties compared to fossil fuel-based ... -
Life cycle impact assessment in the arctic: Challenges and research needs
Pettersen, Johan Berg; Song, Xingqiang (Journal article; Peer reviewed, 2017)Life cycle assessment (LCA) is increasingly used for environmental assessment of products and production processes to support environmental decision-making both worldwide and in the Arctic. However, there are several ... -
Livsløpsvurdering av insektproduksjon basert på norske ressurser
Liverød, Tonje (Master thesis, 2019)Den fortsatte veksten i den globale befolkningen setter et uholdbart press på verdes naturressurser, og det er ytterst nødvendig å iverksette tiltak for å sikre bærekraftig matproduksjon. Bærekraftig utvikling er avhengig ...