Table 3.
Summary of the first and repeated batch adsorption tests.
| Adsorbents | 1st Adsorption * | Repeated Adsorption ** | Wa/Wb | ||||
|---|---|---|---|---|---|---|---|
| Wb (mg) |
CDy-1 (mg/g) |
CNd-1 (mg/g) |
CDy-r (mg/g) |
CNd-r (mg/g) |
Wa (mg) |
||
| BMA | 54 | 28.6 | 0.1 | 11.4 | 0.1 | 40 | 0.74 |
| HMA | 66 | 26.2 | 0.6 | 15.0 | 0.1 | 51 | 0.77 |
| DMA | 80 | 24.9 | 0.4 | 22.7 | 0 | 74 | 0.93 |
| OMA | 86 | 26.0 | 1.0 | 25.3 | 0.8 | 82 | 0.95 |
* First adsorption was performed using the new adsorbent, and Wb is the dry weight of the new adsorbent, CDy-1 and CNd-1 are the Dy(III) and Nd(III) adsorptivities of the first adsorption, respectively; ** Repeated adsorption was performed after the adsorbent diluted and adequate water-washed, CDy-r and CNd-r are the Dy(III) and Nd(III) adsorptivities of the repeated adsorption, respectively, and Wa is the dry weight of the used adsorbent after the repeated adsorption and dilution.