Thomas Hartnik
Director
Biography
Education:
Doctoral degree (Dr.scient) in ecotoxicology from the Norwegian University of the Environment and Biosciences in 2008
Areas of expertise:
- management experience
- varied professional background from academia, state administration and private business within circular economy and pollution and climate-related issues.
- Project manager for larger R&D and consulting projects.
- Experience from boards of the Research Council of Norway and professional networks
Authors
Karen Ane Frøyland Skjennum Thomas Hartnik Gijs D. Breedveld Erlend Grenager Sørmo Jan MulderAbstract
Per- and polyfluoroalkyl substances (PFAS) pose significant environmental and human hazards due to their resistance towards natural degradation. Anthropogenic activities have resulted in worldwide spreading of PFAS, and soil remediation of PFAS is challenging due to its persistent and mobile nature. Amendment with commercial activated carbon (AC) of fossil origin is one of the preferred immobilization strategies for contaminated soil. However, waste-based sorbents may represent a greener alternative to AC. Here, we review the status and potential for the use of waste-based materials as PFAS sorbents in soil remediation. Key properties in the search of candidate materials are discussed, followed by an overview of potential sorbents. The materials reviewed are bark, protein-rich waste, chitosan, amine-modified waste, compost, biosolids, biochar produced from waste-based substrates, and a selection of industrial waste, notably bottom- and fly ash, char and slag. Performance and sorption behavior of these materials are compared for long- and short-chain PFAS, and their applicability is further discussed. Besides great sorption capacity and affinity, promising amendments combine high abundance, low cost, a potential for modification and low risk. Biochar emerges as the most mature and promising candidate of the materials reviewed. Other waste-based materials also show great PFAS sorption capacities, but their performances in soil have not been properly assessed. Besides sorption studies in environmentally relevant matrices, upscaling and long-term studies are needed to further examine the potential use of waste-based sorbents in remediation of PFAS contaminated soil.
Abstract
No abstract has been registered
Authors
Brita Bye Marit Aursand Thomas Hartnik Henrik E. Kolderup Ola Kvaløy Jarle Møen Kristine NoreAbstract
Regjeringen oppnevnte i mars 2024 en ekspertgruppe for å se på virkemidler for å fremme sirkulære aktiviteter. Et slikt arbeid var anbefalt og nevnt i flere prosesser i forkant. Langsiktig og bærekraftig forvaltning av ressurser er et grunnprinsipp i regjeringens politikk. Vi må gå fra en lineærøkonomi med bruk-og-kast til en sirkulærøkonomi basert på tanken om at minst mulig ressurser skal gå til spille og måtte håndteres som avfall. Gruppen skal rapportere til Klima- og miljødepartementet, sammen med Nærings- og fiskeridepartementet, Landbruks- og matdepartementet og Finansdepartementet. 26. mai 2025 lanserte ekspertgruppen sin rapport om virkemidler for å fremme en mer sirkulær økonomi. Rapporten peker på at forbruket vårt, både privat og i næringslivet, må dreies mot varer og tjenester med lavere klima- og miljøpåvirkning.