Biosorption of Congo Red Dye from Aqueous Solution Using Adsorbent Prepared from Vangueria infausta Fruit Pericarp

Figure 12

(a) Freundlich and (b) Langmuir isotherms for CR dye uptake onto treated VIFP (pH 2, 0.7 g of VIFP, initial CR concentration of 20-80 mg/L, and contact time of 180 min at 298 K).

(a)

(b)