Biochar Filter for Sustainable PFAS Remediation

Purpose and goal

The project aims to continue testing, developing and validate a circular biochar-based filter solution for treating PFAS-contaminated water at airports affected by historical firefighting activities. The goal is to produce a filter prototype and assess regeneration and reuse of the biochar to preserve the carbon sink and enable cascading use, such as potential final application as a soil improver.

Expected effects and result

The project is expected to identify which biochar properties best support PFAS adsorption under realistic conditions, develop an airport-adapted filter prototype and generate knowledge on regeneration and safe destruction of PFAS. The results may enable large-scale testing and future adoption of circular filter solutions, improving conditions for cost-efficient and sustainable PFAS treatment.

Planned approach and implementation

The project is carried out through laboratory testing, development of a filter prototype, regeneration trials and analysis of reuse potential. It includes mapping customer requirements, regulations, climate and business analysis and scientific publishing. The work is conducted together with researchers and industry partners to enable future demonstration in operational environments. The project will share results with relevant stakeholders and welcomes dialogue with interested organizations.