Bio Decolourization of Textile Dye Red ED3B by Bacterial Cultures

Water pollution is the major problem of environmental concern due to increasing industrialization. Textile industries are playing prominent role in polluting the environment by disposing its hazards chemical waste in the natural reservoirs. Among all industries the textile industries are generating a large volume of waste water. The dyes are used to a greater extent in textile industries for colouring the fabrics which are harmful, carcinogenic, mutagenic and toxic to all leaving beings. The discharge of these dyes along with waste water causes an obvious aesthetic problem. The decolorization of textile dye Red ED3B was carried out by using bacterial isolated cultures from acclimatized soil samples. The microorganisms from the soil were acclimatized by respective dye and total 5 isolates were having capacity to decolorize 94.35% of the dye in nutrient medium and about 89.51% decolorization in half strength nutrient medium within 24 hours. The effect of various carbon and nitrogen sources was also studied by using 5 isolates. The bacteria could decolorize 98.99 % and 98% of the dye in presence of carbon and nitrogen source in less than 24 hours. The percent decolorization of the dye was determined by spectrophotometer.