Parameter

Nitritification

(i.e., Nitrosomonas sp.)

Anammox

(i.e., Cand. Brocadia sp.)

Unit

NH₄⁺ + O₂ → NO₂^-

+ H₂O + 2H⁺

NH₄⁺+ NO₂^- → N₂

+ 2 H₂O

Free Energy

-275

-357

kJ/mol

Biomass yield

0.08

0.07

Cmol/mol NH₄⁺

Aerobic rate

200-600

0

nmol/min.mg protein

Anaerobic rate

2

60

nmol/min.mg protein

Growth rate (m _max)

0.04 (aerobic)

0.003 (anaerobic)

h^-1

Doubling time

0.73 (aerobic)

10.6 (anaerobic)

Days

K_s (NH₄⁺)

5-2600

5

µM

K_s (NO₂^-)

N/a

<5

µM

K_s (O₂)

10-50

N/a

µM