Application of Sustainable and Low-Cost Sludge-Based Adsorbents …
59
Fig. 15 Adsorption capacity of CAC on Reactive Red 2 to reach equilibrium time at 120 rpm, 30°C
and pH = 7.0
Fig. 16 Adsorption capacity of SC600 on Reactive Red 31 to reach equilibrium time at 120 rpm,
30°C and pH = 7.0
removal efficiencies of SC600 and SC300 were found to be 78.83% and 80.10%
(Figs. 17 and 19), respectively. The diazo RR31 dye had higher colour removal
efficiency than the monoazo dye RR2. This can be attributed to the size of the dye
molecule and the number of SO
−3 ions present.
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Fig. 15 Adsorption capacity of CAC on Reactive Red 2 to reach equilibrium time at 120 rpm, 30°C
and pH = 7.0
Fig. 16 Adsorption capacity of SC600 on Reactive Red 31 to reach equilibrium time at 120 rpm,
30°C and pH = 7.0
removal efficiencies of SC600 and SC300 were found to be 78.83% and 80.10%
(Figs. 17 and 19), respectively. The diazo RR31 dye had higher colour removal
efficiency than the monoazo dye RR2. This can be attributed to the size of the dye
molecule and the number of SO
−3 ions present.