{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T17:27:27Z","timestamp":1762018047144},"reference-count":29,"publisher":"IWA Publishing","issue":"6","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2017,9,27]]},"abstract":"<jats:p>Over the last decades, considerable progress has been made in the understanding of the sulfur cycle in sewer systems. In spite of a wealth of experimental and field studies that have addressed the release of hydrogen sulfide from free surface flows in gravity sewers and the corresponding air-water mass transfer, little is known about hydrogen sulfide emission under highly turbulent conditions (e.g., drop structures, hydraulic jumps). In this study, experimental work was carried out to analyze the influence of characteristics of drops on reaeration. Physical models were built, mimicking typical sewer drop structures and allowing different types of drops, drop heights, tailwater depths and flow rates. In total, 125 tests were performed. Based on their results, empirical expressions translating the relationship between the mass transfer of oxygen and physical parameters of drop structures were established. Then, by applying the two-film theory with two-reference substances, the relation to hydrogen sulfide release was defined. The experiments confirmed that the choice of the type of drop structure is critical to determine the uptake\/emission rates. By quantifying the air-water mass transfer rates between free-fall and backdrop types of drop, the latter resulted in considerably lower oxygen uptake rates.<\/jats:p>","DOI":"10.2166\/wst.2017.430","type":"journal-article","created":{"date-parts":[[2017,7,20]],"date-time":"2017-07-20T00:20:14Z","timestamp":1500510014000},"page":"1584-1594","update-policy":"http:\/\/dx.doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":4,"title":["Erratum: Water Science and Technology 75 (10), 2257\u20132267: Liquid-gas mass transfer at drop structures, Nat\u00e9rcia Matias, Asbj\u00f8rn Haaning Nielsen, Jes Vollertsen, Filipa Ferreira and Jos\u00e9 Saldanha Matos, doi: 10.2166\/wst.2017.103"],"prefix":"10.2166","volume":"76","author":[{"given":"Nat\u00e9rcia","family":"Matias","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, Architecture and Georesources (DECivil) & Civil Engineering Research and Innovation for Sustainability (CERIS), Instituto Superior T\u00e9cnico (IST), University of Lisbon, Avenida Rovisco Pais, Lisbon 1049-001, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Asbj\u00e8rn Haaning","family":"Nielsen","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, Aalborg University, Sofiendalsvej 11, Aalborg DK-9200, SV, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jes","family":"Vollertsen","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, Aalborg University, Sofiendalsvej 11, Aalborg DK-9200, SV, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Filipa","family":"Ferreira","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, Architecture and Georesources (DECivil) & Civil Engineering Research and Innovation for Sustainability (CERIS), Instituto Superior T\u00e9cnico (IST), University of Lisbon, Avenida Rovisco Pais, Lisbon 1049-001, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Saldanha","family":"Matos","sequence":"first","affiliation":[{"name":"Department of Civil Engineering, Architecture and Georesources (DECivil) & Civil Engineering Research and Innovation for Sustainability (CERIS), Instituto Superior T\u00e9cnico (IST), University of Lisbon, Avenida Rovisco Pais, Lisbon 1049-001, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"945","published-online":{"date-parts":[[2017,2,27]]},"reference":[{"key":"2020032810441262600_WST-ER10C1","volume-title":"Sulfide in Wastewater Collection and Treatment Systems","author":"American Society of Civil Engineers (ASCE)","year":"1989"},{"issue":"3","key":"2020032810441262600_WST-ER10C2","doi-asserted-by":"crossref","first-page":"555","DOI":"10.1061\/(ASCE)0733-9372(1983)109:3(555)","article-title":"Small stream channel dam aeration characteristics","volume":"109","author":"Butts","year":"1983","journal-title":"Journal of Environmental Engineering"},{"issue":"6","key":"2020032810441262600_WST-ER10C3","doi-asserted-by":"crossref","first-page":"1460","DOI":"10.1021\/ie50498a055","article-title":"Significance of liquid-film coefficients in gas absorption","volume":"43","author":"Danckwerts","year":"1951","journal-title":"Industrial & Engineering Chemistry"},{"issue":"5","key":"2020032810441262600_WST-ER10C4","first-page":"477","article-title":"Weirs and the aeration of rivers","volume":"11","author":"Gameson","year":"1957","journal-title":"Journal of the Institution of Water Engineers"},{"key":"2020032810441262600_WST-ER10C5","author":"Hansen","year":"2010"},{"key":"2020032810441262600_WST-ER10C6","first-page":"365","article-title":"The rate of absorption of a pure gas into still liquid during short periods of exposure","volume":"31","author":"Higbie","year":"1935","journal-title":"Transactions of the American 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Metall. Eng."},{"key":"2020032810441262600_WST-ER10C25","unstructured":"Yongsiri\n              C.\n            \n          \n          2004\n          Emission and Fate of Hydrogen Sulfide in Sewer Networks. PhD Thesis, Aalborg University, Aalborg, Denmark."},{"issue":"4","key":"2020032810441262600_WST-ER10C26","doi-asserted-by":"crossref","first-page":"85","DOI":"10.2166\/wst.2003.0227","article-title":"Introducing the emission process of hydrogen sulfide to a sewer process model (WATS)","volume":"47","author":"Yongsiri","year":"2003","journal-title":"Water Science & Technology"},{"issue":"1","key":"2020032810441262600_WST-ER10C27","doi-asserted-by":"crossref","first-page":"104","DOI":"10.1061\/(ASCE)0733-9372(2004)130:1(104)","article-title":"Effect of temperature on air-water transfer of hydrogen sulfide","volume":"130","author":"Yongsiri","year":"2004","journal-title":"Journal of Environmental Engineering"},{"issue":"4","key":"2020032810441262600_WST-ER10C28","doi-asserted-by":"crossref","first-page":"161","DOI":"10.2166\/wst.2004.0251","article-title":"Hydrogen sulfide emission in sewer networks: a two-phase modeling approach to the sulfur cycle","volume":"50","author":"Yongsiri","year":"2004","journal-title":"Water Science & Technology"}],"container-title":["Water Science and Technology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/iwaponline.com\/wst\/article-pdf\/76\/6\/1584\/449652\/wst076061584.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/iwaponline.com\/wst\/article-pdf\/76\/6\/1584\/449652\/wst076061584.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,3,28]],"date-time":"2020-03-28T14:45:20Z","timestamp":1585406720000},"score":1,"resource":{"primary":{"URL":"https:\/\/iwaponline.com\/wst\/article\/76\/6\/1584\/30974\/Erratum-Water-Science-and-Technology-75-10"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,2,27]]},"references-count":29,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2017,2,27]]},"published-print":{"date-parts":[[2017,9,27]]}},"URL":"https:\/\/doi.org\/10.2166\/wst.2017.430","relation":{},"ISSN":["0273-1223","1996-9732"],"issn-type":[{"value":"0273-1223","type":"print"},{"value":"1996-9732","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2017,9,27]]},"published":{"date-parts":[[2017,2,27]]}}}