Potato Peels as an Adsorbent for Heavy Metals from Aqueous Solutions: Eco-Structuring of a Green Adsorbent Operating Plackett–Burman Design

Figure 12

Adsorption isotherms of Cd(II) on BPP: (a) Langmuir, (b) Freundlich, (c) Temkin, and (d) D-R isotherms.

(a)

(b)

(c)

(d)