Figure 4:
Effect of adsorbent concentration and stirring rate on adsorption of (a) RR-2 and (b) RB-4 dyes. (C
0
= 100 mg/L; particle size: 355-500 µm; initial pH∼7; T= 25
°
C, t= 48 h; adsorbent: aluminium hydroxide sludge).
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