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

Figure 4

Effect of agitation speed on adsorption capacity of natural P. karka and treated P. karka (concentration = 10 mg/L, time = 30 minutes,  K, agitation speed = 100–300 rpm, dose of biosorbent = 2 g/100 mL, and pH = 6 and 7 for natural P. karka and treated p. karka, resp.).