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

Figure 5

Effect of biosorbent dose on adsorption capacity of natural P. karka and treated P. karka (concentration = 10 mg/L, time = 30 minutes,  K, agitation speed = 150 and 100 rpm natural P. karka and treated p. karka resp., dose of biosorbent = 1–6 g/100 mL, and pH = 6 and 7 for natural P. karka and treated p. karka, resp.).