MICROBIAL DECOLORIZATION OF TEXTILE DYE EFFLUENT
2014
Purnima | Navleen Kaur Chopra | Dr. Jitender Kumar | Sumit Sharma and Sonia Sharma
Synthetic dyes are used in several industries including textile dyeing printing and cosmeticindustries. Due to thier complex structure they are resistant to be decomposed by conventionaltreatment technologies. Hence microbial decolorization of dyes could be a viable option as low costecofriendly waste water treatment system from these industries. This study presents microbialdecolorization of textile dye effluents from five microbial isolates isolated from five different effluentsamples collected from fabric industry. Different parameters such as carbon source, temperature, pHand 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 bestdecolorizer, 27°C-30°C of temperature was observed to be optimum for decolorization, the optimumpH range for decolorization was found to be from pH6-pH8 whereas 6% (v/v) of inoculum showedbest decolorization results. All the samples were incubated at 30°C 100 rpm. The decolorization wasmeasured 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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