Nitrous oxide production by nitrifying biofilms in a biofilm airlift suspension reactor

J. M. Garrido; J. L. Campos; R. Méndez; J. M. Lema

doi:10.1016/S0273-1223(97)00348-X

Nitrous oxide production by nitrifying biofilms in a biofilm airlift suspension reactor

J. M. Garrido, J. L. Campos, R. Méndez, J. M. Lema

Research output: Contribution to journal › Conference article › peer-review

20 Scopus citations

Abstract

A nitrifying biofilm airlift suspension (BAS) reactor was operated at an ammonia loading rate (ALR) of 5 kg N-NH₄⁺/m³.d, obtaining ammonia conversions of 99%. Neither denitrification nor nitrous oxide production was detected when a suitable carbon source was not present in the system over a long experimental period. However, in the presence of organic matter coming from biofilm hydrolysis or added in the influent nitrous oxide production was found. The addition of 55 mg/l formaldehyde to the influent produced rises in the nitrous oxide production of up to 2 kg N-N₂O/m³.d. Nitrogen balance showed that nitrous oxide was the sole or major product of denitrification in the system.

Original language	English
Pages (from-to)	157-163
Number of pages	7
Journal	Water Science and Technology
Volume	36
Issue number	1
DOIs	https://doi.org/10.1016/S0273-1223(97)00348-X
State	Published - 1997
Externally published	Yes
Event	Proceedings of the 1996 IAWQ 3rd International Specialised Conference on Biofilm Systems - Copenhagen, Den Duration: 27 Aug 1996 → 30 Aug 1996

Keywords

Airlift reactor
Denitrification
Formaldehyde
Nitrifying biofilm
Nitrous oxide

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10.1016/S0273-1223(97)00348-X

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title = "Nitrous oxide production by nitrifying biofilms in a biofilm airlift suspension reactor",

abstract = "A nitrifying biofilm airlift suspension (BAS) reactor was operated at an ammonia loading rate (ALR) of 5 kg N-NH4+/m3.d, obtaining ammonia conversions of 99%. Neither denitrification nor nitrous oxide production was detected when a suitable carbon source was not present in the system over a long experimental period. However, in the presence of organic matter coming from biofilm hydrolysis or added in the influent nitrous oxide production was found. The addition of 55 mg/l formaldehyde to the influent produced rises in the nitrous oxide production of up to 2 kg N-N2O/m3.d. Nitrogen balance showed that nitrous oxide was the sole or major product of denitrification in the system.",

keywords = "Airlift reactor, Denitrification, Formaldehyde, Nitrifying biofilm, Nitrous oxide",

author = "Garrido, {J. M.} and Campos, {J. L.} and R. M{\'e}ndez and Lema, {J. M.}",

note = "Funding Information: This work was founded by the Spanish Comission of Science and Technology (CICYT, Project AMB95• 0365) and the European Commission (Project CII-Cf93-Q0(0).; Proceedings of the 1996 IAWQ 3rd International Specialised Conference on Biofilm Systems ; Conference date: 27-08-1996 Through 30-08-1996",

year = "1997",

doi = "10.1016/S0273-1223(97)00348-X",

language = "English",

volume = "36",

pages = "157--163",

journal = "Water Science and Technology",

issn = "0273-1223",

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TY - JOUR

T1 - Nitrous oxide production by nitrifying biofilms in a biofilm airlift suspension reactor

AU - Garrido, J. M.

AU - Campos, J. L.

AU - Méndez, R.

AU - Lema, J. M.

N1 - Funding Information: This work was founded by the Spanish Comission of Science and Technology (CICYT, Project AMB95• 0365) and the European Commission (Project CII-Cf93-Q0(0).

PY - 1997

Y1 - 1997

N2 - A nitrifying biofilm airlift suspension (BAS) reactor was operated at an ammonia loading rate (ALR) of 5 kg N-NH4+/m3.d, obtaining ammonia conversions of 99%. Neither denitrification nor nitrous oxide production was detected when a suitable carbon source was not present in the system over a long experimental period. However, in the presence of organic matter coming from biofilm hydrolysis or added in the influent nitrous oxide production was found. The addition of 55 mg/l formaldehyde to the influent produced rises in the nitrous oxide production of up to 2 kg N-N2O/m3.d. Nitrogen balance showed that nitrous oxide was the sole or major product of denitrification in the system.

AB - A nitrifying biofilm airlift suspension (BAS) reactor was operated at an ammonia loading rate (ALR) of 5 kg N-NH4+/m3.d, obtaining ammonia conversions of 99%. Neither denitrification nor nitrous oxide production was detected when a suitable carbon source was not present in the system over a long experimental period. However, in the presence of organic matter coming from biofilm hydrolysis or added in the influent nitrous oxide production was found. The addition of 55 mg/l formaldehyde to the influent produced rises in the nitrous oxide production of up to 2 kg N-N2O/m3.d. Nitrogen balance showed that nitrous oxide was the sole or major product of denitrification in the system.

KW - Airlift reactor

KW - Denitrification

KW - Formaldehyde

KW - Nitrifying biofilm

KW - Nitrous oxide

UR - http://www.scopus.com/inward/record.url?scp=0030819869&partnerID=8YFLogxK

U2 - 10.1016/S0273-1223(97)00348-X

DO - 10.1016/S0273-1223(97)00348-X

M3 - Conference article

AN - SCOPUS:0030819869

SN - 0273-1223

VL - 36

SP - 157

EP - 163

JO - Water Science and Technology

JF - Water Science and Technology

IS - 1

T2 - Proceedings of the 1996 IAWQ 3rd International Specialised Conference on Biofilm Systems

Y2 - 27 August 1996 through 30 August 1996

ER -

Nitrous oxide production by nitrifying biofilms in a biofilm airlift suspension reactor

Abstract

Keywords

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