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Korean Carbon Society (한국탄소학회)
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Adsorption of Dyes Reactive Blue 221, N Blue RGB and Acid Blue MTR on Two Different Samples of Activated Carbon

  • Kant, Rita (University Institute of Fashion Technology, Panjab University) ;
  • Rattan, V.K. (University Institute of Chemical Engineering and Technology, Panjab University)
  • Received : 2010.02.28
  • Accepted : 2010.08.05
  • Published : 2010.09.30
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Abstract

Removal of dyes Reactive Blue 221, N Blue RGB and Acid Blue MTR using two different samples of activated carbon by static batch method was studied. Experimental data on optical density of solutions at different concentrations ranging from 10 to 100 mg/L and of solutions after adsorption on activated carbon samples were measured. Calibration curves were plotted and the amount of dye $q_e$ adsorbed was calculated. The data was fitted to 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 $R_2$ and Standard Deviation SD were also noted. The data fitted well to the isotherms. Carbon sample $C_1$ showed higher potential to adsorb all the three dyes. Adsorption was higher at lower concentrations. Carbon sample $C_2$ showed better adsorption in acidic pH as compared to in alkaline pH. From the analysis of the data capacity of $C_1$ and $C_2$ to remove the dyes from water have been compared.

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