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Modelling and dynamic simulation of a moving bed bioreactor using respirometry for the estimation of kinetic parameters

Paper ID Volume ID Publish Year Pages File Format Full-Text
4760 243 2007 7 PDF Available
Title
Modelling and dynamic simulation of a moving bed bioreactor using respirometry for the estimation of kinetic parameters
Abstract

Respirometry was used for the characterization of active autotrophic and heterotrophic biomass in a pilot scale moving bed bioreactor (MBBR). For this purpose biofilm samples attached to the carrier elements of the MBBR were transferred to a static gas/static liquid type respirometer with intermittent aeration. Known amounts of ammonia nitrogen and acetate were added to the respirometer. The dissolved oxygen (DO) decrease during the non-aeration phase was measured and used to calculate the oxygen uptake rate (OUR) of the active biomass. The resulting respirograms featured the typical endogenous and exogenous respiration phases and the shape of the respirogram was as expected from analogous respirometry with activated sludge. The OUR response was modelled with the activated sludge model ASM1 and the relevant kinetic parameter values for autotrophic and heterotrophic growth were adjusted. The adjusted parameter set and data originating from a 4-day long intensive measurement campaign were used for modelling and simulation of the pilot scale MBBR. The parameter estimation resulted in a good dynamic simulation of ammonia and nitrate variations in the effluent of the MBBR. Important MBBR properties including biofilm age, biofilm composition, and both attachment and detachment rate were extracted from the model.

Keywords
Biofilms; Biofilm age; Dynamic simulation; Kinetic parameters; Moving bed bioreactors; Respirometry
First Page Preview
Modelling and dynamic simulation of a moving bed bioreactor using respirometry for the estimation of kinetic parameters
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 33, Issue 3, March 2007, Pages 253–259
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering