{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T05:22:06Z","timestamp":1772083326500,"version":"3.50.1"},"reference-count":23,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2020,10,9]],"date-time":"2020-10-09T00:00:00Z","timestamp":1602201600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Processes"],"abstract":"<jats:p>Reed-Phragmites australis (Cav.) Trin. ex Steud, an aquatic plant, commonly used in constructed wetlands for wastewater treatment, supplies oxygen into the subsurface environment. Reed may be used as a \u2018green machine\u2019 in the form of a floating vegetation cover with many applications: wastewater lagoons, manure lagoons or sewage sludge lagoons. An important measure of the performance of the plant system is the oxygen transfer capacity (OTC). Accurate prediction of the OTC in relation to reed biomass would be crucial in modelling its influence on organic matter degradation and ammonia\u2013nitrogen oxygenation in such lagoons. Laboratory experiments aiming to determine OTC and its dependence on reed biomass were carried out. Eight plants with a total dry mass ranging from approximately 3 to 7 g were tested. Mean OTC was determined per plant: 0.18 \u00b1 0.21 (g O2\u00b7m\u22123\u00b7h\u22121\u00b7plant\u22121), with respect to leaves-and-stem dry mass (dlsm): 44.91 \u00b1 35.21 (g O2\u00b7m\u22123\u00b7h\u22121\u00b7g dlsm\u22121), and to total dry mass (dtm): 33.25 \u00b1 27.97 (g O2\u00b7m\u22123\u00b7h\u22121\u00b7g dtm\u22121). In relation to the relatively small root dry mass (drm), the OTC value was 136.02 \u00b1 147.19 (g O2\u00b7m\u22123\u00b7h\u22121\u00b7g drm\u22121). Measured OTC values varied widely between the individual plants (variation coefficient 115%), in accordance with their differing size. Oxygenation performance was greatest in the reed plants with larger above ground dry mass (&gt;4 g dlsm), but no influence of the root dry mass on the OTC rate was found.<\/jats:p>","DOI":"10.3390\/pr8101270","type":"journal-article","created":{"date-parts":[[2020,10,17]],"date-time":"2020-10-17T07:23:22Z","timestamp":1602919402000},"page":"1270","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Oxygen Transfer Capacity as a Measure of Water Aeration by Floating Reed Plants: Initial Laboratory Studies"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7099-0685","authenticated-orcid":false,"given":"Antonio","family":"Albuquerque","sequence":"first","affiliation":[{"name":"Department of Civil Engineering and Architecture and FibEnTech, University of Beira Interior, Edificio 2 das Engenharias, Calcada Fonte do Lameiro, 6201-001 Covilha, Portugal"}]},{"given":"Peter","family":"Randerson","sequence":"additional","affiliation":[{"name":"School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5871-2129","authenticated-orcid":false,"given":"Andrzej","family":"Bia\u0142owiec","sequence":"additional","affiliation":[{"name":"Institute of Agricultural Engineering, Faculty of Life Sciences and Technology, Wroclaw University of Environmental and Life Sciences, 37a Che\u0142mo\u0144skiego Str., 51-630 Wroclaw, Poland"}]}],"member":"1968","published-online":{"date-parts":[[2020,10,9]]},"reference":[{"key":"ref_1","unstructured":"EPA-United States Environmental Protection Agency (2020, October 06). 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