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The metabolic versatility of PAOs as an opportunity to obtain a highly P-enriched stream for further P-recovery

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The metabolic versatility of PAOs as an opportunity to obtain a highly P-enriched stream for further P-recovery

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dc.contributor.author Acevedo Juárez, Brenda es_ES
dc.contributor.author Camiña, C. es_ES
dc.contributor.author Corona, J. E. es_ES
dc.contributor.author Borrás Falomir, Luis es_ES
dc.contributor.author Barat Baviera, Ramón es_ES
dc.date.accessioned 2016-04-26T11:00:14Z
dc.date.available 2016-04-26T11:00:14Z
dc.date.issued 2015-06-15
dc.identifier.issn 1385-8947
dc.identifier.uri http://hdl.handle.net/10251/62943
dc.description.abstract The effects of two sequencing batch reactor operation strategies for phosphorus stream enrichment over the biological phosphorus removal performance have been studied. The objective of both strategies is of performing an extraction cycle in order to obtain a new stream highly enriched with phosphorus. In the 1st strategy the amount of influent volatile fatty acids (VFAs) is the same in each cycle; while in the 2nd strategy the influent VFAs concentration is increased during phosphorus extraction experiments. Despite the strong decrease of the stored poly-P inside the cells in both strategies after the recovery cycles, the ability of the systems to remove phosphorus was not affected. The P-release/HAcuptake ratio (changing from 0.73 to 0.21 mmol P mmol C-1) together with FISH analyses (around 85% of Accumulibacter through the experimental period) confirmed that a shift from PAM to GAM occurred after phosphorus enrichment in the 2nd strategy experiments. These results suggest that energy required for VFA uptake by polyphosphate-accumulating organisms (PAO5) was not only derived from polyphosphates degradation, but also from glycogen degradation. FISH also revealed that Type II Accumulibacter species are responsible of the metabolic shift. The strategy based on increasing influent VFAs concentration during phosphorus extraction experiments showed a higher extraction efficiency (from 46% to 76%), as higher phosphorus concentration within supernatant can be achieved (from 113.9 to 198.7 mg Pl(-1)). Following this strategy, it is possible to concentrate up to 81% of the incoming phosphorus in a single enriched stream. This suggests that, despite the extra addition of carbon source needed (9%), this strategy is more appropriate if phosphorus recovery for reuse purposes is required. (C) 2015 Elsevier BM. All rights reserved. es_ES
dc.description.sponsorship This research work has been supported by the Generalitat Valenciana (GVPRE/2008/044) and the Polytechnic University of Valencia (PAID-06-08-3227), which are gratefully acknowledged. Special acknowledgements to Consejo Nacional de la Ciencia y la Tecnologia de Mexico (CONACYT) No. 207966. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Generalitat Valenciana GVPRE/2008/044 es_ES
dc.relation Polytechnic University of Valencia PAID-06-08-3227 es_ES
dc.relation.ispartof Chemical Engineering Journal es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Phosphorus recovery es_ES
dc.subject Polyphosphate (poly-P) es_ES
dc.subject Polyphosphate accumulating metabolism (PAM) es_ES
dc.subject Glycogen accumulating metabolism (GAM) es_ES
dc.subject Enhanced biological phosphorus removal (EBPR) es_ES
dc.subject Sequencing batch reactor (SBR) es_ES
dc.subject.classification TECNOLOGIA DEL MEDIO AMBIENTE es_ES
dc.title The metabolic versatility of PAOs as an opportunity to obtain a highly P-enriched stream for further P-recovery es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.cej.2015.02.063
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Ingeniería del Agua y del Medio Ambiente - Institut Universitari d'Enginyeria de l'Aigua i Medi Ambient es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient es_ES
dc.description.bibliographicCitation Acevedo Juárez, B.; Camiña, C.; Corona, JE.; Borrás Falomir, L.; Barat Baviera, R. (2015). The metabolic versatility of PAOs as an opportunity to obtain a highly P-enriched stream for further P-recovery. Chemical Engineering Journal. 270:459-467. doi:10.1016/j.cej.2015.02.063 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.cej.2015.02.063 es_ES
dc.description.upvformatpinicio 459 es_ES
dc.description.upvformatpfin 467 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 270 es_ES
dc.relation.senia 302806 es_ES


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