Adsorption of Dye by Waste Black Tea Powder: Parameters, Kinetic, Equilibrium, and Thermodynamic Studies

Figure 1

(a) Pore size distribution and (b) N₂ adsorption/desorption isotherms. (c) XRD pattern of waste black tea powder and (d) FTIR spectrum of black tea before and after adsorption of MB in this study.

(a)

(b)

(c)

(d)