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

Hoque, M. A. and Aravinthan, V. and Pradhan, N. M. (2010) Calibration of biokinetic model for acetate biodegradation using combined respirometric and titrimetric measurements. Bioresource Technology, 101 (5). 1426-1434 . ISSN 0960-8524


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.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Awaiting author's Accepted Version which may be deposited in accordance with the copyright policy of the publisher. Article in Special issue of Bioresource technology covering Challenges in Environmental Science & Engineering, CESE – 2009: Waste Treatment: Challenges & Solutions
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 05 Feb 2010 06:51
Last Modified: 02 Jul 2013 23:26
Uncontrolled Keywords: biokinetic model; parameter estimation; respirometric data; titrimetric data; biomass growth; oxygen uptake rate (OUR)
Fields of Research : 09 Engineering > 0907 Environmental Engineering > 090702 Environmental Engineering Modelling
03 Chemical Sciences > 0399 Other Chemical Sciences > 039903 Industrial Chemistry
09 Engineering > 0904 Chemical Engineering > 090401 Carbon Capture Engineering (excl. Sequestration)
Socio-Economic Objective: D Environment > 96 Environment > 9699 Other Environment > 969999 Environment not elsewhere classified
Identification Number or DOI: 10.1016/j.biortech.2009.07.012

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