| Metal | Equation | qe.cal (mg/g) | qe.exp (mg/g) | K1 (min−1) | R2 |
| Pb(II) | log(qe − qt) = 0.0171t − 1.5363 | 0.0418 | 0.474 | −0.0394 | 0.26 |
| Cu(II) | log(qe − qt) = −0.0085t − 1.1648 | 0.0684 | 0.399 | 0.0196 | 0.20 |