固定化微生物の基質利用速度に関する研究

抄録

An equation of specific substrate utilization rate for immobilized microorganism was derived in consideration of external and internal diffusional resistances and microbial substrate utilization. It was expressed by the Michaelis-Menten equation modified replacing the maximum specific substrate utilization rate to η_pν_m and the Michaelis constant to (K_m/K+δ_p) in the case of C_bδ_p/(C_b+K_m/K+δ_p)²«1.
The experimental results of immobilized ammonium and ferrous iron oxidizing bacteria showed that δ_p should be considered because ratios of δ_p to K_m were 0.34 and 1.14, respectively. On the other hand, when microorganisms were dispersed in a culture medium, δ_c could be ignored even in a moderate agitation condition.