Table 3.

Impact of pH on Sorption Rate (k₂) and Sorption Capacity (q_e)

pH	k2 (g sorbent/mmol DB/min)	qe (g solute/g sorbent)
3.6	(3.51±0.18)×102	(1.31±1.0)×10−2
6.9	(2.65±0.29)×102	(1.31±2.0)×10−2
8.2	(5.49±0.38)×102	(1.28±1.0)×10−2