Table 2 Growth rates of azolla, associated nutrients removals and chlorophyll concentrations in different dilutions of ADSW
Azolla (A. filiculoides) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
ADSW dilutions | Growth rate, g dw/m2-day | NH4-N, mg/L, Final | NH4-N uptake,% | NH4-N uptake rate, mg/l-day | PO4-P, mg/L, Final | PO4-P uptake,% | PO4-P uptake rate, mg/l-day | N/P uptake | Chl A + B μg/ml |
ADSW, 100% | NA | NA | NA | NA | NA | NA | NA | NA | NA |
ADSW, 50% | NA | NA | NA | NA | NA | NA | NA | NA | NA |
ADSW, 25% | NA | NA | NA | NA | NA | NA | NA | NA | NA |
ADSW, 15% | -1.5 | 58 ± 5.7 | 43.0 ± 3.3 | 4.38 ± 1.9 | 23.5 ± 3.9 | 4.8 ± 1.1 | 0.12 ± 0.07 | NA | 6.1 ± 1.1 |
ADSW, 10% | -1.3 | 28.8 ± 3.3 | 56.4 ± 3.8 | 3.73 ± 0.7 | 10.2 ± 2.2 | 36.6 ± 3.9 | 0.59 ± 0.3 | 6.32 | 4.1 ± 1.0 |
ADSW, 5% | 1.1 ± 0.1 | 22.1 ± 2.5 | 31.2 ± 4.8 | 1.2 ± 0.3 | 6.4 ± 1.0 | 21.4 ± 4.7 | 0.17 ± 0.03 | 5.88 | 2.8 ± 0.8 |
ADSW, 2.5% | 5.6 ± 1.8 | 0.0 | 100.0 | 1.61 ± 0.9 | 0.8 ± 0.07 | 82.6 ± 7.6 | 0.38 ± 0.07 | 4.30 | 1.9 ± 0.9 |
ADSW, 1.2% | 4.6 ± 1.1 | 0.0 | 100.0 | 0.88 ± 0.1 | 0.0 | 100.0 | 0.25 ± 0.05 | 3.51 | 0.1 ± 0.08 |