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Using the open-source software OpenFOAM, we extended three-dimensional two-phase flow solvers with a rotating mesh feature to model the mass transfer processes between the water and air phases. The accuracy of these simulations was validated against experimental data, demonstrating a strong agreement in the mass transfer rates of H2S and O2. The investigation highlights the impact of turbulence on mass transfer coefficients, confirming the reliability of the solvers for predicting mass transfer in turbulent conditions. The results suggest that these CFD models can serve as effective tools for understanding and optimizing sewer system designs. Additionally, the study highlights the potential of numerical simulations to reduce the need for extensive and potentially hazardous laboratory experiments.<\/jats:p>","DOI":"10.2166\/wst.2024.406","type":"journal-article","created":{"date-parts":[[2024,12,26]],"date-time":"2024-12-26T16:43:01Z","timestamp":1735231381000},"page":"69-82","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":1,"title":["CFD simulation of turbulent mass transfer of H2S and O2 in a stirring tank"],"prefix":"10.2166","volume":"91","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8959-8808","authenticated-orcid":false,"given":"Katharina","family":"Teuber","sequence":"first","affiliation":[{"name":"a Department of Civil Engineering, Geoinformation and Health Technology, Jade University of Applied Sciences, Ofener Str. 16\/19, Oldenburg 26121, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6417-9554","authenticated-orcid":false,"given":"Abhinav","family":"Dixit","sequence":"additional","affiliation":[{"name":"b Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universit\u00e4t Berlin, Gustav-Meyer-Allee 25, Berlin 13355, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1088-2321","authenticated-orcid":false,"given":"Reinhard","family":"Hinkelmann","sequence":"additional","affiliation":[{"name":"b Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universit\u00e4t Berlin, Gustav-Meyer-Allee 25, Berlin 13355, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"945","published-online":{"date-parts":[[2024,12,26]]},"reference":[{"key":"key-10.2166\/wst.2024.406-1","unstructured":"Berger C., Falk C., Hetzel F., Pinnekamp J., Ruppelt J., Schleiffer P. & Schmitt J. (2020) Zustand der Kanalisation in Deutschland \u2013 Ergebnisse der DWA-Umfrage 2020 (Status of the Sewer Network in Germany \u2013 Results from the DWA Survey 2020). KA Korrespondenz Abwasser, Abfall, 939\u2013953. https:\/\/doi.org\/10.3242\/kae2020.12.001."},{"key":"key-10.2166\/wst.2024.406-2","doi-asserted-by":"publisher","DOI":"10.2166\/wst.2017.070"},{"key":"key-10.2166\/wst.2024.406-3","unstructured":"Dixit A. (2024) Extension and Further Validation of A 3D Two-Phase Flow Model for Flow, Transport and Mass Transfer in Sewer Systems. PhD thesis. TU Berlin, Berlin, Germany. https:\/\/doi.org\/10.14279\/depositonce-19857 (Accessed: 27 August 2024)."},{"key":"key-10.2166\/wst.2024.406-4","doi-asserted-by":"publisher","DOI":"10.1061\/(ASCE)0733-9429(2006)132:8(791)"},{"key":"key-10.2166\/wst.2024.406-5","doi-asserted-by":"publisher","DOI":"10.1016\/j.ces.2009.07.018"},{"key":"key-10.2166\/wst.2024.406-6","doi-asserted-by":"publisher","DOI":"10.1016\/j.ces.2010.01.012"},{"key":"key-10.2166\/wst.2024.406-7","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9991(81)90145-5"},{"key":"key-10.2166\/wst.2024.406-8","doi-asserted-by":"crossref","DOI":"10.1201\/b14666","volume-title":"Sewer Processes: Microbial and Chemical Process Engineering of Sewer Networks","author":"Hvitved-Jacobsen","year":"2013","edition":"2"},{"key":"key-10.2166\/wst.2024.406-9","doi-asserted-by":"publisher","DOI":"10.1016\/j.jher.2018.07.002"},{"key":"key-10.2166\/wst.2024.406-10","doi-asserted-by":"publisher","DOI":"10.2166\/wst.2017.430"},{"key":"key-10.2166\/wst.2024.406-11","doi-asserted-by":"publisher","DOI":"10.2175\/106143017X15131012152816"},{"key":"key-10.2166\/wst.2024.406-12","doi-asserted-by":"publisher","DOI":"10.1021\/acs.iecr.5b00480"},{"key":"key-10.2166\/wst.2024.406-13","article-title":"International Conference on Urban Water Interfaces (UWI)","volume-title":"First","author":"Pacheco Fern\u00e1ndez","year":"2020"},{"key":"key-10.2166\/wst.2024.406-14","unstructured":"Rusche H. (2003) Computational Fluid Dynamics of Dispersed Two-Phase Flows at High Phase Fractions. PhD thesis. University of London, London, UK."},{"key":"key-10.2166\/wst.2024.406-15","doi-asserted-by":"publisher","DOI":"10.5194\/acp-15-4399-2015"},{"key":"key-10.2166\/wst.2024.406-16","unstructured":"Severin T. S. (2017) Computational Fluid Dynamics Assisted Design of Thin-Layer Cascade Photobioreactor Components. PhD thesis. Technische Universit\u00e4t M\u00fcnchen, Munich, Germany. Available at: https:\/\/mediatum.ub.tum.de\/?id=1363208 (Accessed: 27 August 2024)."},{"key":"key-10.2166\/wst.2024.406-17","doi-asserted-by":"crossref","first-page":"1401","DOI":"10.1007\/978-981-287-092-6_47","article-title":"Multiphase phenomena and design of gas\u2013liquid stirred tanks","volume-title":"Handbook of Multiphase Flow Science and Technology","author":"Shewale","year":"2023"},{"key":"key-10.2166\/wst.2024.406-18","doi-asserted-by":"publisher","DOI":"10.1002\/cjce.23704"},{"key":"key-10.2166\/wst.2024.406-19","doi-asserted-by":"publisher","DOI":"10.1061\/JOEEDU.EEENG-7150"},{"key":"key-10.2166\/wst.2024.406-20","doi-asserted-by":"publisher","DOI":"10.1061\/JOEEDU.EEENG-7599"},{"key":"key-10.2166\/wst.2024.406-21","unstructured":"Tang S. (2019) Determination of the Oxygen and Hydrogen Sulfide Mass Transfer Across the Liquid-gas Interface Under Turbulent Conditions \u2013 A Reactor set-up. Bachelor thesis. 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