Measuring and modeling the oxygen profile in a nitrifying Moving Bed Biofilm Reactor
(2010) In Mathematical Biosciences 227(1). p.1-11- Abstract
- In this paper we determine the oxygen profile in a biofilm on suspended carriers in two ways: firstly by microelectrode measurements and secondly by a simple mathematical model. The Moving Bed Biofilm Reactor is well-established for wastewater treatment where bacteria grow as a biofilm on the protective surfaces of suspended carriers. The flat shaped BiofilmChip P was developed to allow good conditions for transport of substrates into the biofilm. The oxygen profile was measured in situ the nitrifying biofilm with a microelectrode and it was simulated with a one-dimensional mathematical model. We extended the model by adding a CSTR equation, to connect the reactor to the biofilm through the boundary conditions. We showed the dependence of... (More)
- In this paper we determine the oxygen profile in a biofilm on suspended carriers in two ways: firstly by microelectrode measurements and secondly by a simple mathematical model. The Moving Bed Biofilm Reactor is well-established for wastewater treatment where bacteria grow as a biofilm on the protective surfaces of suspended carriers. The flat shaped BiofilmChip P was developed to allow good conditions for transport of substrates into the biofilm. The oxygen profile was measured in situ the nitrifying biofilm with a microelectrode and it was simulated with a one-dimensional mathematical model. We extended the model by adding a CSTR equation, to connect the reactor to the biofilm through the boundary conditions. We showed the dependence of the thickness of the mass transfer boundary layer on the bulk flow rate. Finally, we estimated the erosion parameter lambda to increase the concordance between the measured and simulated profiles. This lead to a simple empirical relationship between lambda and the flow rate. The data gathered by in situ microelectrode measurements can, together with the mathematical model, be used in predictive modeling and give more insight in the design of new carriers, with the ambition of making process operation more energy efficient. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1625670
- author
- Masic, Alma LU ; Bengtsson, Jessica and Christensson, Magnus
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Mathematical Biosciences
- volume
- 227
- issue
- 1
- pages
- 1 - 11
- publisher
- Elsevier
- external identifiers
-
- wos:000281173500001
- pmid:20580728
- scopus:77955272642
- pmid:20580728
- ISSN
- 0025-5564
- DOI
- 10.1016/j.mbs.2010.05.004
- language
- English
- LU publication?
- yes
- id
- 9e3a1e52-1fe9-47e2-8f3c-663f1b476b58 (old id 1625670)
- date added to LUP
- 2016-04-01 14:36:51
- date last changed
- 2022-01-28 01:35:59
@article{9e3a1e52-1fe9-47e2-8f3c-663f1b476b58,
abstract = {{In this paper we determine the oxygen profile in a biofilm on suspended carriers in two ways: firstly by microelectrode measurements and secondly by a simple mathematical model. The Moving Bed Biofilm Reactor is well-established for wastewater treatment where bacteria grow as a biofilm on the protective surfaces of suspended carriers. The flat shaped BiofilmChip P was developed to allow good conditions for transport of substrates into the biofilm. The oxygen profile was measured in situ the nitrifying biofilm with a microelectrode and it was simulated with a one-dimensional mathematical model. We extended the model by adding a CSTR equation, to connect the reactor to the biofilm through the boundary conditions. We showed the dependence of the thickness of the mass transfer boundary layer on the bulk flow rate. Finally, we estimated the erosion parameter lambda to increase the concordance between the measured and simulated profiles. This lead to a simple empirical relationship between lambda and the flow rate. The data gathered by in situ microelectrode measurements can, together with the mathematical model, be used in predictive modeling and give more insight in the design of new carriers, with the ambition of making process operation more energy efficient.}},
author = {{Masic, Alma and Bengtsson, Jessica and Christensson, Magnus}},
issn = {{0025-5564}},
language = {{eng}},
number = {{1}},
pages = {{1--11}},
publisher = {{Elsevier}},
series = {{Mathematical Biosciences}},
title = {{Measuring and modeling the oxygen profile in a nitrifying Moving Bed Biofilm Reactor}},
url = {{http://dx.doi.org/10.1016/j.mbs.2010.05.004}},
doi = {{10.1016/j.mbs.2010.05.004}},
volume = {{227}},
year = {{2010}},
}