Blar i NTNU Open på forfatter "Varela, Gabriela Castro"
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Analysis, occurrence and removal efficiencies of organophosphate flame retardants (OPFRs) in sludge undergoing anaerobic digestion followed by diverse thermal treatments
Varela, Gabriela Castro; Sørmo, Erlend; Yu, Guanhua; Sait, Shannen Thora Lea; Villa Gonzalez, Susana; Arp, Hans Peter Heinrich; Asimakopoulos, Alexandros (Peer reviewed; Journal article, 2023)Organophosphate flame retardants (OPFRs) are a complex group of contaminants to deal with in sewage sludge, as currently there is a lack of robust analytical methods to measure them and management strategies to remove them. ... -
The decomposition and emission factors of a wide range of PFAS in diverse, contaminated organic waste fractions undergoing dry pyrolysis
Sørmo, Erlend; Varela, Gabriela Castro; Hubert, Michel; Licul-Kucera, Viktória; Quintanilla, Marjorie; Asimakopoulos, Alexandros; Cornelissen, Gerard; Arp, Hans Peter Heinrich (Peer reviewed; Journal article, 2023)Current treatment options for organic waste contaminated with per- and polyfluoroalkyl substances (PFAS) are generally limited to incineration, composting or landfilling, all resulting in emissions. Dry pyrolysis is a ... -
Eco-toxicological and climate change effects of sludge thermal treatments: Pathways towards zero pollution and negative emissions
Morales Arancibia, Marjorie Alejandra; Arp, Hans Peter Heinrich; Varela, Gabriela Castro; Asimakopoulos, Alexandros; Sørmo, Erlend; Peters, Gregory; Cherubini, Francesco (Peer reviewed; Journal article, 2024)The high moisture content and the potential presence of hazardous organic compounds (HOCs) and metals (HMs) in sewage sludge (SS) pose technical and regulatory challenges for its circular economy valorisation. Thermal ... -
Elements in Norwegian sewage sludge
Hansen, Ragnhild Minde (Master thesis, 2022)Slam fra renseannlegg kan brukes som gjødsel. Dette vil være fordelaktig med tanke på sirkulær økonomi. En utfordring for bruk av slam er at det inneholder toksiske elementer som kan frigis i miljøet ved bruk av gjødsel ... -
Exposure assessment of plastics, phthalate plasticizers and their transformation products in diverse bio-based fertilizers
Estoppey, Nicolas; Varela, Gabriela Castro; Slinde, Gøril Aasen; Hansen, Caroline Berge; Løseth, Mari Engvig; Krahn, Katinka Muri; Demmer, Viona; Svenni, Jørgen; Tran, Teresa-Van-Anh Thi; Asimakopoulos, Alexandros; Arp, Hans Peter Heinrich; Cornelissen, Gerard (Peer reviewed; Journal article, 2024)Bio-based fertilizers (BBFs) produced from organic waste have the potential to reduce societal dependence on limited and energy-intensive mineral fertilizers. BBFs, thereby, contribute to a circular economy for fertilizers. ... -
Occurence of bisphenols and benzophenone UV-filters in plastic waste: A circular economy perspective
Stavland, Vanja Thorbjørnsen (Master thesis, 2021)Abstract will be available on 2024-07-01 -
Occurrence and sorption behaviour of bisphenols and benzophenone UV-filters in e-waste plastic and vehicle fluff
Runde, Kristin; Varela, Gabriela Castro; Vike-Jonas, Kristine; Villa Gonzalez, Susana; Asimakopoulos, Alexandros; Arp, Hans Peter (Journal article; Peer reviewed, 2021)Bisphenols and benzophenone UV-filters are hazardous, high production volume chemicals. There is concern that these contaminants could leach into the environment or be recycled into new products during waste management. ... -
Occurrence of brominated and organophosphate flame retardants in Norwegian wastewater
Møretrø, Jon Aaby (Master thesis, 2021)Abstract will be available on 2024-07-01 -
Occurrence of legacy and novel Per- and Polyfluoroalkyl Substances (PFAS) in plastics, e-waste plastics and mobile phone waste
Svendsen, Martine (Master thesis, 2021)Abstract will be available on 2024-07-01 -
Occurrence of novel and legacy Per- and polyfluoroalkyl substances (PFAS) in selected aqueous and environmental matrices.
Andersen, Vetle Hebnes (Master thesis, 2021)Abstract will be available on 2024-07-01 -
Per- and poly-fluoroalkyl substances in Tawny Owl (Strix aluco) feathers from Trøndelag, Norway
Zhang, Junjie; Jaspers, Veerle Leontina B; Røe, Jonas; Varela, Gabriela Castro; Kroglund, Ingvild Buran; Villa Gonzalez, Susana; Østnes, Jan Eivind; Asimakopoulos, Alexandros (Journal article; Peer reviewed, 2023)Per- and polyfluoroalkyl substances (PFASs) are contaminants of global concern due to their ubiquitous occurrence in the environment, bioaccumulation and the adverse effects on organisms. Tawny Owls (Strix aluco) are ... -
Recycling of paper, cardboard and its PFAS in Norway
Langberg, Håkon Austad; Arp, Hans Peter Heinrich; Varela, Gabriela Castro; Asimakopoulos, Alexandros; Knutsen, Heidi (Peer reviewed; Journal article, 2023)Per- and polyfluoroalkyl substances (PFAS) have been used in paper products since the 1960s. PFAS emissions during the life cycle of these products have been substantial sources of these substances to the environment. Here, ... -
The occurrence and mass loadings of bisphenols, benzophenones and brominated flame retardants in Norwegian sewage sludge
Frengen, Eira Berstad (Master thesis, 2021)Abstract will be available on 2024-07-01 -
The Presence of Per- and Polyfluorinated Alkyl Substances (PFAS) through Different Wastewater and Sludge Treatment Facilities in Norway
Grandum, Aslak Dypbukt (Master thesis, 2021)Abstract will be available on 2024-07-01