Table 2. Comparison of Pb(II) and Cd(II) Removal from Industrial Wastewater Using Different Adsorbents.
| adsorption capacity (mg g–1) |
|||
|---|---|---|---|
| adsorbent | Pb(II) | Cd(II) | references |
| waste mud | 24.4 | (53) | |
| chitin-based Chitorem SC-80 | 1.2 | 1.81 | (54) |
| chitosan | 58.71 | (55) | |
| iron oxide-coated sludge | 42.4 | 14.7 | (56) |
| iron slag | 95.24 | (57) | |
| steel slag | 32.26 | (57) | |
| xanthate-modified apple pomace | 178 | 112 | (58) |
| polyacrylamido-2-methyl-1-propane sulfonic acid | 0.4–4.3 | 0.19–0.52 | (59) |
| peanut husk powder | 27.03 | 11.36 | (60) |
| shoe material type I | 60 | (61) | |
| shoe material type II | 85 | (61) | |
| O-MWCNT | 27.07 | 24.4 | this study |
| MoS2/SH-MWCNTs | 90.0 | 66.67 | this study |