Investigating anaerobic digestion microbiome resilience to high PFOA and PFOS mixtures during cometabolism.

ABSTRACT: Anaerobic digestion (AD) is a reducing environment with high microbial diversity and potential for biotransformation of PFAS. Yet, their fate and impact on the microbial community remains poorly understood. This study evaluated the long-term impact (100 d) of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) spiked at10 mg/L (low) and 100 mg/L (high), respectively. Although resilient to complete system failure, high PFAS concentrations disrupted AD, evidenced by 25-50 % reduction in methane content, 45 -48 % reduction in cumulative biogas production, and accumulation of butyric acid. No significant decrease in PFAS concentration was observed in the liquid fraction after 100 d relative to the kill controls, indicating PFAS adsorption behavior. However, PFAS concentrations w

SUBMITTER: Costa BF 

PROVIDER: S-EPMC12649820 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature