2026-04-13T03:50:03Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/187252024-06-18T11:51:02Zcom_2072_452955com_2072_2054col_2072_453063

2024-06-18T11:51:02Z urn:hdl:10256/18725 Daphnia magna filtration, swimming and mortality under ammonium, nitrite, nitrate and phosphate Serra Putellas, Teresa Soler del Monte, Marçal Pous Rodríguez, Narcís Colomer, Jordi Daphnia magna Indicadors biològics ndicators (Biology) Aigües residuals -- Depuració -- Tractament biològic Sewage -- Purification -- Biological treatment Aigua -- Depuració -- Filtració Water -- Purification -- Filtration Biological methods are a promising approach to treating wastewater in order to produce water of an appropriate quality for sub-potable water purposes, thus reducing pressure on potable water sources. Daphnia magna are organisms that filter on small suspended particles and bacteria and so may be able to clarify and disinfect wastewater. However, Daphnia magna are sensitive to common chemicals and might be vulnerable to the quality of the wastewater. This study analyses the filtration, mobility and mortality rates of Daphnia magna exposed to seven days of changing concentrations of ammonium, nitrite, nitrate and phosphate. Inactivation increased with the time of exposure for both nitrite and ammonium, with a 50% inactivation in Daphnia magna filtrations after 7 days of exposure at nitrite concentrations above 6 ppm and ammonium concentrations above 40 ppm. The Daphnia filtration remained unaltered in the nitrate and phosphate concentrations. Mortality increased with nitrite and ammonium concentrations, but not with phosphate or nitrate. The swimming velocity of Daphnia magna individuals decreased when both nitrite and ammonium concentrations increased and also with phosphate concentrations above 30 ppm. However, Daphnia magna swimming velocities remained unaltered in the presence of nitrate concentrations below 100 ppm This work was supported by the University of Girona funding MPCUdG2016 and by the INNOQUA project from the European Union's Horizon 2020 research and innovation program (Ares(2016)1770486) 2024-06-18T11:51:02Z 2024-06-18T11:51:02Z info:eu-repo/date/embargoEnd/2021-03-15 2019-03-15 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion peer-reviewed http://hdl.handle.net/10256/18725 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.scitotenv.2018.11.382 info:eu-repo/semantics/altIdentifier/issn/0048-9697 info:eu-repo/semantics/altIdentifier/eissn/1879-1026 info:eu-repo/grantAgreement/EC/H2020/689817/EU/Innovative Ecological on-site Sanitation System for Water and Resource Savings/INNOQUA Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Elsevier © Science of the Total Environment, 2019, vol. 656, p. 331-337 Articles publicats (D-F)