Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay

Toxicity of a Cr(VI) solution before and after treatment by TiO2 heterogeneous photocatalysis (HP) was performed with AMPHITOX bioassay. Changes in toxicity on Rhinella arenarum larvae for 10-d were monitored after exposure to an untreated Cr(VI) solution and to the same solution after HP treatment....

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Autores principales: Hojman, Jonatan Y., Meichtry, Jorge Martin, Litter, Marta Irene, Perez Coll, Cristina Silvia
Formato: publishedVersion Artículo
Lenguaje:Inglés
Publicado: Elsevier Science 2015
Materias:
HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
AMPHITOX TEST
CIENCIAS QUÍMICAS
CIENCIAS NATURALES Y EXACTAS
Acceso en línea:https://ri.unsam.edu.ar/handle/123456789/1005
Aporte de:
Repositorio Institucional de la UNSAM de Universidad Nacional de General San Martín
id I78-R216-123456789-1005
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spelling I78-R216-123456789-10052023-03-27T20:47:42Z Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay Hojman, Jonatan Y. Meichtry, Jorge Martin Litter, Marta Irene Perez Coll, Cristina Silvia HETEROGENEOUS PHOTOCATALYSIS HEXAVALENT CHROMIUM AMPHITOX TEST CIENCIAS QUÍMICAS CIENCIAS NATURALES Y EXACTAS info:eu-repo/semantics/publishedVersion Toxicity of a Cr(VI) solution before and after treatment by TiO2 heterogeneous photocatalysis (HP) was performed with AMPHITOX bioassay. Changes in toxicity on Rhinella arenarum larvae for 10-d were monitored after exposure to an untreated Cr(VI) solution and to the same solution after HP treatment. The HP treatment of a 41.60 mg L−1 Cr(VI) solution reduced to 37.5% the concentration of the metal ion. A 10-fold reduction in toxicity at acute exposure (72 h) and 150-fold reduction in toxicity after 240 h was found. Further, the LOEC value increased from 0.001% for the untreated solution to 0.153% after HP treatment. Moreover, the safe concentration in untreated solution corresponded to 0.0001% sample, and it was 0.01% after the treatment, i.e., 100 times higher. A saving of water of about 100,000 L per L of effluent would be possible through dilution to allow safer concentrations for discharge; the saving would reach the highest value (1,000,000 L per L) at 240 h. Sub-lethal effects were completely absent in larvae exposed to the treated solution. The AMPHITOX test allowed to detect chronic effects at low Cr concentrations, i.e. at environmentally relevant levels. Fil: Hojman, Jonatan Y.. Universidad Nacional de San Martín; Argentina Fil: Meichtry, Jorge Martín. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Fil: Litter, Marta Irene. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina Fil: Perez Coll, Cristina Silvia. Universidad Nacional de San Martín; Argentina 2015-09 info:eu-repo/semantics/article info:ar-repo/semantics/artículo Hojman, J. Y. et al (sep 2015) Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay. En: Ecotoxicology and Environmental Safety; Elsevier Science. 122, 545-550 0147-6513 https://ri.unsam.edu.ar/handle/123456789/1005 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Creative Commons Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5) application/pdf pp. 545-550 application/pdf Elsevier Science Ecotoxicology and Environmental Safety. 2015 122(9): 545-550. Elsevier http://dx.doi.org/10.1016/j.ecoenv.2015.09.036
institution Universidad Nacional de General San Martín
institution_str I-78
repository_str R-216
collection Repositorio Institucional de la UNSAM
language Inglés
topic HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
AMPHITOX TEST
CIENCIAS QUÍMICAS
CIENCIAS NATURALES Y EXACTAS
spellingShingle HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
AMPHITOX TEST
CIENCIAS QUÍMICAS
CIENCIAS NATURALES Y EXACTAS
Hojman, Jonatan Y.
Meichtry, Jorge Martin
Litter, Marta Irene
Perez Coll, Cristina Silvia
Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay
topic_facet HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
AMPHITOX TEST
CIENCIAS QUÍMICAS
CIENCIAS NATURALES Y EXACTAS
description Toxicity of a Cr(VI) solution before and after treatment by TiO2 heterogeneous photocatalysis (HP) was performed with AMPHITOX bioassay. Changes in toxicity on Rhinella arenarum larvae for 10-d were monitored after exposure to an untreated Cr(VI) solution and to the same solution after HP treatment. The HP treatment of a 41.60 mg L−1 Cr(VI) solution reduced to 37.5% the concentration of the metal ion. A 10-fold reduction in toxicity at acute exposure (72 h) and 150-fold reduction in toxicity after 240 h was found. Further, the LOEC value increased from 0.001% for the untreated solution to 0.153% after HP treatment. Moreover, the safe concentration in untreated solution corresponded to 0.0001% sample, and it was 0.01% after the treatment, i.e., 100 times higher. A saving of water of about 100,000 L per L of effluent would be possible through dilution to allow safer concentrations for discharge; the saving would reach the highest value (1,000,000 L per L) at 240 h. Sub-lethal effects were completely absent in larvae exposed to the treated solution. The AMPHITOX test allowed to detect chronic effects at low Cr concentrations, i.e. at environmentally relevant levels.
format publishedVersion
Artículo
Artículo
author Hojman, Jonatan Y.
Meichtry, Jorge Martin
Litter, Marta Irene
Perez Coll, Cristina Silvia
author_facet Hojman, Jonatan Y.
Meichtry, Jorge Martin
Litter, Marta Irene
Perez Coll, Cristina Silvia
author_sort Hojman, Jonatan Y.
title Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay
title_short Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay
title_full Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay
title_fullStr Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay
title_full_unstemmed Abatement of toxicity of effluents containing Cr(VI) by heterogeneous photocatalysis. Toxicity assessment by AMPHITOX assay
title_sort abatement of toxicity of effluents containing cr(vi) by heterogeneous photocatalysis. toxicity assessment by amphitox assay
publisher Elsevier Science
publishDate 2015
url https://ri.unsam.edu.ar/handle/123456789/1005
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