Research Article
The Improvement of Natural Thai Bentonite Modified with Cationic Surfactants on Hexavalent Chromium Adsorption from an Aqueous Solution
Table 8
Elemental composition (%) of NTB, 1CPC, 1HDTMA, and MTBs after Cr(VI) adsorption.
| Elemental composition (K) | Adsorbent | NTB | 1CPC | 1HDTMA | 1CPC+Cr(VI) | 1HDTMA+Cr(VI) |
| O | 51.2 | 23.9 | 30.7 | 33.6 | 34.3 | Ca | 25.2 | 0.9 | 11.3 | 1.0 | 0.1 | C | 13.1 | 40.2 | 35.2 | 31.9 | 36.9 | Si | 7.2 | 23.6 | 15.7 | 24.4 | 21.2 | Al | 2.0 | 6.8 | 3.0 | 5.6 | 4.2 | Mg | 1.0 | 1.5 | 0.6 | 0.9 | 0.7 | Fe | 0.4 | 1.4 | 1.9 | 1.0 | 0.6 | Cl | 0.0 | 1.7 | 0.0 | 0.0 | 0.0 | Br | 0.0 | 0.0 | 1.6 | 0.0 | 1.3 | Cr | 0.0 | 0.0 | 0.0 | 1.0 | 0.7 |
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