ISSN:
0006-3592
Keywords:
modeling
;
layered anaerobic granular biofilms
;
biofilm detachment model
;
Chemistry
;
Biochemistry and Biotechnology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
A model that portrays substrate profiles in a steady-state multispecies granular biofilm is developed and coupled with a biofilm detachment model. The model accounts for glucose, propionate, hydrogen, and acetate transformations performed by three bacterial trophic groups: acidogens, syntrophic bacterial consortia, and methanogens. This model adequately describes the phenomenon of propionate degradation under thermodynamically unfavorable bulk hydrogen concentrations. Also suggested is the superiority of the layered biofilm structure over homogeneous distribution of the trophic groups for anaerobic degradation of organic compounds. Furthermore, model analysis suggests that with increasing bulk glucose concentration biofilm thickness reaches a maximum that is then followed by biofilm disintegration. These results may have an important impact on the design and control of upflow anaerobic sludge bed reactors. © 1997 John Wiley & Sons, Inc. Biotechnol Bioeng 54: 122-130, 1997.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
Permalink
