Table 1.
Recovery of Te in different fractions at the end of the experiment.
| R1 | R2 | |
|---|---|---|
|
| ||
| ΣQTe inf (g) | 1.63 | 1.69 |
| ΣQTe eff (g) | 0.461 | 0.002 |
| ΣQTe eff/ΣQTe inf (%) | 28.3 | 0.1 |
| ΣQTe inf − ΣQTe eff (g) | 1.17 | 1.69 |
| (ΣQTe inf − ΣQTe eff)/ΣQTe inf (%) | 71.7 | 99.9 |
| XTe (g) | 1.165±0.0002 | 0.673±0.024 |
| Te in glass beads (g) | - | 0.391±0.007 |
| ΣQTe inf − ΣQTe eff- XTe-Tein glass beads (g) | - | 0.619 |
| XTe/(ΣQTe inf − ΣQTe eff) (%) | 99.6 | 39.8 |
| (XTe + Tein glass beads)/(ΣQTe inf - ΣQTe eff) (%) | 99.6 | 63.0 |
| CollTe (g) | 0.105±0.001 | 0.028±5.85×10−5 |
| UFTe (g) | 4.175×10−3±4.38×10−5 | 9.44×10−5 ±2.30×10−6 |
| CollTe-UFTe (g) | 0.101±0.001 | 0.028±5.62×10−6 |
| Te0 NP/(XTe) (%) | 8.68±0.10 | 39.3* |
This percentage was estimated assuming that the Te associated to the beads at bottom of R2 was formed externally to the cells.
Cumulative Te fed to the column (ΣQTe inf)
Cumulative Te discharge with effluent (ΣQTe eff)
Fraction of cumulative Te discharge with effluent compared to total Te fed to the column (ΣQTe eff/ΣQTe inf)
Estimated cumulative Te retained in the column (ΣQTe inf − ΣQTe eff)
Fraction of cumulative Te retained in the column compared to total Te fed to the column (ΣQTe inf − ΣQTe eff)/ΣQTe inf
Te found retained by the sludge (XTe)
Total Te found associated to glass beads (Tein glass beads)
Total Te lost to the glass beads of the reactors (ΣQTe inf − ΣQTe eff− XTe-Tein glass beads)
Total Te recovered by sludge digestion (XTe/(ΣQTe inf − ΣQTe eff))
Total Te recovered by digestion and attached to glass beads (XTe + Te in glass beads)/(ΣQTe inf − ΣQTe eff) (%)
Total Te associated to the sludge (see section 2.6, soluble and in suspension) after 1.5 min settling (CollTe)
Total soluble Te associated to the sludge in suspension after 1.5 min settling (see section 2.6, Te passing through 3KDa filter (UFTe))
Te0 NPs formed extracellularly associated to the sludge (CollTe-UFTe)
Fraction of Te0 found as extracellular material (Te0 NP/(XTe))