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. Author manuscript; available in PMC: 2016 May 26.
Published in final edited form as: Nature. 2015 Nov 26;528(7583):555–559. doi: 10.1038/nature16459

Extended Data Figure 1. Ammonium and nitrite conversion by the enrichment culture.

Extended Data Figure 1

Inorganic nitrogen load of the enrichment culture per 24 h cycle (filled symbols) and effluent concentrations (open symbols) for (a) ammonium (diamonds) and (b) nitrite (triangles). Effluent nitrite concentrations were below the detection limit (<5 µM) at all time points. Data points represent the mean of three technical replicates, error bars the standard deviations of these triplicates. Nitrate concentration in the medium varied between 0.5 and 2.0 mM and total organic carbon (TOC) content between 1.30 and 1.44 ppm, which was due to medium preparation with water obtained directly from the RAS.