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Título: | Evaluation of algaecide effectiveness of five different oxidants applied on harmful phytoplankton |
Autor: | Moreno-Andrés, Javier; Romero-Martínez, Leonardo; Seoane, Sergio; Acevedo-Merino, Asunción; Moreno-Garrido, Ignacio CSIC ORCID ; Nebot, Enrique | Palabras clave: | Aquaculture Ballast water Chemical algaecide Peroxides Toxic microalgae |
Fecha de publicación: | 15-jun-2023 | Editor: | Elsevier BV | Citación: | Journal of Hazardous Materials 452: 131279 (2023) | Resumen: | Harmful algal blooms (HABs) in coastal areas similarly impact both ecosystems and human health. The translocation of phytoplankton species via maritime transport can potentially promote the growth of HABs in coastal systems. Accordingly, ballast water must be disinfected. The main goal of this study is to assess the effectiveness of different emerging biocides, including H2O2, peracetic acid (PAA), peroxymonosulfate (PMS), and peroxydisulfate (PDS). The effectiveness of these biocides is compared with that of conventional chlorination methods. Their effects on two ichthyotoxic microalgae with worldwide distribution, i.e., Prymnesium parvum and Heterosigma akashiwo, are examined. To ensure the prolonged effectiveness of the different reagents, their concentration-response curves for 14 days are constructed and examined. The results suggest a strong but shorter effect by PMS (EC50 = 0.40-1.99 mg·L-1) and PAA (EC50 = 0.32-2.70 mg·L-1), a maintained effect by H2O2 (EC50 = 6.67-7.08 mg·L-1), and a negligible effect by PDS. H. akashiwo indicates higher resistance than P. parvum, except when H2O2 is used. Based on the growth inhibition performance and consumption of the reagents as well as a review of important aspects regarding their application, using H2O2, PAA, or PMS can be a feasible alternative to chlorine-based reagents for inhibiting the growth of harmful phytoplankton. | Versión del editor: | https://doi.org/10.1016/j.jhazmat.2023.131279 | URI: | http://hdl.handle.net/10261/337390 | DOI: | 10.1016/j.jhazmat.2023.131279 | ISSN: | 0304-3894 | E-ISSN: | 1873-3336 |
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Evaluation_algaecide_Moreno_Andres.pdf | 2,24 MB | Adobe PDF | Visualizar/Abrir |
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