Tea Stem as a Sorbent for Removal of Methylene Blue from Aqueous Phase

Table 3

Thermodynamic parameters for MB adsorption onto tea stem powder (C = 300 mg/L; RM = 4.00 g/L; pH = 5.00).

Temperature (K)	ΔG^0 (kJ/mol)	ΔH^0 (kJ/mol)	ΔS^0 (J/mol/k)
298	−6.49	−5.18	4.60
313	−6.75
328	−6.62