Polycyclic aromatic hydrocarbons degradation by free-air CO2 enriched (FACE) bacteria into low molecular easy to degrade organic compounds

Among the 16 prioritized polycyclic aromatic hydrocarbons (PAHs), naphthalene, phenanthrene, fluoranthene, and pyrene have been used for bacterial degradation study. From the free-air CO2 enriched (FACE) soil, five Bacillus strains were isolated and used to utilize the four model toxicants at different concentrations as the sole carbon source. Bacillus amyloliquefaciens has great resistance to different PAHs and better degradation capability. B. amyloliquefaciens can degrade naphthalene (0.5 mg mL− 1), fluoranthene (0.1 mg mL− 1), and pyrene (0.1 mg mL− 1) up to 94