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Biodegradation and effect of formaldehyde and phenol on the denitrification process
dc.contributor.author | Eiroa, M. | |
dc.contributor.author | Vilar, A. | |
dc.contributor.author | Amor, L. | |
dc.contributor.author | Kennes, Christian | |
dc.contributor.author | Veiga, María Carmen | |
dc.date.accessioned | 2014-10-23T15:26:45Z | |
dc.date.available | 2014-10-23T15:26:45Z | |
dc.date.issued | 2005 | |
dc.identifier.citation | Eiroa M, Vilar A, Amor L, Kennes C, Veiga MC. Biodegradation and effect of formaldehyde and phenol on the denitrification process. Water Res. 2005;39(2-3):449-55 | es_ES |
dc.identifier.other | DOI: 10.1016/j.watres.2004.09.017 | |
dc.identifier.uri | http://hdl.handle.net/2183/13726 | |
dc.description.abstract | Formaldehyde and phenol biodegradation during the denitrification process was studied at lab-scale, first in anoxic batch assays and then in a continuous anoxic reactor. The biodegradation of formaldehyde (260 mg l−1) as single carbon source and at phenol concentrations ranging from 30 to 580 mg l−1 was investigated in batch assays, obtaining an initial biodegradation rate around 0.5 g CH2O g VSS−1 d−1. With regard to phenol, its complete biodegradation was only observed at initial concentrations of 30 and 180 mg l−1. The denitrification process was inhibited at phenol concentrations higher than 360 mg l−1. Studies were also done using a continuous anoxic upflow sludge blanket reactor in which formaldehyde removal efficiencies above 99.5% were obtained at all the applied formaldehyde loading rates, between 0.89 and 0.14 g COD (CH2O) l−1 d−1. The phenol loading rate was increased from 0.03 to 1.3 g COD (C6H6O) l−1 d−1. Phenol removal efficiencies above 90.6% were obtained at phenol concentrations in the influent between 27 and 755 mg l−1. However, when the phenol concentration was increased to 1010 mg l−1, its removal efficiency decreased. Denitrification percentages around 98.4% were obtained with phenol concentrations in the influent up to 755 mg l−1. After increasing phenol concentration to 1010 mg l−1, the denitrification percentage decreased because of the inhibition caused by phenol. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.uri | http://dx.doi.org/10.1016/j.watres.2004.09.017 | es_ES |
dc.subject | Denitrifiction | es_ES |
dc.subject | Biodegradation | es_ES |
dc.subject | Formaldehyde | es_ES |
dc.subject | Phenol | es_ES |
dc.title | Biodegradation and effect of formaldehyde and phenol on the denitrification process | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/openAccess | es_ES |
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