Table 3 Maximum adsorption capacities (qm) of Cr(VI) adsorption on nWTRs and the other adsorbents documented in the literature.
Adsorbents | Adsorption capacity (qmax) (mg/g) | References |
|---|---|---|
Nano Water Treatment Residuals (nWTRs) | 40.65 | Present study |
Bulk Water Treatment Residuals (bWTRs) | 2.78 | Present study |
Humus-supported nanoscale zero-valent iron | 40.40 | |
Fe modified activated carbon | 34 | |
NH2-amorphous silica nanoparticle | 34 | |
AC/bentonite/magnetite nanocomposite | 29.32 | |
Bagasse magnetic biochar (BMBC) | 29.08 | |
MgO/Fe3O4nanocomposite | 23.9 | |
Bentonite supported nZVI | 22.67 | |
Maghemite nanoparticles | 19.20 | |
Mesoporous magnetic γ-Fe2O3 | 16 | |
Multi-wall carbon nanotubes | 2.48 | |
Goethite | 6.62 | |
Zeolite NaX | 6.41 | |
Activated alumina | 1.6 |
