Designing biochars for improved sorptive removal of per‐ and polyfluoroalkyl substances

Key Points

• The research investigates the use of lime sludge pretreatment in creating effective biochars for the removal of PFAS from water.
• Evaluated lime sludge as a precursor for biochar production.
• Assessed the performance of biochars in sorbing per- and polyfluoroalkyl substances (PFAS).
• Emphasized cost-effectiveness and sustainability in sorbent design.
• Biochars produced from lime sludge showed significantly improved PFAS uptake compared to untreated materials.
• Lime sludge-derived sorbents enhanced removal efficiency, indicating their potential in water treatment applications.