Characterization and soil remediation performance of a natural polycyclic aromatic hydrocarbon-degrading bacterial consortium (PD1).

A natural PAH-degrading consortium (PD1) enriched from coal gangue backfill soil removes 74.7% phenanthrene in 3 days and 89.5% in 9 days.

• Why it matters: PAHs persist in soils and threaten environmental and human health, yet effective bioremediation depends on robust degraders that work under realistic soil conditions.
• What they did: PD1 was enriched using phenanthrene as the sole carbon source, then assessed for phenanthrene removal in soil and for degradation of fluoranthene, pyrene, and benzo[a]anthracene.
• The result: Metagenomic and metatranscriptomic data supported a major PHE degradation route with two tentative early intermediates, while PD1 tolerated As(III) up to 50 mg/L and maintained activity during storage at 4°C.

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