Oxidation of Microcystin-LR by Ferrate(VI): Kinetics, Degradation Pathways, and Toxicity Assessments

0437711 - BÚ 2015 RIV US eng J - Journal Article
Jiang, W. - Chen, L. - Batchu, S. R. - Gardinali, P. R. - Jaša, Libor - Maršálek, Blahoslav - Zbořil, R. - Dionysiou, D. D. - O'Shea, K. E. - Sharma, V. K.
Oxidation of Microcystin-LR by Ferrate(VI): Kinetics, Degradation Pathways, and Toxicity Assessments.
Environmental Science and Technology. Roč. 48, č. 20 (2014), s. 12164-12172. ISSN 0013-936X. E-ISSN 1520-5851
Institutional support: RVO:67985939
Keywords : microcystin * degradation * ferrate
Subject RIV: EF - Botanics
Impact factor: 5.330, year: 2014

This study report kinetics of the reactivity of ferrate(VI) with MC-LR and model compounds (sorbic acid, sorbic alcohol, and glycine anhydride) over a range of solution pH. The specific rate constants for the individual ferrate species were determined and compared with a number of common chemical oxidants employed for water treatment. Products studies also indicate fragmentation of the cyclic MC-LR structure occurs under the reaction conditions. The analysis of protein phosphatase (PP1) activity suggested that the degradation byproducts of MC-LR did not possess significant biological toxicity Fe(VI) was effective for the degradation MC-LR in water containing carbonate ions and fulvic acid (FA) and in lake water samples, but higher Fe(VI) dosages would be needed to completely remove MC-LR in lake water compared to deionized water.
Permanent Link: http://hdl.handle.net/11104/0241221