Untreated synthetic dye effluents severely threaten aquatic ecosystems by blocking sunlight, depleting dissolved oxygen and releasing compounds with potential ecological toxicity. Among the various treatment strategies, biological treatment is considered a cost-effective and environmentally frie...

Source: [Phys.org](https://phys.org/news/2026-07-biotoxicity-due-anaerobic-decolorization-diazo.html)

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