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. 2021 Mar 18;12:652766. doi: 10.3389/fmicb.2021.652766

FIGURE 4.

FIGURE 4

Cell growth and performance of aerobic denitrification by six novel species within 24 h in this study. (A) NO3 –N removal rate, NO2 –N accumulation, and cell OD600 with an initial Na15NO3 concentration of 15 mM. (B) 30N2 and N2O production within 24 h as well as final O2 percentage, with an initial O2 content of 25%. The data are shown as mean value ± SD from three independent measurements.