Research Article
Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite
Table 5
Pb(II) adsorption capacity of different adsorbents.
| | Adsorbent | Adsorption capacity (mg g–1) | pH | Reference |
| | Mn/diatomite | 81.42 (303 K) | Neutral | This work | | Natural diatomite | 16.31 (303 K) | Neutral | This work | | Nano-MnO2 | 19.42 (303 K) | Neutral | This work | | Mn/diatomite | 99 (289 K) | 4 | [10] | | Diatomite | 24.94 (296 K) | 4 | [11] | | Mn/diatomite | 99 (296 K) | 4 | [11] | | Raw DE | 8.5058 (303 K) | Neutral | [36] | | MnO2@DE | 56.843 (303 K) | Neutral | [36] | | Silicalite-1-NH2 | 43.5 (298 K) | 5.5 | [65] | | MCM-48-NH2 | 75.2 (298 K) | 5.5 | [65] | | MCM-48-SH | 31.2 (298 K) | 5.5 | [65] | | Aminopropyl-MCM-41 | 64.21 (300 K) | Neutral | [49] | | Leonardite | 23.89 (303 K) | 6 | [50] | | Biological sludge through ferric activation | 42.96 (298 K) | 5 | [7] | | Chitosan-tripolyphosphate bead | 57.33 (300 K) | 4.5 | [44] |
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