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 (H2O2). An addition of 0.33 mg·L-1 of H2O2 was the lowest effective dose for the decay of chlorophyll-a concentration to half of the original in 14...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Bauzá, Letizia, Aguilera, Anabella, Echenique, Ricardo Omar, Andrinolo, Darío, Giannuzzi, Leda
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Biología
Cyanobacteria
Coliforms
Chemical oxygen demand
Hydrogen peroxide
Lake management
Planktothrix agardhii
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84851
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84851
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Biología
Cyanobacteria
Coliforms
Chemical oxygen demand
Hydrogen peroxide
Lake management
Planktothrix agardhii
spellingShingle Biología
Cyanobacteria
Coliforms
Chemical oxygen demand
Hydrogen peroxide
Lake management
Planktothrix agardhii
Bauzá, Letizia
Aguilera, Anabella
Echenique, Ricardo Omar
Andrinolo, Darío
Giannuzzi, Leda
Application of hydrogen peroxide to the control of eutrophic lake systems in laboratory assays
topic_facet Biología
Cyanobacteria
Coliforms
Chemical oxygen demand
Hydrogen peroxide
Lake management
Planktothrix agardhii
description We exposed water samples from a recreational lake dominated by the cyanobacterium Planktothrix agardhii to different concentrations of hydrogen peroxide (H2O2). An addition of 0.33 mg·L-1 of H2O2 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 H2O2, 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 H2O2, 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 H2O2. Although the densities of cyanobacterial cells exposed to H2O2 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 H2O2 addition in the presence of light. Our results demonstrate that H2O2 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.
format Articulo
Articulo
author Bauzá, Letizia
Aguilera, Anabella
Echenique, Ricardo Omar
Andrinolo, Darío
Giannuzzi, Leda
author_facet Bauzá, Letizia
Aguilera, Anabella
Echenique, Ricardo Omar
Andrinolo, Darío
Giannuzzi, Leda
author_sort Bauzá, Letizia
title 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_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_sort application of hydrogen peroxide to the control of eutrophic lake systems in laboratory assays
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/84851
work_keys_str_mv AT bauzaletizia applicationofhydrogenperoxidetothecontrolofeutrophiclakesystemsinlaboratoryassays
AT aguileraanabella applicationofhydrogenperoxidetothecontrolofeutrophiclakesystemsinlaboratoryassays
AT echeniquericardoomar applicationofhydrogenperoxidetothecontrolofeutrophiclakesystemsinlaboratoryassays
AT andrinolodario applicationofhydrogenperoxidetothecontrolofeutrophiclakesystemsinlaboratoryassays
AT giannuzzileda applicationofhydrogenperoxidetothecontrolofeutrophiclakesystemsinlaboratoryassays
bdutipo_str Repositorios
_version_ 1764820488644722688

Ejemplares similares