Record Display for the EPA National Library Catalog
RECORD NUMBER: 21 OF 39Main Title | Modeling Chemical Interactions in Anaerobic Biofilm Systems. | |||||||||||
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Author | Flora, J. R. V. ; Suidan, M. T. ; Biswas, P. ; Sayles., G. D. ; | |||||||||||
CORP Author | Cincinnati Univ., OH. Dept. of Civil and Environmental Engineering.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. | |||||||||||
Publisher | c1993 | |||||||||||
Year Published | 1993 | |||||||||||
Report Number | EPA/600/A-94/052; | |||||||||||
Stock Number | PB94-159290 | |||||||||||
Additional Subjects | Anaerobic processes ; Mathematical models ; Bioreactors ; Reprint ; pH ; Methanol ; Acetate ; Reaction kinetics ; Mass transfer ; Thin films ; Waste water treatment ; Organic compounds ; Diffusion coefficient ; Flux(Rate) ; Concentration(Composition) ; Biofilm ; CSTR(Completely-stirred tank reactor) ; Electroneutrality | |||||||||||
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Collation | 14p | |||||||||||
Abstract | Rigorous steady-state models of acetate- and methanol-utilizing methanogenic biofilms are developed taking into account the mass transfer of neutral and ionic species, pH changes within the biofilm, pH-dependent Monod kinetics, chemical equilibrium, electroneutrality, gas production within the biofilm, and the presence of a concentration boundary layer (CBL). The study shows that significant differences can exist between the flux predictions using the traditional models and when pH changes within the biofilm are taken into account. The biofilm models are coupled to a model of a completely-stirred tank reactor (CSTR) and strategies for the optimization of biofilm reactor performance are examined. (Copyright (c) 1993 Water Environment Federation.) |