Table 13. Comparison of alginate-chitosan-Fe3O4 performance with other reported materials.
| Adsorbent | As(v) adsorption capacity (mg g−1) | PO43− adsorption capacity (mg g−1) | Contact time (min) | pH@maximum adsorption | Ref. |
|---|---|---|---|---|---|
| Magnesium-alginate/chitosan modified biochar microspheres | — | 46.56 | 30 | 7 | 74 |
| Polyvinyl alcohol/metal ions sodium alginate hydrogel beads | — | 34.2 | 240 | 4 | 75 |
| Bimetallic Zr/Fe-modified chitosan hydrogels | — | 126.50 | 240 | 7 | 14 |
| TiO2@chitosan/alginate nanocomposite | 202.27 | — | 100 | 5 | 70 |
| Core–shell/bead-like ethylenediamine-functionalized Al-pillared montmorillonite/calcium alginate | 61.94 | — | 150 | 4 | 76 |
| Magnetic composite microparticles based on Fe3O4, TiO2 and chitosan/quaternary ammonium salt chitosan derivatives | 34.61 | — | 120 | 7 | 23 |
| Alginate-chitosan-Fe3O4 nanocomposite | 114.5 | 138.2 | 240 | 6.5 | This work |