Table 5 Evaluation of pseudo-second-order and saturation mixed order kinetic models, rate constants and qe estimated for Pb(II) biosorption (Ci = 100 mg/L, pH = 4.5, biosorbent (dry weight) = 0.5 g/L, agitation rate = 180 rpm, temperature = 28 ± 2 °C)
From: Comparative efficacy of locally isolated fungal strains for Pb(II) removal and recovery from water
Biosorbents | Temperature (°C) | |||
|---|---|---|---|---|
25 | 30 | 40 | 50 | |
A. caespitosus | ||||
 qe, expt | 125.0 ± 2.6 | 174.2 ± 4.4 | 176.7 ± 2.3 | 183.6 ± 2.6 |
 Pseudo-second-order | ||||
 qe | 131.57 | 186.21 | 169.49 | 188.67 |
 K2 | 3.5 × 10−4 | 3.9 × 10−4 | − 8.8 × 10−4 | 1.4 × 10−2 |
A. sp. RBSS-303 | ||||
 qe, expt | 54.3 ± 2.6 | 79.9 ± 2.4 | 82.2 ± 4.9 | 93.3 ± 1.8 |
Pseudo-second-order | ||||
 qe | 56.6 | 75.9 | 75.5 | 82.3 |
 K2 | 3.1 × 10−4 | 1.3 × 10−4 | − 4.3 × 10−2 | −2.2 × 10−2 |
A. flavus HF5 | ||||
 qe, expt | 110.6 ± 2.1 | 160.7 ± 1.7 | 164.9 ± 1.3 | 168.4 ± 2.4 |
Pseudo-second-order | ||||
 qe | 111.0 | 160.8 | 171.9 | 177.6 |
 K2 | 2.7 × 10−3 | 8.4 × 10−4 | −3.2 × 10−3 | 4.9 × 10−4 |