| Adsorbent | Ads. Cap. (mg/g) | Ref |
| Fe3O4@Zn-Al-LDH | 36.9 | Zaidi et al., 2014 |
| Fe3O4@Mn-Al-LDH | 31.7 | Zaidi et al., 2014 |
| Fe3O4@Ni-Al-LDH | 26.5 | Zaidi et al., 2014 |
| Fe3O4 − Fe/Mn | 6.8 | Long et al., 2011 |
| Fe3O4 − Sand | 1.5 | Biswas et al., 2008 |
| Fe3O4 − ATP | 16.6 | Pan et al., 2011 |
| Fe3O4 − MMT | 18.8 | Peng et al., 2006 |
| Fe3O4 − SEP | 20.5 | Liu et al., 2014 [13] |
| Fe3O4 − Zeolite | 18.9 | Bourlinos et al., 2003 |
| Iron oxide-doped activated carbon | 14.1 | Wang et al., 2008 |
| An hydrous iron-oxide | 29.5 | Zeng et al., 2004 |
| Iron hydroxide eggshell | 2.02 | Mezenner et al., 2009 |
| Fe3O4 − Kaolin | 52.91 | This study |