Author (Purnima, Navleen Kaur Chopra, Dr. Jitender Kumar, Sumit Sharma and Sonia Sharma)
Synthetic dyes are used in several industries including textile dyeing printing and cosmetic industries. Due to thier complex structure they are resistant to be decomposed by conventional treatment technologies. Hence microbial decolorization of dyes could be a viable option as low cost ecofriendly waste water treatment system from these industries. This study presents microbial decolorization of textile dye effluents from five microbial isolates isolated from five different effluent samples collected from fabric industry. Different parameters such as carbon source, temperature, pH and inoculum size were optimized for decolorization of Methylene Blue, Crystal Violet, EosinYellow, Safranine dyes by using bacterial isolates. Among carbon sources glucose was found to be the best decolorizer, 27°C-30°C of temperature was observed to be optimum for decolorization, the optimum pH range for decolorization was found to be from pH6-pH8 whereas 6% (v/v) of inoculum showed best decolorization results. All the samples were incubated at 30°C 100 rpm. The decolorization was measured as decrease in absorbance maxima at 663 nm,590 nm,518nm, 530 nm for mehtylene blue, crystal violet, eosin yellow, safranine respectively.
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