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Table 1

Specific growth rate and final optical density (OD750) of Chlorella sorokiniana NIES-2173 and cultivation conditions using different NH3 concentrations

Initial NH3 [TAN] concentration (mM)Specific growth ratea (d−1)Final OD750Final pHTAN reduction (%)Final TAN concentration (mM)
0 [0] 1.85 ± 0.22 0.10 ± 0.02 9.47 – – 
0.9 [17] 1.32 ± 0.53 0.13 ± 0.02 9.21 78 3.7 ± 1.2 
1.8 [34] 0.77 ± 0.37 0.08 ± 0.02 8.63 69 10.5 ± 3.6 
2.7 [50] −0.14 ± 0.37 0.03 ± 0.01 8.01 44 28.2 ± 3.5 
3.6 [67] −0.16 ± 0.28 0.03 ± 0.02 7.93 21 53.2 ± 1.2 
Initial NH3 [TAN] concentration (mM)Specific growth ratea (d−1)Final OD750Final pHTAN reduction (%)Final TAN concentration (mM)
0 [0] 1.85 ± 0.22 0.10 ± 0.02 9.47 – – 
0.9 [17] 1.32 ± 0.53 0.13 ± 0.02 9.21 78 3.7 ± 1.2 
1.8 [34] 0.77 ± 0.37 0.08 ± 0.02 8.63 69 10.5 ± 3.6 
2.7 [50] −0.14 ± 0.37 0.03 ± 0.01 8.01 44 28.2 ± 3.5 
3.6 [67] −0.16 ± 0.28 0.03 ± 0.02 7.93 21 53.2 ± 1.2 

aCalculated from the OD750 between 8 and 24 hours of the logarithmic growth period.

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