Calibration of biokinetic model for acetate biodegradation using combined respirometric and titrimetric measurements

Article

Hoque, M. A., Aravinthan, V. and Pradhan, N. M.. 2010. "Calibration of biokinetic model for acetate biodegradation using combined respirometric and titrimetric measurements." Bioresource Technology. 101 (5), pp. 1426-1434. https://doi.org/10.1016/j.biortech.2009.07.012
Article Title

Calibration of biokinetic model for acetate biodegradation using combined respirometric and titrimetric measurements

ERA Journal ID3454
Article CategoryArticle
AuthorsHoque, M. A. (Author), Aravinthan, V. (Author) and Pradhan, N. M. (Author)
Journal TitleBioresource Technology
Journal Citation101 (5), pp. 1426-1434
Number of Pages9
Year2010
PublisherElsevier
Place of PublicationAmsterdam, Netherlands
ISSN0960-8524
1873-2976
Digital Object Identifier (DOI)https://doi.org/10.1016/j.biortech.2009.07.012
Abstract

Simultaneous storage and growth model has recently gained increased acceptance among researchers that can better interpret the processes occurring in activated sludge processes during aerobic biodegradation of organic carbon. The model underwent further improvement and was successfully calibrated using respirometric measurements, acetate being a test substrate. However, model based interpretation of titrimetry needs to be verified for proper validation of this model since pH and dissolved oxygen dynamics occur simultaneously in a batch reactor. Hence, in this paper, it is aimed to modify the existing model by introducing stoichiometric parameters involved in titrimetry in each step of the growth and storage phases along with the consideration of non-linear carbon dioxide transfer rate in liquid phase. The model calibration was done for three different acetate concentrations using titrimetric, respirometric and combined respirometric-titrimetric measurements. The parameter estimation results from all three combinations were found to be very close that supports the validity of the model.

Keywordsbiokinetic model; parameter estimation; respirometric data; titrimetric data; biomass growth; oxygen uptake rate (OUR)
ANZSRC Field of Research 2020401199. Environmental engineering not elsewhere classified
349999. Other chemical sciences not elsewhere classified
400401. Carbon capture engineering (excl. sequestration)
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Byline AffiliationsAustralian Centre for Sustainable Catchments
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