Modeling of simultaneous anaerobic methane and ammonium oxidation in a membrane biofilm reactor.

Chen, X; Guo, J; Shi, Y; Hu, S; Yuan, Z; Ni, B-J

Modeling of simultaneous anaerobic methane and ammonium oxidation in a membrane biofilm reactor.

Chen, X Guo, J Shi, Y Hu, S Yuan, Z Ni, B-J

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: Environ Sci Technol, 2014, 48, (16), pp. 9540-9547
Issue Date:: 2014-08-19

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Field	Value	Language
dc.contributor.author	Chen, X
dc.contributor.author	Guo, J
dc.contributor.author	Shi, Y
dc.contributor.author	Hu, S
dc.contributor.author	Yuan, Z
dc.contributor.author	Ni, B-J
dc.date.accessioned	2023-03-23T23:12:41Z
dc.date.available	2023-03-23T23:12:41Z
dc.date.issued	2014-08-19
dc.identifier.citation	Environ Sci Technol, 2014, 48, (16), pp. 9540-9547
dc.identifier.issn	0013-936X
dc.identifier.issn	1520-5851
dc.identifier.uri	http://hdl.handle.net/10453/168281
dc.description.abstract	Nitrogen removal by using the synergy of denitrifying anaerobic methane oxidation (DAMO) and anaerobic ammonium oxidation (Anammox) microorganisms in a membrane biofilm reactor (MBfR) has previously been demonstrated experimentally. In this work, a mathematical model is developed to describe the simultaneous anaerobic methane and ammonium oxidation by DAMO and Anammox microorganisms in an MBfR for the first time. In this model, DAMO archaea convert nitrate, both externally fed and/or produced by Anammox, to nitrite, with methane as the electron donor. Anammox and DAMO bacteria jointly remove the nitrite fed/produced, with ammonium and methane as the electron donor, respectively. The model is successfully calibrated and validated using the long-term (over 400 days) dynamic experimental data from the MBfR, as well as two independent batch tests at different operational stages of the MBfR. The model satisfactorily describes the methane oxidation and nitrogen conversion data from the system. Modeling results show the concentration gradients of methane and nitrogen would cause stratification of the biofilm, where Anammox bacteria mainly grow in the biofilm layer close to the bulk liquid and DAMO organisms attach close to the membrane surface. The low surface methane loadings result in a low fraction of DAMO microorganisms, but the high surface methane loadings would lead to overgrowth of DAMO bacteria, which would compete with Anammox for nitrite and decrease the fraction of Anammox bacteria. The results suggest an optimal methane supply under the given condition should be applied not only to benefit the nitrogen removal but also to avoid potential methane emissions.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	AMER CHEMICAL SOC
dc.relation	http://purl.org/au-research/grants/arc/DE130100451
dc.relation	http://purl.org/au-research/grants/arc/DP130103147
dc.relation.ispartof	Environ Sci Technol
dc.relation.isbasedon	10.1021/es502608s
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Ammonium Compounds
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Archaea
dc.subject.mesh	Biofilms
dc.subject.mesh	Bioreactors
dc.subject.mesh	Calibration
dc.subject.mesh	Denitrification
dc.subject.mesh	Methane
dc.subject.mesh	Methylococcaceae
dc.subject.mesh	Models, Theoretical
dc.subject.mesh	Nitrites
dc.subject.mesh	Nitrogen
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Biofilms
dc.subject.mesh	Methylococcaceae
dc.subject.mesh	Archaea
dc.subject.mesh	Nitrites
dc.subject.mesh	Nitrogen
dc.subject.mesh	Ammonium Compounds
dc.subject.mesh	Methane
dc.subject.mesh	Calibration
dc.subject.mesh	Bioreactors
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Models, Theoretical
dc.subject.mesh	Denitrification
dc.subject.mesh	Ammonium Compounds
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Archaea
dc.subject.mesh	Biofilms
dc.subject.mesh	Bioreactors
dc.subject.mesh	Calibration
dc.subject.mesh	Denitrification
dc.subject.mesh	Methane
dc.subject.mesh	Methylococcaceae
dc.subject.mesh	Models, Theoretical
dc.subject.mesh	Nitrites
dc.subject.mesh	Nitrogen
dc.subject.mesh	Oxidation-Reduction
dc.title	Modeling of simultaneous anaerobic methane and ammonium oxidation in a membrane biofilm reactor.
dc.type	Journal Article
utslib.citation.volume	48
utslib.location.activity	United States
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2023-03-23T23:12:39Z
pubs.issue	16
pubs.publication-status	Published
pubs.volume	48
utslib.citation.issue	16

Abstract:

Nitrogen removal by using the synergy of denitrifying anaerobic methane oxidation (DAMO) and anaerobic ammonium oxidation (Anammox) microorganisms in a membrane biofilm reactor (MBfR) has previously been demonstrated experimentally. In this work, a mathematical model is developed to describe the simultaneous anaerobic methane and ammonium oxidation by DAMO and Anammox microorganisms in an MBfR for the first time. In this model, DAMO archaea convert nitrate, both externally fed and/or produced by Anammox, to nitrite, with methane as the electron donor. Anammox and DAMO bacteria jointly remove the nitrite fed/produced, with ammonium and methane as the electron donor, respectively. The model is successfully calibrated and validated using the long-term (over 400 days) dynamic experimental data from the MBfR, as well as two independent batch tests at different operational stages of the MBfR. The model satisfactorily describes the methane oxidation and nitrogen conversion data from the system. Modeling results show the concentration gradients of methane and nitrogen would cause stratification of the biofilm, where Anammox bacteria mainly grow in the biofilm layer close to the bulk liquid and DAMO organisms attach close to the membrane surface. The low surface methane loadings result in a low fraction of DAMO microorganisms, but the high surface methane loadings would lead to overgrowth of DAMO bacteria, which would compete with Anammox for nitrite and decrease the fraction of Anammox bacteria. The results suggest an optimal methane supply under the given condition should be applied not only to benefit the nitrogen removal but also to avoid potential methane emissions.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/168281