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

Table 4

Calculated thermodynamic parameters (pH 2, 0.7 g of VIFP, contact time of 180 min, and initial CR concentration of 10 mg/L at a temperature range of 298-328 K).

ΔG° (kJ/mol)							°(kJ/mol)	°(kJ/mol.K)		SD
298 K	303 K	308 K	313 K	318 K	323 K	328 K
-5.78	-6.57	-7.37	-8.16	-8.95	-9.74	-10.53	41.42	158.32	0.9696	0.146