Table 5 Comparison of the maximum adsorption capacity of Pb(II) and Cd(II) with other adsorbents in powdery morphology.
Adsorbent | Adsorbate | Temperature (°C) | Time | Adsorption capacity (mg/g) | BET surface area (m2/g) | References |
|---|---|---|---|---|---|---|
KMnO4-treated magnetic biochar (FMBC) | Pb(II) | 25 | 24Â h | 148 | 137 | Sun et al.60 |
Cd(II) | 79 | |||||
CA-enriched biochar of Chickpea | Pb(II) | 25 | 24 h | 12.1094 | – | Nazari et al.73 |
Cd(II) | 2.4757 | |||||
Cassava root husk-derived biochar with ZnO nanoparticles (CRHB-ZnO3) | Pb(II) | 25 | 60Â min | 44.27 | 2.7964 | Tho et al.74 |
Cd(II) | 42.05 | |||||
Amine-functionalized magnesium ferrite-biochar composite (MgFe2O4–NH2@sRHB) | Pb(II) | 25 | 24 h | 198.93 | 51.30 | Li et al.75 |
Cd(II) | 195.50 | |||||
Fe/S functionalized biochar (BC-Fe-S) | Pb(II) | 45 | 120Â min | 124.62 | 41.30 | Cao et al.76 |
Cd(II) | 57.71 | |||||
Mg/Fe bimetallic oxide-modified biochar | Pb(II) | 25 | 480Â min | 283.4 | 332.84 | Cheng et al.77 |
Cd(II) | 195.5 | |||||
Oyster shell loaded lignite composite adsorbent in powdery morphology (OS-M(P)) | Pb(II) | 25 | 720Â min | 332.62 | 102.676 | This work |
Cd(II) | 318.98 |
