Bioremoval of Basic Violet 3 and Acid Blue 93 by Pseudomonas putida and its adsorption isotherms and kinetics

Basic Violet 3 and Acid Blue 93 are the most important group of synthetic colourants extensively used in textile industries for dyeing cotton, wool, silk and nylon. Release of these dye pollutants in to the environment adversely affects the human health and aquatic organisms. The present study we used Pseudomonas putida MTCC 4910 for the adsorptive removal of Basic Violet 3 and Acid Blue 93 from the aqueous solutions. The pH (4–9) and NaCl concentrations (1 mM–1 M) did not influence the adsorption process. The equilibrium adsorption process fitted well to Freundlich model than Langmuir model. The kinetics of adsorption fitted well by pseudo-second-order. Thus in the present study an attempt has been made to exploit the dye removal capability of P. putida MTCC 4910, and it was found to be an efficient microbe that could be used for bio removal of dyes from textile effluents.

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► Pseudomonas putida MTCC 4910 can efficiently remove Basic Violet 3 and Acid Blue 93.
► Adsorption process did not affect by pH and NaCl concentrations of the interaction medium.
► The adsorption process was maximum at 37 °C.
► Adsorption equilibrium isotherms fitted well by the Freundlich model.
► Kinetics of adsorption fitted by pseudo-second-order.