生物流化床中附着生物浓度与生物膜厚度的关联式研究

Translated title of the contribution: Correlation of attached biomass concentration and biofilm thickness in a fluidized bioreactor

An Qi Liu, Xiao Bo Wang, Zeng Li Zhao, Bing Qing Luo, Hai Bin Li, Jing Xu Zhu

Research output: Journal PublicationArticlepeer-review

Abstract

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 contributionCorrelation of attached biomass concentration and biofilm thickness in a fluidized bioreactor
Original languageChinese (Traditional)
Pages (from-to)410-417
Number of pages8
JournalGao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities
Volume33
Issue number2
DOIs
Publication statusPublished - Apr 2019
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering (all)

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