Web of Science: 18 cites, Scopus: 24 cites, Google Scholar: cites,
The selective role of nitrite in the PAO/GAO competition
Tayà Cristellys, Carlota (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Garlapati, Vijay Kumar (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Guisasola Canudas, Albert (Universitat Autònoma de Barcelona. Departament d’Enginyeria Química, Biològica i Ambiental)
Baeza Labat, Juan Antonio (Universitat Autònoma de Barcelona. Departament d’Enginyeria Química)

Data: 2013
Resum: Proliferation of Glycogen Accumulating Organisms (GAOs) accounts as one of the major bottlenecks in biological phosphorus removal systems. GAO outcompeting polyphosphate accumulating organisms (PAOs) results in lower P-removal. Thus, finding optimal conditions that favour PAO in front of GAO is a current focus of research. This work shows how nitrite can provide a novel strategy for PAO enrichment. A propionate-fed GAO- nriched biomass (70% Defluviicoccus I, 18% Defluviicoccus II and 10% PAO) was subjected more than 50 d under anaerobic-anoxic conditions with nitrite as electron acceptor. These operational conditions led to a PAO-enriched sludge (85%) where GAO were washed out of the system (<10%), demonstrating the validity of the new approach for PAO enrichment. In addition, the presented suppression of Defluviicocus GAO with nitrite represents an add-on benefit to the nitrite-based systems since the proliferation of non-desirable GAO can be easily ruled out and added to the other benefits (i. e. lower aeration and COD requirements).
Nota: Número d'acord de subvenció MICINN/CTM2010-20384
Nota: Número d'acord de subvenció AGAUR/2009/SGR-815
Drets: Tots els drets reservats
Llengua: Anglès.
Document: article ; recerca ; acceptedVersion
Matèria: Enhanced biological phosphorus removal (EBPR) ; Nitrite ; Selection ; Polyphosphate accumulating organisms (PAOs) ; Glycogen Accumulating Organisms (GAOs)
Publicat a: Chemosphere, Vol. 93, issue 4 (Oct. 2013) , p. 612-618, ISSN 0045-6535

DOI: 10.1016/j.chemosphere.2013.06.006


Post-print
33 p, 1.6 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Enginyeries > GENOCOV
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2017-01-26, darrera modificació el 2019-02-02



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