Biochar for treatment of contaminated soil
Project overview
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Short summary
The BALANCE project investigates the use of biochar to remediate contaminated soils. Using experimental and modeled data, BALANCE is developing methods for environmental and health risk assessment of biochar-treated soils.
Amendments with biochar can reduce the risks of contaminated soils while improving soil quality. Treatment of soils on site has great potential to reduce the amount of soil masses deposited on landfills. The overall aim of BALANCE is to enable a large-scale use of this technology by developing a framework for assessing environmental and health risks.
Environmental impact and resource use, with focus on circularity, are quantified using life cycle analysis combined with risk assessment, substance flow analysis and an urban circularity assessment. Field trials of soil treatment using biochar have been conducted over a long period (5-6 years). A new field trial is also carried out where the potential of biochar to reduce the flux of volatile pollutants is investigated. The project provides evidence for a more effective way of dealing with contaminated soils during urban development, avoiding more costly treatments or opening up new sites for dumping contaminated soils.
Facts:
The project is lead by SGI and funded by the Swedish Energy Agency through the strategic innovation programme RE:Source.
References:
Papageorgiou, A., Azzi, E. S., Enell, A., & Sundberg, C. (2021). Biochar produced from wood waste for soil remediation in Sweden: Carbon sequestration and other environmental impacts. Science of The Total Environment, 776, 145953. https://doi.org/10.1016/J.SCITOTENV.2021.145953
External webpage:
https://www.sgi.se/sv/Forskning--larande/var-forskning/renare-mark/balance/