Denitrifying activity via nitrite and N 2O production using acetate and swine wastewater

M. Belmonte; J. R. Vázquez-Padín; M. Figueroa; J. L. Campos; R. Méndez; G. Vidal; A. Mosquera-Corral

doi:10.1016/j.procbio.2012.04.012

Denitrifying activity via nitrite and N ₂O production using acetate and swine wastewater

M. Belmonte, J. R. Vázquez-Padín, M. Figueroa, J. L. Campos, R. Méndez, G. Vidal, A. Mosquera-Corral

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The presence of nitrite during denitrification is generally related to N ₂O emissions. The aim of this work was to determine the operational conditions that have influences in the specific denitrifying activities (SDA) and N ₂O production. Two factorial experimental designs (2 ³ and 2 ²) were performed to evaluate the effects of four operational variables (pH; biomass concentration; nitrite concentration and C/N ratio) on the SDA. Batch experiments were carried out with two different carbon sources: acetate and swine wastewater. Results showed that both biomass and NO ₂ ^- concentrations had a significant effect on the SDA in the presence of acetate, in the case of swine slurry, pH also affected the SDA. N ₂O production was only detected when swine wastewater was used and its specific production rate increased with the increase of the SDA. This result would indicate that N ₂O emissions are also promoted when swine wastewater is treated in conditions that favor the SDA.

Original language	English
Pages (from-to)	1202-1206
Number of pages	5
Journal	Process Biochemistry
Volume	47
Issue number	7
DOIs	https://doi.org/10.1016/j.procbio.2012.04.012
State	Published - Jul 2012
Externally published	Yes

Keywords

Acetate
Denitrifying activity
N O
Nitrite
Swine wastewater

Access to Document

10.1016/j.procbio.2012.04.012

Cite this

@article{9fe1ef09f00b41b0af0e48038ad31dbf,

title = "Denitrifying activity via nitrite and N 2O production using acetate and swine wastewater",

abstract = "The presence of nitrite during denitrification is generally related to N 2O emissions. The aim of this work was to determine the operational conditions that have influences in the specific denitrifying activities (SDA) and N 2O production. Two factorial experimental designs (2 3 and 2 2) were performed to evaluate the effects of four operational variables (pH; biomass concentration; nitrite concentration and C/N ratio) on the SDA. Batch experiments were carried out with two different carbon sources: acetate and swine wastewater. Results showed that both biomass and NO 2 - concentrations had a significant effect on the SDA in the presence of acetate, in the case of swine slurry, pH also affected the SDA. N 2O production was only detected when swine wastewater was used and its specific production rate increased with the increase of the SDA. This result would indicate that N 2O emissions are also promoted when swine wastewater is treated in conditions that favor the SDA.",

keywords = "Acetate, Denitrifying activity, N O, Nitrite, Swine wastewater",

author = "M. Belmonte and V{\'a}zquez-Pad{\'i}n, {J. R.} and M. Figueroa and Campos, {J. L.} and R. M{\'e}ndez and G. Vidal and A. Mosquera-Corral",

note = "Funding Information: This work was funded by the Chilean Government ( Program Doctoral BECAS-Chile/CONICYT , CONICYT/PBCT Grant TPI-01 , FONDECYT Grant 1090414 ), and the Spanish Government ( Togransys – CTQ2008-06792-C02-01 ). Authors want to thank, Mar Orge, Miriam Vieites and M{\'o}nica Dosil for their support in the analytical techniques, and Constantino Arce for his help with statistical analysis.",

year = "2012",

month = jul,

doi = "10.1016/j.procbio.2012.04.012",

language = "English",

volume = "47",

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journal = "Process Biochemistry",

issn = "1359-5113",

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T1 - Denitrifying activity via nitrite and N 2O production using acetate and swine wastewater

AU - Belmonte, M.

AU - Vázquez-Padín, J. R.

AU - Figueroa, M.

AU - Campos, J. L.

AU - Méndez, R.

AU - Vidal, G.

AU - Mosquera-Corral, A.

N1 - Funding Information: This work was funded by the Chilean Government ( Program Doctoral BECAS-Chile/CONICYT , CONICYT/PBCT Grant TPI-01 , FONDECYT Grant 1090414 ), and the Spanish Government ( Togransys – CTQ2008-06792-C02-01 ). Authors want to thank, Mar Orge, Miriam Vieites and Mónica Dosil for their support in the analytical techniques, and Constantino Arce for his help with statistical analysis.

PY - 2012/7

Y1 - 2012/7

N2 - The presence of nitrite during denitrification is generally related to N 2O emissions. The aim of this work was to determine the operational conditions that have influences in the specific denitrifying activities (SDA) and N 2O production. Two factorial experimental designs (2 3 and 2 2) were performed to evaluate the effects of four operational variables (pH; biomass concentration; nitrite concentration and C/N ratio) on the SDA. Batch experiments were carried out with two different carbon sources: acetate and swine wastewater. Results showed that both biomass and NO 2 - concentrations had a significant effect on the SDA in the presence of acetate, in the case of swine slurry, pH also affected the SDA. N 2O production was only detected when swine wastewater was used and its specific production rate increased with the increase of the SDA. This result would indicate that N 2O emissions are also promoted when swine wastewater is treated in conditions that favor the SDA.

AB - The presence of nitrite during denitrification is generally related to N 2O emissions. The aim of this work was to determine the operational conditions that have influences in the specific denitrifying activities (SDA) and N 2O production. Two factorial experimental designs (2 3 and 2 2) were performed to evaluate the effects of four operational variables (pH; biomass concentration; nitrite concentration and C/N ratio) on the SDA. Batch experiments were carried out with two different carbon sources: acetate and swine wastewater. Results showed that both biomass and NO 2 - concentrations had a significant effect on the SDA in the presence of acetate, in the case of swine slurry, pH also affected the SDA. N 2O production was only detected when swine wastewater was used and its specific production rate increased with the increase of the SDA. This result would indicate that N 2O emissions are also promoted when swine wastewater is treated in conditions that favor the SDA.

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