Title:	Evaluation of the embryotoxicity in zebrafish (Danio rerio) of the flocculant and coagulant compounds used for water remediation
Other Titles:	Avaliação da embriotoxicidade em zebrafish (Danio rerio) de compostos floculantes e coagulantes usados em remediação da água
Authors:	Moura, Diego Sousa Mota, Rafael Oliveira Duarte da Gonçalves Júnior, José Francisco Vasconcelos, Newton Flávio de Reis, Marco Aurélio Grisolia, Cesar Koppe
metadata.dc.identifier.orcid:	http://orcid.org/0000-0002-5514-906X http://orcid.org/0000-0001-5757-7167 http://orcid.org/0000-0001-8191-2113 http://orcid.org/0000-0003-0654-0297 http://orcid.org/0000-0003-0565-6888 http://orcid.org/0000-0002-4456-1577
Assunto::	Mineração - resíduos Contaminação Águas residuais Toxicidade
Issue Date:	2019
Publisher:	Associação Brasileira de Limnologia
Citation:	MOURA, Diego Sousa et al. Evaluation of the embryotoxicity in zebrafish (Danio rerio) of the flocculant and coagulant compounds used for water remediation. Acta Limnologica Brasiliensia, v. 31, e12, 2019. DOI: https://doi.org/10.1590/s2179-975x8118. Disponível em: http://scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2019000100309. Acesso em: 23 jan. 2020.
Abstract:	Aim: Leaching from mining activities reaches water bodies, causing water contamination and acidification by toxic metals. As a consequence, oxygen depletion occurs, with the disappearance of certain benthic organisms, losses in phytoplankton and zooplankton biomass, and fish mortality. Remediation of contaminated water from mining involves the use of flocculants based on acrylamide monomers and polyacrylamide and of coagulants based on aluminum. Our aim was to assess the aquatic toxicity of the flocculant WF 424 and the coagulant WF 2000 PCA. Methods A flocculant anionic polymer (WF 424) and a coagulant polynuclear complex of polymerized hydro-aluminum ions (WF2000 PCA) were tested for embryotoxicity to zebrafish (Danio rerio, FET test - OEDC, 236, 2013). Results After 96 h of exposure to WF424, there was no significant lethality, nor were there sublethal effects such as hatching delay, heartbeat alteration, and malformation in embryonic development, when compared with the control group (p > 0.05). The coagulant compound WF2000 PCA did not show lethal effects during 96 h of exposure, and EC50 was considered as above the highest concentration-level tested. Conclusions For both compounds, no malformation, embryonic development delay or embryotoxicity were observed.
Licença::	(CC BY) - This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI:	https://doi.org/10.1590/s2179-975x8118
Appears in Collections:	Artigos publicados em periódicos e afins

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