Removal (%)

pH

RR-2

RB-4

2

46.44

93.07

7

48.37

95.65

10

42.08

98.50

Table 2: Effect of initial pH (C0= 100 mg/L; CA= 20 g/L; particle size: 355-500 µm; N=100 rpm; T= 25°C, time: 48 h).