Phragmites karka as a Biosorbent for the Removal of Mercury Metal Ions from Aqueous Solution: Effect of Modification

Figure 7

(a) Pseudo-first-order rate kinetics of Hg(II) for natural P. karka and treated P. karka. (b) Pseudo-second-order rate kinetics of Hg(II) for natural P. karka and treated P. karka (concentration = 10 mg/L, time = 20–60 minutes,  K, agitation speed = 150 and 100 rpm natural P. karka and treated p. karka, resp., dose of biosorbent = 1 g/100 mL, and pH = 6 and 7 for natural P. karka and treated p. karka, resp.).

(a)

(b)