Inhibition of the anammox activity by aromatic compounds
Ramos Quiroz, Carlos Antonio (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Fernández, Isaac (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Suárez Ojeda, María Eugenia (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Carrera, Julian (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Date:	2015
Abstract:	The short-term effect of several aromatic compounds (o-cresol, p-nitrophenol, o-chlorophenol and quinoline) was evaluated over granular anammox sludge cultivated over 2 years in a Sequencing Batch Reactor (SBR). The anammox granular sludge had an average size of 1. 0 ± 0. 2 mmand was enriched in Brocadia sp. Specific Anammox Activity (SAA) batch tests with this granular biomass were carried out in the presence of o-cresol, p-nitrophenol, o-chlorophenol, quinoline and their mixtures. The anammox biomass was never exposed to the tested aromatic compounds, prior to the SAA tests. The concentration and the mixture of aromatic compounds had a strong effect over the loss of the anammox activity. The higher the concentrations of the aromatic compounds, the higher the reduction of the SAA. Quinoline and p-nitrophenol have a lower negative effect compared to o-cresol and o- chlorophenol. The Luong inhibition model seems to adjust better the inhibition of anammox biomass by the tested aromatic compounds. Depending on the aromatic compound, toxic or inhibitory effect was measured. o-Cresol and o-chlorophenol caused a toxic effect whereas p-nitrophenol and quinoline produced an inhibitory effect. In general, synergistic effects were observed when mixtures of aromatic compounds were studied.
Grants:	Ministerio de Economía y Competitividad CTQ2011-24745/PPQ Agència de Gestió d'Ajuts Universitaris i de Recerca 2005/SGR-00721
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:	Inhibition ; Anammox ; Phenols ; Quinoline
Published in:	Chemical engineering journal, Vol. 279 (Nov. 2015) , p. 681-688, ISSN 1873-3212

DOI: 10.1016/j.cej.2015.05.071

Post-print 26 p, 1.6 MB

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