FIGURE 7.

(A) NO₂^– and NO₃^– production rates of the enrichment sample from the NH₄Cl-fed bioreactor at different NH₄Cl concentrations. The initial pH of media was adjusted to 5.5. (B) NO₂^– and NO₃^– production rates of the enrichment sample from the NH₄Cl-fed bioreactor at different pH values. The medium was supplemented with 12.5 mM of NH₄Cl. Data show means and error bars show standard deviation of biological triplicates. Green dashed lines show the theoretically calculated concentrations of NH₃.