RT Journal Article
T1 Cometabolic removal of organic micropollutants by enriched nitrite-dependent anaerobic methane oxidizing cultures
A1 Martínez Quintela, Miguel
A1 Arias Baño, Adrián
A1 Alvariño Pereira, Teresa
A1 Suárez Martínez, Sonia
A1 Garrido Fernández, Juan Manuel
A1 Omil Prieto, Francisco
K1 n-damo process
K1 Organic micropollutants
K1 Cometabolism
K1 Enrichment
K1 MBR
AB 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
PB Elsevier
SN 0304-3894
YR 2021
FD 2021
LK http://hdl.handle.net/10347/25032
UL http://hdl.handle.net/10347/25032
LA eng
NO Journal of Hazardous Materials, 402 (2021) 123450. doi: 10.1016/j.jhazmat.2020.123450
NO This research was carried out with the financial support received from Spanish Ministry of Economy and Competitiveness through the project COMETT (CTQ2016-80847-R), co-funded by FEDER. M. Martínez would also like to express his gratitude to the same Ministry for awarding a research scholarship (BES-2017-080503). The authors belong to the Galician Competitive Research Group GRC (ED431C 2017/29), programme co-funded by FEDER, and to CRETUS Strategic Partnership (ED431E 2018/01)
DS Minerva
RD 30 abr 2026