Modelling competitive adsorption of organic micropollutants onto powdered activated carbon in continuous stirred tank reactors for advanced wastewater treatment.

Autor: Parniske J; University of Kassel, Department of Urban Water Engineering, Kurt-Wolters-Street 3, 34125 Kassel, Germany., Atallah Al-Asad H; University of Kassel, Department of Urban Water Engineering, Kurt-Wolters-Street 3, 34125 Kassel, Germany., Qian J; University of Kassel, Department of Urban Water Engineering, Kurt-Wolters-Street 3, 34125 Kassel, Germany., Morck T; University of Kassel, Department of Urban Water Engineering, Kurt-Wolters-Street 3, 34125 Kassel, Germany. Electronic address: morck@uni-kassel.de.
Jazyk: angličtina
Zdroj: Water research [Water Res] 2024 Jul 01; Vol. 258, pp. 121806. Date of Electronic Publication: 2024 May 21.
DOI: 10.1016/j.watres.2024.121806
Abstrakt: This work investigates the validation and application of a competitive model approach for full-scale wastewater treatment plants (WWTP) with external recirculation of partially loaded powdered activated carbon (PAC) for removal of organic micropollutants (OMP). It is based on the ideal adsorbed solution theory (IAST) for multisolute mixtures combined with calibration of fictive organic components and correction of single-solute model parameters for OMP by use of the tracer model (TRM). Adsorption kinetics are represented by a pseudo first order reaction (PFO) and compared to mass transfer calculated with the homogenous surface diffusion model (HSDM). Model validation with operational data from two different WWTPs showed a strong dependency of model results on the batch sample quality used for model calibration. In contrast, the kinetic approach is of less importance for predicting full-scale OMP removal with long PAC sludge retention times. Further model application demonstrated that external PAC recirculation significantly improves the OMP removal with regard to both adsorption capacity and compensation of competitive effects of Dissolved Organic Carbon (DOC).
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Janna Parniske, Hana Atallah Al-asad, Jueying Qian reports financial support was provided by Federal Ministry of Education and Research Bonn Office Library. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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