Methanol-driven enhanced biological phosphorus removal with a syntrophic consortium
Tayà Cristellys, Carlota (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Guerrero Camacho, Francisco Javier (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Vanneste, Gianni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Guisasola, Albert (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Baeza Labat, Juan Antonio (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Data:	2013
Resum:	The presence of suitable carbon sources for enhanced biological phosphorus removal (EBPR) plays a key role in phosphorus removal from wastewater in urban WWTP. For wastewaters with low volatile fatty acids (VFAs) content, an external carbon addition is necessary. As methanol is the most commonly external carbon source used for denitrification it could be a priori a promising alternative, but previous attempts to use it for EBPR have failed. This study is the first successful report of methanol utilization as external carbon source for EBPR. Since a direct replacement strategy (i. e. , supply of methanol as a sole carbon source to a propionic-fed PAO-enriched sludge) failed, a novel process was designed and implemented successfully: development of a consortium with anaerobic biomass and polyphosphate accumulating organisms (PAOs). Methanol-degrading acetogens were (i) selected against other anaerobic methanol degraders from an anaerobic sludge; (ii) subjected to conventional EBPR conditions (anaerobic + aerobic); and (iii) bioaugmented with PAOs. EBPR with methanol as a sole carbon source was sustained in a mid-term basis with this procedure.
Ajuts:	Ministerio de Ciencia y Tecnología FPU/AP/2009-1632 Ministerio de Ciencia y Tecnología CTM2010-20384 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-815
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Enhanced biological phosphorus removal (EBPR) ; Methanol ; Acetogens ; Polyphosphate accumulating organisms (PAOs) ; Glycogen accumulating organisms (GAOs)
Publicat a:	Biotechnology and bioengineering, Vol. 110, Issue 2 (Feb. 2013) , p.391-400, ISSN 0006-3592

DOI: 10.1002/bit.24625

Post-print 32 p, 2.2 MB

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