H. Uemoto et H. Saiki, Distribution of Nitrosomonas europaea and Paracoccus denitrificans immobilized in tubular polymeric gel for nitrogen removal, APPL ENVIR, 66(2), 2000, pp. 816-819
To improve the cooperative removal of nitrogen by Nitrosomonas europaea and
Paracoccus denitrificans, we controlled their distribution in a tubular ge
l. When ethanol was supplied inside the tubular gel as an electron donor, t
heir distributions overlapped in the external region of the gel. By changin
g the electron donor from ethanol to gaseous hydrogen, the distribution of
P. denitrificans shifted to the inside of the tube and was separated from t
hat of N. europaea. The separation resulted in an increase of the oxidation
rate of ammonia by 25%.