Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of pre-chlorination on Microcystis aeruginosa cell integrity and microcystins removal
High nutrient input into waterbodies increases potentially toxic cyanobacteria blooms. Pre-chlorination treatment is excellent for cyanobacterial cell inactivation and dissolved cyanotoxins removal in water supply sources. This study aims to evaluate the pre-chlorination effect treatment on Microcystis aeruginosa cell integrity and its hepatotoxins (microcystins, MC) release and degradation on a laboratory scale. Loss of cell integrity is observed with increasing chlorine concentration. The maximum cell permeability without cell disintegration occurs at 2.5 mg Cl2 L−1. Degradations up to 70% and chlorophyll-a reductions over 70% are observed after 60 min exposure, with complete degradation at 2.5 and 3 mg Cl2 L−1. However, chlorine (Cl2) exposure over 40.66 mg min L−1 is required for microcystins MC-LR (i.e. radicals: leucine (L) and arginine (R)) and MC-RR (i.e. radicals: arginine and arginine) oxidation oxidation to concentrations below the legislation value for water potability.
Effect of pre-chlorination on Microcystis aeruginosa cell integrity and microcystins removal
High nutrient input into waterbodies increases potentially toxic cyanobacteria blooms. Pre-chlorination treatment is excellent for cyanobacterial cell inactivation and dissolved cyanotoxins removal in water supply sources. This study aims to evaluate the pre-chlorination effect treatment on Microcystis aeruginosa cell integrity and its hepatotoxins (microcystins, MC) release and degradation on a laboratory scale. Loss of cell integrity is observed with increasing chlorine concentration. The maximum cell permeability without cell disintegration occurs at 2.5 mg Cl2 L−1. Degradations up to 70% and chlorophyll-a reductions over 70% are observed after 60 min exposure, with complete degradation at 2.5 and 3 mg Cl2 L−1. However, chlorine (Cl2) exposure over 40.66 mg min L−1 is required for microcystins MC-LR (i.e. radicals: leucine (L) and arginine (R)) and MC-RR (i.e. radicals: arginine and arginine) oxidation oxidation to concentrations below the legislation value for water potability.
Effect of pre-chlorination on Microcystis aeruginosa cell integrity and microcystins removal
Ossanes de Souza, Alexander (Autor:in) / Kinoshita Teramoto, Kazumi (Autor:in) / Nunes de Freitas, Paloma Nathane (Autor:in) / Costa de Almeida, Éryka (Autor:in) / Seckler Ferreira Filho, Sidney (Autor:in) / Pinto, Ernani (Autor:in)
Urban Water Journal ; 20 ; 968-978
14.09.2023
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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