Removal of Lead from Water Using Calcium Alginate Beads Doped with Hydrazine Sulphate-Activated Red Mud as Adsorbent

Table 2

Thermodynamic parameters of adsorption of the lead on HRMCAB.

T(K)	Kd (L/g)	Vant Hoff equation: ln (Kd) = (ΔS^0/R) − (ΔH^0/RT)	ΔH (kJ/mole)	ΔS (J/mole)	R^2	ΔG (kJ/mole)
303	16.30	y = −9581x + 34.078	79.656	283.32	0.9013	−6.189
313	22.92					−9.022
323	52.59					−11.855
333	301.51					−14.689