Attached biomass concentration is an important parameter that determines fluidized bioreactor efficiency. The feasibility of correlating attached biomass concentration and biofilm thickness was confirmed via empirical equations and experimental verification. The results indicate that biofilm thickness is an important parameter that correlates with biomass attachment and fluidized bed expansion. In a fluidized bioreactor with negligible wall effects and containing regular slight-heavy particles as bio-carriers, biomass attachment, bed expansion, fluidization-pressure drop curve can all linearly correlated with biofilm thickness as: m= 0.154 9δ + 0.161 8, ε0 = 0.005 5δ +1.128 1, n = 0.028 9δ +1.212 6 and logut = -7.370 6logdp + 27.148 when δ > 5 μm. The attached biomass concentration can be expressed as a function of biofilm thickness and superficial liquid velocity, which helps to understand the effect of biomass thickness and operating liquid velocity on biomass concentration. The results are beneficial for stable operation of fluidized bioreactors.
|Translated title of the contribution
|Correlation of attached biomass concentration and biofilm thickness in a fluidized bioreactor
|Number of pages
|Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities
|Published - Apr 2019
ASJC Scopus subject areas
- General Chemical Engineering