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Mäter i skogen.

Subsurface activated carbon barriers can reduce the spread of PFAS in groundwater

Researchers at the Swedish Geotechnical Institute have evaluated whether an activated carbon barrier can reduce the spread of PFAS at a heavily contaminated site. The results show that it can. After two years, PFAS concentrations had fallen by more than 99.9%. The technology could become an important tool for protecting drinking water and nature from persistent PFAS chemicals. The findings have been published as a peer-reviewed scientific article in the Remediation Journal.

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Messuring in the woods

Pilot-scale trials show: PFAS can be stopped before reaching groundwater

The spread of PFAS from contaminated soil to groundwater can be reduced by more than 99 per cent. This is shown by pilot-scale trials conducted by the Swedish Geotechnical Institute (SGI) in heavily PFAS-contaminated soil and groundwater at fire training areas near airports. In one of the tri-als, PFAS-contaminated water passed through an activated carbon barrier. PFAS levels were reduced by 99.99 per cent, to levels comparable with the current limit value for PFAS in drinking water.

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Slagg

By-products can help treat metal-contaminated water

By-products from the metal and wood processing industry may find a new application in the treatment of polluted water. A research project funded by the Swedish Geotechnical Institute (SGI) demonstrates that materials such as bark and slag can sorb several environmentally hazardous metals and thereby reduce their dispersion from contaminated sites.

Research and development