Table B1

Descriptive statistics of the observations obtained from the literature reported in Table 1.

  Electrode area (cm2) Reactor volume (dm3) Initial COD (mg O2/l) Initial N-NH4 (mg/l) Test duration (min)
Valid 115 115 110 60 114
Missing 0 0 5 55 1
Std. Deviation 2141 47 6807 913 133
Minimum 0.785 0.04 330 75 60
Maximum 10500 230 51500 2600 480
25th percentile 10 0.20 1185 462 180
50th percentile 29 0.50 1870 1077 240
75th percentile 50 0.55 3500 2500 360

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