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Table 1 Overview of average and maximal areal and volumetric productivities and average and maximal photosynthetic efficiencies obtained in summer 2013 (July–August)

From: Comparison of four outdoor pilot-scale photobioreactors

Photobioreactor ORP HT VT FP
Avg Max Avg Max Avg Max Avg Max
P x,ground (g m−2 day−1) 9.7 14.0 12.1 15.7 19.4 24.4 20.5 27.5
P x,vol (g L−1 day−1) 0.03 0.08 0.65 0.85 0.57 0.71 0.90 1.20
Dilution rate (day−1) 0.14 0.12 0.25 0.34 0.27 0.40 0.27 0.36
Number of days 24 8 36 8 36 8 36 4
Photosynthetic efficiency (% sunlight) 1.1 1.5 1.5 1.8 2.4 4.2 2.7 3.8
Dilution rate (day−1) 0.16 0.12 0.25 0.28 0.27 0.24 0.27 0.18
Number of days 24 8 36 6 36 9 36 3
  1. Dilution rates are measured values. Maximal areal and volumetric productivities were obtained in a single week in July with a high average photon flux density; 44 mol m−2 day−1