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Modelling gas-liquid mass transfer in wastewater treatment : when current knowledge needs to encounter engineering practice and vice versa

Amaral, Andreia ; Gillot, Sylvie ; Garrido-Baserba, Manel ; Filali, Ahlem ; Karpinska, Anna M. ; Plósz, Benedek G. ; De Groot, Christopher ; Bellandi, Giacomo ; Nopens, Ingmar and Takács, Imre , et al. (2019) In Water science and technology : a journal of the International Association on Water Pollution Research 80(4). p.607-619
Abstract

Gas-liquid mass transfer in wastewater treatment processes has received considerable attention over the last decades from both academia and industry. Indeed, improvements in modelling gas-liquid mass transfer can bring huge benefits in terms of reaction rates, plant energy expenditure, acid-base equilibria and greenhouse gas emissions. Despite these efforts, there is still no universally valid correlation between the design and operating parameters of a wastewater treatment plant and the gas-liquid mass transfer coefficients. That is why the current practice for oxygen mass transfer modelling is to apply overly simplified models, which come with multiple assumptions that are not valid for most applications. To deal with these... (More)

Gas-liquid mass transfer in wastewater treatment processes has received considerable attention over the last decades from both academia and industry. Indeed, improvements in modelling gas-liquid mass transfer can bring huge benefits in terms of reaction rates, plant energy expenditure, acid-base equilibria and greenhouse gas emissions. Despite these efforts, there is still no universally valid correlation between the design and operating parameters of a wastewater treatment plant and the gas-liquid mass transfer coefficients. That is why the current practice for oxygen mass transfer modelling is to apply overly simplified models, which come with multiple assumptions that are not valid for most applications. To deal with these complexities, correction factors were introduced over time. The most uncertain of them is the α-factor. To build fundamental gas-liquid mass transfer knowledge more advanced modelling paradigms have been applied more recently. Yet these come with a high level of complexity making them impractical for rapid process design and optimisation in an industrial setting. However, the knowledge gained from these more advanced models can help in improving the way the α-factor and thus gas-liquid mass transfer coefficient should be applied. That is why the presented work aims at clarifying the current state-of-the-art in gas-liquid mass transfer modelling of oxygen and other gases, but also to direct academic research efforts towards the needs of the industrial practitioners.

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published
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Water science and technology : a journal of the International Association on Water Pollution Research
volume
80
issue
4
pages
13 pages
publisher
IWA Publishing
external identifiers
  • scopus:85074272029
  • pmid:31661440
ISSN
0273-1223
DOI
10.2166/wst.2019.253
language
English
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yes
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16e99737-e738-46f3-bcb4-a8ce4b225e66
date added to LUP
2019-11-19 16:22:32
date last changed
2020-03-29 07:47:31
@article{16e99737-e738-46f3-bcb4-a8ce4b225e66,
  abstract     = {<p>Gas-liquid mass transfer in wastewater treatment processes has received considerable attention over the last decades from both academia and industry. Indeed, improvements in modelling gas-liquid mass transfer can bring huge benefits in terms of reaction rates, plant energy expenditure, acid-base equilibria and greenhouse gas emissions. Despite these efforts, there is still no universally valid correlation between the design and operating parameters of a wastewater treatment plant and the gas-liquid mass transfer coefficients. That is why the current practice for oxygen mass transfer modelling is to apply overly simplified models, which come with multiple assumptions that are not valid for most applications. To deal with these complexities, correction factors were introduced over time. The most uncertain of them is the α-factor. To build fundamental gas-liquid mass transfer knowledge more advanced modelling paradigms have been applied more recently. Yet these come with a high level of complexity making them impractical for rapid process design and optimisation in an industrial setting. However, the knowledge gained from these more advanced models can help in improving the way the α-factor and thus gas-liquid mass transfer coefficient should be applied. That is why the presented work aims at clarifying the current state-of-the-art in gas-liquid mass transfer modelling of oxygen and other gases, but also to direct academic research efforts towards the needs of the industrial practitioners.</p>},
  author       = {Amaral, Andreia and Gillot, Sylvie and Garrido-Baserba, Manel and Filali, Ahlem and Karpinska, Anna M. and Plósz, Benedek G. and De Groot, Christopher and Bellandi, Giacomo and Nopens, Ingmar and Takács, Imre and Lizarralde, Izaro and Jimenez, Jose A. and Fiat, Justine and Rieger, Leiv and Arnell, Magnus and Andersen, Mikkel and Jeppsson, Ulf and Rehman, Usman and Fayolle, Yannick and Amerlinck, Youri and Rosso, Diego},
  issn         = {0273-1223},
  language     = {eng},
  month        = {08},
  number       = {4},
  pages        = {607--619},
  publisher    = {IWA Publishing},
  series       = {Water science and technology : a journal of the International Association on Water Pollution Research},
  title        = {Modelling gas-liquid mass transfer in wastewater treatment : when current knowledge needs to encounter engineering practice and vice versa},
  url          = {http://dx.doi.org/10.2166/wst.2019.253},
  doi          = {10.2166/wst.2019.253},
  volume       = {80},
  year         = {2019},
}