| Title: | Consecutive reaction kinetics involving distributed fraction of methanogens in fluidized-bed bioreactors |
| Author(s): | Wu CS; Huang JS; Yan JL; Jih CG; |
| Address: | "Department of Environmental Engineering, Kung Shan Institute of Technology, Tainan, Taiwan 710, China" |
| ISSN/ISBN: | 0006-3592 (Print) 0006-3592 (Linking) |
| Abstract: | "A kinetic model involving the distributed fractions of acidogens and methanogens is proposed. To determine the fluxes and biochemical reaction rates of the substrate sucrose and its intermediates, volatile fatty acids (VFAs) in bulk liquid and within the biofilm, a kinetic model was developed by combining the solid-phase model with the liquid-phase model. The predicted substrate removal efficiencies of the conventional and tapered fluidized-bed bioreactors (CFB, TFBs) are in good agreement with the experimental results. The biofilm thickness in TFBs are thicker than that in CFB, resulting in performance enhancement with TFBs. The simulated results obtained from the kinetic model show that methanogenesis is the rate-limiting step of degradation of the simple organic compound (sucrose), and the chemical oxygen demand (COD) concentration in the effluent is mainly contributed by the intermediates VFAs. The distributed fractions of acidogens and methanogens determined experimentally are 0.4 and 0.6, respectively" |
| Keywords: | "Biodegradation, Environmental Biofilms *Bioreactors Biotechnology Euryarchaeota/*metabolism Fatty Acids, Volatile/metabolism Kinetics Models, Biological Sucrose/metabolism;" |
| Notes: | "MedlineWu, C S Huang, J S Yan, J L Jih, C G eng Comparative Study Research Support, Non-U.S. Gov't 1999/04/01 Biotechnol Bioeng. 1998 Feb 5; 57(3):367-79" |
