Simultaneous partial nitrification and 2-fluorophenol biodegradation with aerobic granular biomass: Reactor performance and microbial communities
Ramos Quiroz, Carlos Antonio (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Amorim, Catarina L. (Universidade de Aveiro (Portugal). Centro de Estudos do Ambiente e do Mar)
Mesquita, Daniela P. (Universidade do Minho. Centre of Biological Engineering)
Ferreira, Eugénio C. (Universidade do Minho. Centre of Biological Engineering)
Carrera, Julian (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Castro, Paula M. L. (Universidade Católica Portuguesa. Escola Superior de Biotecnologia)

Date:	2017
Abstract:	An aerobic granular bioreactor was operated for over 4 months, treating a synthetic wastewater with a high ammonium content (100 mg N L⁻¹). The inoculum was collected from a bioreactor performing simultaneous partial nitrification and aromatic compounds biodegradation. From day-56 onwards, 2-fluorophenol (2-FP) (12. 4 mg L⁻¹) was added to the feeding wastewater and the system was bioaugmented with a 2-FP degrading bacteria (Rhodococcus sp. FP1). By the end of operation, complete 2-FP biodegradation and partial nitrification were simultaneously achieved. Aerobic granules remained stable over time. During the 2-FP loading, a shift in the community structure occurred, coinciding with the improvement of 2-FP degradation. DGGE analysis did not allow to infer on the bioaugmented strain presence but pyrosequencing analysis detected Rhodococcus genus by the end of operation. Together with other potential phenolic-degraders within granules, these microorganisms were probably responsible for 2-FP degradation.
Grants:	European Commission COST Action ES1202 Ministerio de Educación y Ciencia CTQ2011-24745/PPQ
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Granulation ; Bioaugmentation ; Nitritation ; Phenolic compound ; Molecular biology
Published in:	Bioresource technology, Vol. 238 (Aug. 2017) , p. 232-240, ISSN 0960-8524

DOI: 10.1016/j.biortech.2017.03.173

Post-print 28 p, 1.2 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Engineering > GENOCOV
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