Cometabolic removal of organic micropollutants by enriched nitrite-dependent anaerobic methane oxidizing cultures
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Título: | Cometabolic removal of organic micropollutants by enriched nitrite-dependent anaerobic methane oxidizing cultures |
Autor/a: | Martínez Quintela, Miguel Arias Baño, Adrián Alvariño Pereira, Teresa Suárez Martínez, Sonia Garrido Fernández, Juan Manuel Omil Prieto, Francisco |
Centro/Departamento: | Universidade de Santiago de Compostela. Departamento de Enxeñaría Química Universidade de Santiago de Compostela. Instituto Interdisciplinar de Tecnoloxías Ambientais (CRETUS) |
Palabras chave: | n-damo process | Organic micropollutants | Cometabolism | Enrichment | MBR | |
Data: | 2021 |
Editor: | Elsevier |
Cita bibliográfica: | Journal of Hazardous Materials, 402 (2021) 123450. doi: 10.1016/j.jhazmat.2020.123450 |
Resumo: | The innovative and recently discovered n-damo process, based on anaerobic methane oxidation with nitrite, was developed in a membrane-based bioreactor and evaluated in terms of organic micropollutants (OMPs) removal. The main singularity of this study consisted in the evaluation of organic micropollutants (OMPs) removal in the biological reactor. A strategy consisting on progressively increasing the nitrogen loading rate in order to increase the specific denitrification activity was followed to check if the selected OMPs were co-metabolically biotransformed. Significant nitrite removal rate (24.1 mg N L−1 d−1) was achieved after only 30 days of operation. A maximum specific removal of 186.3 mg N gVSS−1 d−1 was obtained at the end of the operation, which is one of the highest previously reported. A successfully n-damo bacteria enrichment was achieved, being Candidatus Methylomirabilis the predominant bacteria during the whole operation attaining a maximum relative abundance of about 40 %. The natural hormones (E1 and E2) were completely removed in the bioreactor. The specific removal rates of erythromycin (ERY), fluoxetine (FLX), roxithromycin (ROX) and sulfamethoxazole (SMX) were successfully correlated with the specific nitrite removal rates, suggesting a co-metabolic biotransformation |
Versión do editor: | https://doi.org/10.1016/j.jhazmat.2020.123450 |
URI: | http://hdl.handle.net/10347/25032 |
DOI: | 10.1016/j.jhazmat.2020.123450 |
ISSN: | 0304-3894 |
Dereitos: | © 2020 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0) Attribution-NonCommercial-NoDerivatives 4.0 Internacional |
Coleccións
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- BIOGROUP-Artigos [134]
- CRETUS-Artigos [232]
- EQ-Artigos [292]
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