Bioremediation of anthraquinone dye reactive blue 19 by halo-acido-alkaliphilic bacterial consortia.
Rubaida NJ, Mosharaf MK, Limon MGS, Rahman A, Islam R
Phytoremediation
Textile dye pollution can reach the water used to irrigate farms and gardens, and a cheap bacterial cleanup method could help ensure the water feeding our food crops and green spaces isn't quietly poisoning them.
Factories that make brightly colored fabrics often dump toxic dyes into water, which can end up in rivers, soil, and eventually the plants we eat. Scientists tested four different teams of naturally occurring bacteria and found they could almost completely break down one of the nastiest of these dyes. Best of all, what the bacteria left behind was tested on plants and found to be harmless — meaning the cleanup actually works all the way through.
Key Findings
The best-performing bacterial consortium (C4) achieved 99.7% decolorization of the toxic dye Reactive Blue 19 under optimal conditions within 72 hours.
The bacterial consortia reduced chemical oxygen demand by 82.9–89.4% and total organic carbon by 66.4–71.6%, indicating substantial breakdown of the dye's molecular structure.
Breakdown products from all four consortia did not inhibit plant or microbial growth, confirming genuine detoxification rather than just color removal.
chevron_right Technical Summary
Researchers found that specially selected groups of bacteria can break down a toxic textile dye — Reactive Blue 19 — by up to 99.7%, turning it into compounds that are safe for plants and microbes. This offers a promising low-cost, natural approach to cleaning dye-contaminated wastewater before it reaches soils and waterways.
Abstract Preview
Water pollution caused by dyes is a global problem. This study examines the effect of four recently created bacterial consortia on bioremediation of Reactive Blue 19 (RB 19, a recalcitrant, mutagen...
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