{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,28]],"date-time":"2025-11-28T17:30:02Z","timestamp":1764351002243,"version":"3.40.4"},"reference-count":29,"publisher":"IWA Publishing","issue":"8","license":[{"start":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T00:00:00Z","timestamp":1743638400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"H2020 Research and Innovation program","award":["859318"],"award-info":[{"award-number":["859318"]}]}],"content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2025,4,15]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n               <jats:p>Numerical modeling has been used extensively to simulate gas\u2013liquid transfer of sulfur dioxide, assessing how operational parameters affect absorption efficiency in packed or spray columns. Despite individual studies on these contactors, comparative analyses on the same flue gas have been rare. This study uses a numerical model for both packed and spray columns to examine how parameters influence SO2 absorption by sodium sulfite, describing packed and spray columns, is used to investigate the influence of operational parameters on SO2 absorption by sodium sulfite. The model's predictions are validated against experimental data from an industrial pilot plant. Across varying conditions (L\/G ratio, temperature, initial SO2 content or initial S(IV) concentration), the packed column achieves higher absorption efficiencies compared to the spray column, with lower assumed energy costs due to a reduced L\/G ratio. Temperature proves to be a significant factor, decreasing absorption efficiency by approximately 40% between 40 and 70 \u00b0C. SO2 absorption efficiency declines with increasing concentrations of bisulfite and sulfite ions in the absorption solution, dropping to 50% at an S(IV) concentration of 2 kmol m\u22123 in the liquid phase. Considering the objective of producing a concentrated bisulfite solution and a clean gas, a two-column system is recommended: one for bisulfite solution concentration at acidic pH and the other for gas purification enhancement at basic pH.<\/jats:p>","DOI":"10.2166\/wst.2025.049","type":"journal-article","created":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T11:41:18Z","timestamp":1743680478000},"page":"907-922","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":1,"title":["Use of a numerical model to evaluate SO2 absorption efficiency by sodium sulfite in packed and spray columns"],"prefix":"10.2166","volume":"91","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-4561-8883","authenticated-orcid":false,"given":"Rodolphe","family":"Vautherin","sequence":"first","affiliation":[{"name":"a INSA Lyon, DEEP, UR7429, Villeurbanne 69621, France"},{"name":"b SUEZ IWS, 1 Buster Keaton, Saint-Priest 69800, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4664-8975","authenticated-orcid":false,"given":"H\u00e9l\u00e8ne","family":"M\u00e9tivier","sequence":"additional","affiliation":[{"name":"a INSA Lyon, DEEP, UR7429, Villeurbanne 69621, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anne","family":"Reguer","sequence":"additional","affiliation":[{"name":"b SUEZ IWS, 1 Buster Keaton, Saint-Priest 69800, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5596-450X","authenticated-orcid":false,"given":"Hassen","family":"Benbelkacem","sequence":"additional","affiliation":[{"name":"a INSA Lyon, DEEP, UR7429, Villeurbanne 69621, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"945","published-online":{"date-parts":[[2025,4,3]]},"reference":[{"key":"key-10.2166\/wst.2025.049-1","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2007.04.024"},{"key":"key-10.2166\/wst.2025.049-2","doi-asserted-by":"publisher","DOI":"10.1016\/S0009-2509(02)00095-7"},{"key":"key-10.2166\/wst.2025.049-3","doi-asserted-by":"publisher","DOI":"10.1016\/0009-2509(95)00144-T"},{"key":"key-10.2166\/wst.2025.049-4","doi-asserted-by":"publisher","DOI":"10.1016\/j.fuel.2022.124161"},{"key":"key-10.2166\/wst.2025.049-5","doi-asserted-by":"publisher","DOI":"10.1016\/S0009-2509(03)00231-8"},{"key":"key-10.2166\/wst.2025.049-6","doi-asserted-by":"publisher","DOI":"10.1016\/j.apenergy.2010.03.023"},{"key":"key-10.2166\/wst.2025.049-7","doi-asserted-by":"crossref","DOI":"10.1201\/b17118","volume-title":"Handbook of Chemistry and Physics","author":"Haynes","year":"2014"},{"key":"key-10.2166\/wst.2025.049-8","unstructured":"IARC (1992). Sulfur dioxide and some sulfites, bisulfites and metabisulfites. In: Occupational Exposures to Mists and Vapors from Strong Inorganic Acids, and Other Industrial Chemicals. International Agency for Research on Cancer. Available at: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK424660\/ (accessed 31 May 2024)."},{"key":"key-10.2166\/wst.2025.049-9","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2023.162851"},{"key":"key-10.2166\/wst.2025.049-10","doi-asserted-by":"publisher","DOI":"10.1016\/j.jiec.2023.03.012"},{"key":"key-10.2166\/wst.2025.049-11","doi-asserted-by":"publisher","DOI":"10.1021\/ie50180a002"},{"key":"key-10.2166\/wst.2025.049-12","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2021.130033"},{"key":"key-10.2166\/wst.2025.049-13","doi-asserted-by":"publisher","DOI":"10.1016\/j.seppur.2021.119849"},{"key":"key-10.2166\/wst.2025.049-14","doi-asserted-by":"publisher","DOI":"10.1016\/j.jclepro.2021.128492"},{"key":"key-10.2166\/wst.2025.049-15","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijggc.2016.07.031"},{"key":"key-10.2166\/wst.2025.049-16","doi-asserted-by":"crossref","unstructured":"Neumann U. (1991) The Wellman Lord process. In: van Velzen, D. (ed.) Sulphur Dioxide and Nitrogen Oxides in Industrial Waste Gases: Emission, Legislation and Abatement, Eurocourses: Chemical and Environmental Science. 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