Removal of Fluoride from Aqueous Solutions Using Chitosan Cryogels

Figure 15

Sorption isotherms, cryogel QEFe fitted to Freundlich, Langmuir, and Langmuir-Freundlich models; 8 mL, 24 hours of contact, 200 rpm, 0.002 g cryogel mass, pH 6, = 323 K, closed atmosphere.