Textile dye industry is spitting out tons of dye effluent into the environment everyday thus becoming a cause of grave concern to the environmentalists. The present study was undertaken keeping this problem in view. Removal of dye Acid Violet, a much used dye in the textile industry, by its adsorption on two different samples of activated carbon by static batch method was studied. Optical density of blank dye solutions in different concentrations ranging from 10 to 100mg/L and optical density of solutions after adsorption on activated carbon samples were taken and analyzed. Calibration curves were plotted and the amount of dye qe adsorbed was calculated. The data was fitted to Polynomial, Langmuir and Freundlich isotherms for two different carbon samples and different concentration and pH values. Constants were calculated from the slope and intercept values of the isotherms. Coefficient of correlation R2 and Standard Deviation SD were also noted. It was found that the data fitted well to the isotherms. The Carbon samples showed good potential to adsorb the dye. Adsorption was higher at lower concentrations of the solution. It was also higher in acidic pH as compared to in alkaline pH. From the analysis of the data it can be concluded that activated carbon has a good capacity to remove waste textile dye from industrial effluent and can be used as one of the methods to clean wastewater.
Keywords: Adsorption; Acid Violet; Activated Carbon; Textile Industry Effluent.
About the Author
The author is associated with University Institute of Fashion Technology, Panjab University, Chandigarh, India.