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Table 2 The effect of different CO 2 concentrations supplied by flue gas (Fl) and one concentration supplied by pure liquid CO 2 gas (C) on pH, O 2 concentration in the culture and dry weight concentration (n=3, ±SE) after 3 and 5 days of C. reinhardtii grown at 75 and 300 μmol m -2 s -1 PFD

From: The effect on growth of Chlamydomonas reinhardtii of flue gas from a power plant based on waste combustion

   Day 3 Day 5 Mean dry weight production
Day 0 - 3
CO2treatment PFD pH O2(mg l-1) Dry w. (mg l-1) pH Dry w. (mg l-1) mg l-1day-1 g m-2day-1 g mol-1
2.6% C 75 7.1±0.0 7.5±0.2 798±27 6.9±0.1 1360±149 266±9 16.2±0.6 2.50±0.09
2.6% C 300 7.0±0.1 8.3±0.1 3297±46 6.8±0.1 3040±94 1099±15 67.0±0.9 2.59±0.04
2.5% Fl 75 7.3±0.1 7.8±0.4 877±84 7.1±0.1 1338±88 292±28 17.8±1.7 2.74±0.26
2.5% Fl 300 7.0±0.0 8.5±0.1 3527±48 6.8±0.1 3423±91 1175±16 71.7±0.9 2.77±0.04
6.7% Fl 75 7.0±0.1 7.0±0.3 845±36 6.6±0.1 1343±70 282±12 17.2±0.8 2.64±0.12
6.7% Fl 300 6.7±0.0 7.5±0.2 3663±124 6.4±0.2 3343±91 1221±41 74.5±2.5 2.89±0.10
11.4% Fl 75 6.8±0.1 6.4±0.2 777±14 6.5±0.1 1147±23 259±5 15.8±0.3 2.43±0.04
11.4% Fl 300 6.7±0.1 7.3±0.2 2933±36 6.5±0.1 2843±45 978±12 59.6±0.7 2.30±0.03
F-value and significance level:    
CO2   64.5*** 50.9*** 17.6*** 25.6*** 3.54* 17.6*** 17.6*** 5.73**
PFD   91.1*** 77.4*** 3512*** 10.7** 403*** 3511*** 3511*** 0.51
CO2 x PFD   3.79* 0.59 10.9*** 1.32 1.25 10.9*** 10.9*** 0.89
  1. The productivity during the first three days was calculated as the increase in culture concentration, in g dry weight production per m2 and day, as well as in g dry weight produced per mol of photosynthetic active radiation. F-values and significance levels are stated as follows: *p<0.05; **p<0.01; ***p<0.001.