Open Access
Table 5
Comparison of adsorption capacity of various adsorbents for RhB
| Preparation process of adsorbent | Adsorption condition |
qm
/(mg·g-1) |
Isotherm model | Kinetic model | Ref. |
|---|---|---|---|---|---|
| 100-150 μm leaf powder | C0= 10-50 mg·L-1, pH=6, 30 ℃ |
66.6 | F | PSO | [29] |
| Tea leaf-soaked by 85% H3PO4 → heated at 500 ℃ → dispersed CH2Cl2→ sulfonic acid functionality by chlorosulfonic acid | C0=200-800 mg·L-1, pH=6, 20 ℃ |
757.8 | L | PSO | [30] |
| Pulverized tapioca peel → heated at 600 ℃ → treated by 10% H2SO4→chitosan loaded 0.1 mol/L Na2S2O3 activation | C0=25-150 mg·L-1, pH=8 |
40.9 | L | PSO | [31] |
| Pulverized pine nut shell → heated at 400 ℃ → evenly mixing with potassium hydroxide, melamine and chitosan → heated at 400 ℃ | C0=400 mg·L-1, pH=6, 25 ℃ |
704.3 | L | PSO | [32] |
| Pulverized tea residue→ evenly mixed with magnesium nitrate → heated at 750 ℃ | C0=150-260 mg·L-1, pH=6, 20 ℃ | 809.0 | F, D-R | PSO | This study |
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