Polyvinyl chloride Waste as an Adsorbent for the Sorption of Pb²⁺ from Aqueous Solution

Table 2

Thermodynamic parameters.

Heat of adsorption; 𝑄ads (KJ/Kmol)	Sticking probability; 𝑆^∗	Activation energy; 𝐸𝑎 (J/K mol)	Gibbs free energy of adsorption; Δ𝐺^𝑜 (KJ/mol)	Apparent entropy; Δ𝑆^𝑜 (J/Kmol)	Apparent enthalpy; Δ𝐻^𝑜 (J/mol)	Adsorption density; 𝜌 (mol/cm^2)	Hopping number; 𝑛	Adsorption potential; 𝐴 (KJ/mol)
−48.45	0.0498	−345.0	−10.70	24.94	−376.4	9.67×10^−4	11	10.74