Development and calibration of bio-kinetic model for surfactant biodegradation with combined respirometric and titrimetric measurements

Article

Aravinthan, V. and Hoque, M. A.. 2011. "Development and calibration of bio-kinetic model for surfactant biodegradation with combined respirometric and titrimetric measurements." Bioresource Technology. 102 (9), pp. 5504-5513. https://doi.org/10.1016/j.biortech.2010.08.101
Article Title

Development and calibration of bio-kinetic model for surfactant biodegradation with combined respirometric and titrimetric measurements

ERA Journal ID3454
Article CategoryArticle
AuthorsAravinthan, V. (Author) and Hoque, M. A. (Author)
Journal TitleBioresource Technology
Journal Citation102 (9), pp. 5504-5513
Number of Pages10
Year2011
PublisherElsevier
Place of PublicationNetherlands
ISSN0960-8524
1873-2976
Digital Object Identifier (DOI)https://doi.org/10.1016/j.biortech.2010.08.101
Web Address (URL)https://www.sciencedirect.com/science/article/abs/pii/S0960852410014860
Abstract

Substrate removal mechanism in aerobic activated sludge processes was lately modeled using the simultaneous storage and growth (SSAG) phenomenon. The SSAG model was further refined with titrimetric components and successfully calibrated using both respirometric and titrimetric measurements for common substrate acetate. However, the improved SSAG model calibration was not verified with other organic substrates. Furthermore, very few studies are available in the literature on surfactant bio-kinetics, which generally use off-line experimental measurements with limited model-based interpretation. Therefore, the aim of this paper is to demonstrate its applicability for surfactant biodegradation using on-line measurements. Batch experiments were conducted using sodium dodecyl sulfate (SDS) as a test surfactant. Model calibration was done successfully for three different SDS concentrations using respirometric, titrimetric and combined respirometric–titrimetric measurement approaches. The parameter estimation results from all three stated combinations were statistically evaluated and found to be very close validating the model.

Keywordssodium dodecyl sulfate (SDS); model calibration; parameter estimation; simultaneous storage and growth (SSAG); respirometric and titrimetric measurements
ANZSRC Field of Research 2020401199. Environmental engineering not elsewhere classified
340402. Biomolecular modelling and design
400401. Carbon capture engineering (excl. sequestration)
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Byline AffiliationsAustralian Centre for Sustainable Catchments
Institution of OriginUniversity of Southern Queensland
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