Table 3 Parameters values of the pseudo second order model of Pb(II) adsorption onto LHMDIC and LPDIC
From: Olive industry liquid waste from trash to metal adsorbent for wastewater purification
LHMDIC | LPDIC | |||||
|---|---|---|---|---|---|---|
K2 (g/mg min) | Qcal (mg/g) | R2 | K2 (g/mg min) | Qcal (mg/g) | R2 | |
Pb2+ | 1.161 | 0.292 | 0.9737 | 1.141 | 0.177 | 0.975 |
Parameters obtained by the intra-particle diffusion model for adsorption of Pb(II) ions onto LHMDIC and LPDIC | ||||||
|---|---|---|---|---|---|---|
T (K) | LHMDIC | LPDIC | ||||
Kid | Z | R2 | Kid | Z | R2 | |
Pb2+ | 25.972 | 3.810 | 0.947 | 30.824 | 1.438 | 0.983 |
Thermodynamic parameters values for Pb(II) adsorption onto LHMDIC and LPDIC | |||
|---|---|---|---|
T(K) | Pb2+ | ||
∆G° (KJ/mol) | ∆H° (KJ/mol) | ∆S° (J/K.mol) | |
LHMDIC | − 22.495 | 15.040 | 75.450 |
LPDIC | − 19.520 | 12.345 | 65.575 |
Kdf | R2 | ||
|---|---|---|---|
LHMDIC | 2.350 | 0.914 | |
LPDIC | 2.422 | 0.895 |