RT Journal Article
T1 Influence of metabolism and microbiology on organic micropollutants biotransformation in anoxic heterotrophic reactors
A1 Martínez Quintela, Miguel
A1 Balboa Méndez, Sabela
A1 Coves Maciá, Jose Rubén
A1 Omil Prieto, Francisco
A1 Suárez Martínez, Sonia
K1 Organic micropollutants
K1 Biodiversity
K1 Cometabolism
K1 Anoxic process
AB There is scarce information about the biotransformation of organic micropollutants (OMPs) under anoxic conditions. In this study, a heterotrophic denitrifying bioreactor was set up to study the fate of several OMPs from metabolic and microbiological points of view. Primary metabolic activity was increased by adding progressively higher nitrogen loading rates during the operation (from 0.075 to 0.4 g N-NO3- L−1 d−1), which resulted in an important shift in the microbial population from a specialized biomass to a more diverse community. Such a change provoked a significant increase in the removal efficiency of erythromycin (ERY), roxithromycin (ROX) and bisphenol-A (BPA), and some bacterial taxa, such as Rhodoplanes, were identified as possible indicators related to the biodegradation of these compounds. The increasing primary metabolic activity in the reactor did not enhance the OMP-specific removal rates, suggesting that the bacterial composition is more influential than cometabolism
PB Elsevier
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29406
UL http://hdl.handle.net/10347/29406
LA eng
NO Journal of Hazardous Materials 442 (2023) 129983
NO This research was supported by the Spanish Research State Agency (AEI) through ANTARES (PID2019–110346RB-C21) project. M. Martinez-Quintela would also like to express his gratitude to the same agency for awarding a research scholarship (BES-2017–080503). All authors belong to the Galician Competitive Research Groups (GRC)_ ED431C-2021/37
DS Minerva
RD 24 abr 2026