Research Article

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

Figure 2

Point zero charge (pHpzc) values for the biosorption of mercury ions on natural P. karka and treated P. karka (concentration = 10 mg/L, time = 30 minutes,  K, agitation speed = 150 rpm, dose of biosorbent = 2 g/100 mL, and pH = 2–8).