Column Studies Effect of Input Volume of Dye Solution

Adsorption of RR158 was studied at the input volume of 100, 150, 200 and 250 mL in order to investigate the effect of input volume on the adsorption behaviour. Initial dye concentration, pH and bed height were maintained constant. The experimental results of the effect of input volume are illustrated in Fig. 58 and the breakthrough curves shown in Fig. 59. An increase in dye uptake was noticed with a decrease in input dye solution. The removal was 92.63, 83.28, 82.36 and 60.00% for input volumes of 100, 150, 200 and 250 mL, respectively. The high

Breakthought Curve
Fig. 57 Breakthrough curve of RR158 dye adsorption on CAC's for various concentrations of dye solution. Experimental conditions: pH: 2, volume of solution: 150 mL, bed height: 6 cm
Fig. 58 Effect of input volume of dye solution on dye removal. Experimental condition: pH: 2, bed height: 6 cm, initial dye concentration: 60 mg/L

R2 values of the breakthrough curves of 0.806, 0.900, 0.823 and 0.958 for input volumes of 100, 150, 200 and 250 mL, respectively, bear evidence of good correlation with the experimental data.

Fig. 59 Breakthrough curves of RR158 adsorption on CAC's for various input volume of solution. Experimental conditions: pH: 2, bed height: 6 cm, initial dye concentration: 60 mg/L
Fig. 60 Linearised Thomas model of RR158 adsorption on CAC's showing effect of bed height. Experimental conditions: volume of dye solution: 250 mL, pH: 2 and concentration of dye solution: 120 mg/L
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