Skip to main content

Table 3 Solar energy capture capabilities of rotating floating photobioreactor and conventional photobioreactors under the same foot print

From: An enclosed rotating floating photobioreactor (RFP) powered by flowing water for mass cultivation of photosynthetic microalgae

Photobioreactor type Thickness/diameter (m) Total lengtha/height (m) Width (m) Effective volumeb (L) Expected productivity (g m−2 day−1) Captured solar energyc (kJ m−2 day−1)
RFP 0.140 2.280 0.470 18.000 3.10 62.0
Vertical column/tubular PBR 0.470 0.470 22.480 3.87 77.4
Horizontal column/tubular PBR 0.035 9.620 9.256 1.59 31.8
Inclined column/tubular PBR 0.030 13.149 9.294 1.60 32.0
Vertical plane PBR 0.070 0.740 0.470 24.346 4.19 83.8
Flat plane PBR 0.035 0.740 0.470 12.173 2.10 42.0
Inclined plane PBR 0.030 0.877 0.470 12.366 2.13 42.6
  1. The configuration of compared conventional photobioreactors should be within the space usage of current RFP as 0.74 m length, 0.47 m width, and 0.47 m height
  2. aThe total lengths of column/tube that can be arranged in an area of 0.74 m length and 0.47 m width
  3. bThe effective volumes of photobioreactors which allow solar lights to penetrate 0.035 m depth of culture
  4. cUnder normal growth condition without stress, 1 g of algal biomass contains 20 kJ energy [18]