Research Article
Removal of Hexavalent Chromium by Using Sustainable Green Materials as Low-Cost Adsorbents
Table 4
The BET results of three types of tea residues before and after NaOH treatment.
| | Green tea | NaOH-treated green tea | Pu-erh | NaOH-treated pu-erh | Tieguanyin | NaOH-treated tieguanyin |
| | BET surface area (m2 g-1) | 0.56 | 0.41 | 0.28 | 1.61 | 0.36 | 1.08 | | The average pore diameter (nm) | 14.65 | 11.53 | 23.90 | 17.75 | 15.45 | 14.11 |
|
|
