Maulin P Shah^1,, Kavita A Patel¹, Sunu S Nair¹, A M Darji¹

Azo dyes are released into wastewater streams without any pretreatment. To prevent contamination of our vulnerable resources, removal of these dye pollutants is importance. For this purpose, wastewater samples were collected from dye-contaminated sites of Ankleshwar, . About 48 bacterial isolates were isolated and tested for their potential to remove Remazol Black-B azo dye in liquid medium. Three bacterial isolates capable of degrading Remazol Black-B azo dye efficiently were screened through experimentation on modified mineral salt medium. Isolate ETL-1 was able to completely remove the Remazol Black-B dye from the liquid medium in 18 h. Further, the isolate showed the best performance at the dye concentration of 100 mg L-1 medium (pH 7) & at temperature 35^oC. Similarly, yeast extract proved to be the best carbon source for decolorization purpose. The results imply that the isolate ETL-1 could be used for removal of the reactive dyes from textile effluents.

azo dye, Remazol Black-B, wastewater, yeast extract