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

Figure 4

TGA and DTA thermograms for RMN (a), 20 MHPD (b), 35 MHPD (c), and 50 MHPD (d) adsorbents.

(a)

(b)

(c)

(d)