Removal of Fluorescein Dye from Aqueous Solutions Using Natural and Chemically Treated Pine Sawdust

Figure 9

(a) Langmuir, (b) Freundlich, and (c) Temkin isotherm plots for the FD removal by NPS and SPS (1 g adsorbent dosage; 10 mg/L concentration of FD; 50 ml solution volume; 3 h contact time; and 25°C temperature).

(a)

(b)

(c)