화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.27, 207-217, July, 2015
DOI10.1016/j.jiec.2014.12.037  Export Citation
Three-phase CFD simulation coupled with population balance equations of anaerobic syntrophic acidogenesis and methanogenesis reactions in a continuous stirred bioreactor
H. Azargoshasb, S.M. Mousavi†, T. Amani1, †, A. Jafari2, and M. Nosrati
  • Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran
  • 1Department of Chemical Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, Iran
  • 2Chemical Engineering Group, Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran
E-mail:,
Anaerobic digestion is a sequential complex biochemical process that involves a series of reactions that are mediated by several different groups of anaerobic microorganisms. In many anaerobic digesters, syntrophic reactions are regarded as steps that limit the rate of the process. This research describes a simulation based on three-dimensional computational fluid dynamics (CFD) coupled with population balance equations (PBE) of syntrophic (acetogenesis and methanogenesis) reactions in a continuous stirred reactor. The commercial software FLUENT 6.3 was employed to solve the governing equations. A model of Eulerian multiphase and k-εk-ε turbulence (RNG) was formulated to simulate reaction zone hydrodynamics in the reactor with various influent concentrations of volatile fatty acids (VFAs) and hydraulic retention times (HRT). Concentration profiles of VFAs in the three-phase system displayed a heterogeneous flow pattern. Simulation results indicate that VFAs were degraded efficiently and the model was found to be in good agreement with results of experiments, especially at low concentrations of influent VFAs.
Keywords:Three-phase CFD simulation;Anaerobic digestion;Syntrophic interactions;VFAs concentration;Continuous stirred bioreactor
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