[Kinetics of anaerobic ammonia oxidation].
The kinetic characteristics of anaerobic ammonia oxidation was studied. The cell yield was 1.573 mgVS (mmolNH4+)-1 and the cell decay coefficient was 0.052 mgVS(gVS.d)-1. The maximal rate of anaerobic ammonia oxidation and nitrite conversion rate by the mixed culture were 1.320-2.761 mmol(gVS.d)-1 and 14.497 mmol(gVS.d)-1, respectively. Km for ammonia and for nitrite were 1.801-4.215 and 0.468 mmol.L-1. Ki for ammonia was 38.018-98.465 mmol.L-1, the optimal ammonia concentration was 16.656 mmol.L-1. Ki for nitrite was 5.401-11.995 mmol.L-1. The optimal pH was around 7.5 and the theoretical value was 7.605. The optimal temperature was about 30 degrees C. The activation energy for Vmaxa, Kma, Kia and Kin was 37.316, 30.239, 33.695 and 30.473 kJ.mol-1.
Zheng
P
P
Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.
Hu
B L
BL
D000641:Ammonia / Q000378:metabolism*; D000693:Anaerobiosis; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010084:Oxidation-Reduction; D013696:Temperature
D000641:Ammonia