Research Article
The Improvement of Natural Thai Bentonite Modified with Cationic Surfactants on Hexavalent Chromium Adsorption from an Aqueous Solution
Table 5
Cr concentration in the sample after adsorption.
| Cr valency state | Adsorbent | Concentration of Cr in powder (mg g-1) | Concentration of Cr in solution (mg L-1) |
| Cr(VI) | 1CPC | 37.22 | 130.77 | | 1HDTMA | 43.94 | 113.93 | Cr(III) | NTB | 71.69 | 69.87 | | 1CPC | 60.12 | 93.01 | | 1HDTMA | 53.75 | 105.75 |
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