Long-term performance and stability of a continuous granular airlift reactor treating a high-strength wastewater containing a mixture of aromatic compounds
Ramos Quiroz, Carlos Antonio (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:	2016
Abstract:	Continuous feeding operation of an airlift reactor and its inoculation with mature aerobic granules allowed the successful treatment of a mixture of aromatic compounds (p-nitrophenol, o-cresol and phenol). Complete biodegradation of p-nitrophenol, o-cresol, phenol and their metabolic intermediates was achieved at an organic loading rate of 0. 61 g COD L⁻¹ d⁻¹. Stable granulation was obtained throughout the long-term operation (400 days) achieving an average granule size of 2. 0±1 mm and a sludge volumetric index of 26±1 mL g⁻¹ TSS. The identified genera in the aerobic granular biomass were heterotrophic bacteria able to consume aromatic compounds. Therefore, the continuous feeding regimen and the exposure of aerobic granules to a mixture of aromatic compounds make possible to obtain good granulation and high removal efficiency.
Grants:	Ministerio de Educación y Ciencia CTQ2011-24745/PPQ Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1255
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:	Aerobic granules ; Airlift reactor ; Phenolic compounds ; Industrial wastewaters
Published in:	Journal of hazardous materials, Vol. 303 (Feb. 2016) , p. 154-161, ISSN 1873-3336

DOI: 10.1016/j.jhazmat.2015.10.031

Post-print 26 p, 1.5 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