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Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment
The water quality of the Antas reservoir, under the influence of treated effluents from a uranium mining area Ore Treatment Unit (UTM) with acid mine drainage, was investigated. Samples were collected every 3 months from the Antas reservoir (CAB, P41-E and P14) and from the UTM (P41-S). Chemical and...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5655341/ https://www.ncbi.nlm.nih.gov/pubmed/29066833 http://dx.doi.org/10.1038/s41598-017-14100-w |
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author | Ferrari, Carla Rolim do Nascimento, Heliana de Azevedo Franco Rodgher, Suzelei Almeida, Tito Bruschi, Armando Luiz Nascimento, Marcos Roberto Lopes do Bonifácio, Rodrigo Leandro |
author_facet | Ferrari, Carla Rolim do Nascimento, Heliana de Azevedo Franco Rodgher, Suzelei Almeida, Tito Bruschi, Armando Luiz Nascimento, Marcos Roberto Lopes do Bonifácio, Rodrigo Leandro |
author_sort | Ferrari, Carla Rolim |
collection | PubMed |
description | The water quality of the Antas reservoir, under the influence of treated effluents from a uranium mining area Ore Treatment Unit (UTM) with acid mine drainage, was investigated. Samples were collected every 3 months from the Antas reservoir (CAB, P41-E and P14) and from the UTM (P41-S). Chemical and acute 48 h toxicity tests using Ceriodaphnia silvestrii and Daphnia magna analyses were carried out to determine the potential environmental risks due to discharging the uranium mine effluents into this reservoir. All the water samples taken from the treated effluent (P41-S) were positively correlated with elevated concentrations of uranium, manganese, aluminum, zinc and fluoride and with high electrical conductivity and pH values, being considered toxic. In November 2014 water samples taken from the reservoir showed chemical concentrations above the legislation limits for fluoride (4.5 mg L(−1)) uranium (0.082 mg L(−1)), sulfate (662.4 mg L(−1)), manganese (1.125 mg L(−1)) and aluminum (1.55 mg L(−1)), and in July 2015 for fluoride (2.55 mg L(−1)), uranium (0.01 mg L(−1)) and manganese (0.36 mg L(−1)). The extremely high average value for hardness (543.55 mg L(−1)) possibly reduced the toxicity potential of this chemical species mixture with respect to the bioindicators. The influence of the variation in water hardness on the toxicity of the cladocerans was discussed. |
format | Online Article Text |
id | pubmed-5655341 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-56553412017-10-31 Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment Ferrari, Carla Rolim do Nascimento, Heliana de Azevedo Franco Rodgher, Suzelei Almeida, Tito Bruschi, Armando Luiz Nascimento, Marcos Roberto Lopes do Bonifácio, Rodrigo Leandro Sci Rep Article The water quality of the Antas reservoir, under the influence of treated effluents from a uranium mining area Ore Treatment Unit (UTM) with acid mine drainage, was investigated. Samples were collected every 3 months from the Antas reservoir (CAB, P41-E and P14) and from the UTM (P41-S). Chemical and acute 48 h toxicity tests using Ceriodaphnia silvestrii and Daphnia magna analyses were carried out to determine the potential environmental risks due to discharging the uranium mine effluents into this reservoir. All the water samples taken from the treated effluent (P41-S) were positively correlated with elevated concentrations of uranium, manganese, aluminum, zinc and fluoride and with high electrical conductivity and pH values, being considered toxic. In November 2014 water samples taken from the reservoir showed chemical concentrations above the legislation limits for fluoride (4.5 mg L(−1)) uranium (0.082 mg L(−1)), sulfate (662.4 mg L(−1)), manganese (1.125 mg L(−1)) and aluminum (1.55 mg L(−1)), and in July 2015 for fluoride (2.55 mg L(−1)), uranium (0.01 mg L(−1)) and manganese (0.36 mg L(−1)). The extremely high average value for hardness (543.55 mg L(−1)) possibly reduced the toxicity potential of this chemical species mixture with respect to the bioindicators. The influence of the variation in water hardness on the toxicity of the cladocerans was discussed. Nature Publishing Group UK 2017-10-24 /pmc/articles/PMC5655341/ /pubmed/29066833 http://dx.doi.org/10.1038/s41598-017-14100-w Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Ferrari, Carla Rolim do Nascimento, Heliana de Azevedo Franco Rodgher, Suzelei Almeida, Tito Bruschi, Armando Luiz Nascimento, Marcos Roberto Lopes do Bonifácio, Rodrigo Leandro Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment |
title | Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment |
title_full | Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment |
title_fullStr | Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment |
title_full_unstemmed | Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment |
title_short | Effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment |
title_sort | effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5655341/ https://www.ncbi.nlm.nih.gov/pubmed/29066833 http://dx.doi.org/10.1038/s41598-017-14100-w |
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