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Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays

We exposed water samples from a recreational lake dominated by the cyanobacterium Planktothrix agardhii to different concentrations of hydrogen peroxide (H(2)O(2)). An addition of 0.33 mg·L(−1) of H(2)O(2) was the lowest effective dose for the decay of chlorophyll-a concentration to half of the orig...

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Autores principales: Bauzá, Letizia, Aguilera, Anabella, Echenique, Ricardo, Andrinolo, Darío, Giannuzzi, Leda
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4179153/
https://www.ncbi.nlm.nih.gov/pubmed/25208009
http://dx.doi.org/10.3390/toxins6092657
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author Bauzá, Letizia
Aguilera, Anabella
Echenique, Ricardo
Andrinolo, Darío
Giannuzzi, Leda
author_facet Bauzá, Letizia
Aguilera, Anabella
Echenique, Ricardo
Andrinolo, Darío
Giannuzzi, Leda
author_sort Bauzá, Letizia
collection PubMed
description We exposed water samples from a recreational lake dominated by the cyanobacterium Planktothrix agardhii to different concentrations of hydrogen peroxide (H(2)O(2)). An addition of 0.33 mg·L(−1) of H(2)O(2) was the lowest effective dose for the decay of chlorophyll-a concentration to half of the original in 14 h with light and 17 h in experiments without light. With 3.33 mg·L(−1) of H(2)O(2), the values of the chemical oxygen demand (COD) decreased to half at 36 and 126 h in experiments performed with and without light, respectively. With increasing H(2)O(2), there is a decrease in the total and faecal coliform, and this effect was made more pronounced by light. Total and faecal coliform were inhibited completely 48 h after addition of 3.33 mg·L(−1) H(2)O(2). Although the densities of cyanobacterial cells exposed to H(2)O(2) did not decrease, transmission electron microscope observation of the trichomes showed several stages of degeneration, and the cells were collapsed after 48 h of 3.33 mg·L(−1) of H(2)O(2) addition in the presence of light. Our results demonstrate that H(2)O(2) could be potentially used in hypertrophic systems because it not only collapses cyanobacterial cells and coliform bacteria but may also reduce chlorophyll-a content and chemical oxygen demand.
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spelling pubmed-41791532014-10-02 Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays Bauzá, Letizia Aguilera, Anabella Echenique, Ricardo Andrinolo, Darío Giannuzzi, Leda Toxins (Basel) Article We exposed water samples from a recreational lake dominated by the cyanobacterium Planktothrix agardhii to different concentrations of hydrogen peroxide (H(2)O(2)). An addition of 0.33 mg·L(−1) of H(2)O(2) was the lowest effective dose for the decay of chlorophyll-a concentration to half of the original in 14 h with light and 17 h in experiments without light. With 3.33 mg·L(−1) of H(2)O(2), the values of the chemical oxygen demand (COD) decreased to half at 36 and 126 h in experiments performed with and without light, respectively. With increasing H(2)O(2), there is a decrease in the total and faecal coliform, and this effect was made more pronounced by light. Total and faecal coliform were inhibited completely 48 h after addition of 3.33 mg·L(−1) H(2)O(2). Although the densities of cyanobacterial cells exposed to H(2)O(2) did not decrease, transmission electron microscope observation of the trichomes showed several stages of degeneration, and the cells were collapsed after 48 h of 3.33 mg·L(−1) of H(2)O(2) addition in the presence of light. Our results demonstrate that H(2)O(2) could be potentially used in hypertrophic systems because it not only collapses cyanobacterial cells and coliform bacteria but may also reduce chlorophyll-a content and chemical oxygen demand. MDPI 2014-09-09 /pmc/articles/PMC4179153/ /pubmed/25208009 http://dx.doi.org/10.3390/toxins6092657 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. https://creativecommons.org/licenses/by/3.0/This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/ (https://creativecommons.org/licenses/by/3.0/) ).
spellingShingle Article
Bauzá, Letizia
Aguilera, Anabella
Echenique, Ricardo
Andrinolo, Darío
Giannuzzi, Leda
Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays
title Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays
title_full Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays
title_fullStr Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays
title_full_unstemmed Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays
title_short Application of Hydrogen Peroxide to the Control of Eutrophic Lake Systems in Laboratory Assays
title_sort application of hydrogen peroxide to the control of eutrophic lake systems in laboratory assays
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4179153/
https://www.ncbi.nlm.nih.gov/pubmed/25208009
http://dx.doi.org/10.3390/toxins6092657
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