Adsorptive Removal of Hexavalent Chromium by Diphenylcarbazide-Grafted Macadamia Nutshell Powder

Figure 9

Effect of initial solution concentration for the removal of Cr(VI) by MHP and MHPD adsorbents (conditions: contact time 180 min; dosage 2.5 g/L; and pH 2).

(a)

(b)