Table 1. Photosynthetic efficiencies of microalgae in LED-based PBRs.
Algae species | LED illumination (µE/m2/s) |
Biomass productivity (gDCW/L/day) | Biomass yield (g/E) | Photosynthetic efficiency* (%) | |
---|---|---|---|---|---|
P. tricornutum# | Prior to ALE | 204 (100% red) | 0.32 ± 0.02 | 0.18 ± 0.01 | 2.0 |
204 (50% red and 50% blue) | 0.64 ± 0.02 | 0.36 ± 0.01 | 3.3 | ||
D. salina 20 | After ALE | 170 (100% red) | 0.40 ± 0.01 0.22 ± 0.01 |
0.27 ± 0.01 0.15 ± 0.01 |
3.0 1.7 |
Prior to ALE | |||||
After ALE | 170 (75% red and 25% blue) | 0.48 ± 0.02 0.40 ± 0.01 |
0.33 ± 0.01 0.27 ± 0.01 |
3.3 2.7 |
|
Prior to ALE | |||||
C. vulgaris 19 | After ALE | 300 (100% red) | 2.11 ± 0.13 | 0.81 ± 0.05 | 9.0 |
Prior to ALE | 255 (100% red) | 0.71 ± 0.05 | 0.32 ± 0.02 | 3.6 |
*A biomass combustion energy of 20.15 kJ is assumed; # model species (CCAP 1055/1) in this work.