Towards efficient heterotrophic recovery of N2O via Fe(II)EDTA-NO: A modeling study.

Deng, R; Huo, P; Chen, X; Chen, Z; Yang, L; Liu, Y; Wei, W; Ni, B-J

Towards efficient heterotrophic recovery of N2O via Fe(II)EDTA-NO: A modeling study.

Deng, R Huo, P Chen, X Chen, Z

Yang, L Liu, Y

Wei, W Ni, B-J

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Sci Total Environ, 2023, 859, (Pt 1), pp. 160285
Issue Date:: 2023-02-10

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Field	Value	Language
dc.contributor.author	Deng, R
dc.contributor.author	Huo, P
dc.contributor.author	Chen, X
dc.contributor.author	Chen, Z https://orcid.org/0000-0003-0627-0856
dc.contributor.author	Yang, L
dc.contributor.author	Liu, Y https://orcid.org/0000-0001-6677-7961
dc.contributor.author	Wei, W
dc.contributor.author	Ni, B-J
dc.date.accessioned	2023-03-23T01:42:39Z
dc.date.available	2022-11-15
dc.date.available	2023-03-23T01:42:39Z
dc.date.issued	2023-02-10
dc.identifier.citation	Sci Total Environ, 2023, 859, (Pt 1), pp. 160285
dc.identifier.issn	0048-9697
dc.identifier.issn	1879-1026
dc.identifier.uri	http://hdl.handle.net/10453/168140
dc.description.abstract	Efficient recovery of nitrous oxide (N2O) through heterotrophic denitrification with the help of Fe(II)EDTA-NO as a chelating agent has been regarded as an ideal technology to treat nitric oxide (NO)-rich flue gas. In this study, an integrated NO-based biological denitrification model was developed to describe the sequential reduction of the NO fixed in Fe(II)EDTA-NO with organic carbon as the electron donor. With the inclusion of only the key pathways contributing to nitrogen transformation, the model was firstly developed and then calibrated/validated and evaluated using the data of batch tests mediated by the identified functional heterotrophic bacteria at various substrates concentrations and then used to explore the possibility of enhancing N2O recovery by altering the substrates condition and reactor setup. The results demonstrated that the optimal COD/N ratio decreased consistently from 1.5 g-COD/g-N at the initial NO concentration of 40 g-N/m3 to 1.0 g-COD/g-N at the initial NO concentration of 420 g-N/m3. Furthermore, sufficiently increasing the headspace volume of the reactor was considered an ideal strategy to obtain ideal N2O production of 86.6 % under the studied conditions. The production of high-purity N2O (98 %) confirmed the practical application potential of this integrated treatment technology to recover a valuable energy resource from NO-rich flue gas.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation	http://purl.org/au-research/grants/arc/DP220101142
dc.relation.ispartof	Sci Total Environ
dc.relation.isbasedon	10.1016/j.scitotenv.2022.160285
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.subject.mesh	Denitrification
dc.subject.mesh	Nitric Oxide
dc.subject.mesh	Edetic Acid
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Heterotrophic Processes
dc.subject.mesh	Bioreactors
dc.subject.mesh	Nitric Oxide
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Edetic Acid
dc.subject.mesh	Bioreactors
dc.subject.mesh	Heterotrophic Processes
dc.subject.mesh	Denitrification
dc.subject.mesh	Denitrification
dc.subject.mesh	Nitric Oxide
dc.subject.mesh	Edetic Acid
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Heterotrophic Processes
dc.subject.mesh	Bioreactors
dc.title	Towards efficient heterotrophic recovery of N2O via Fe(II)EDTA-NO: A modeling study.
dc.type	Journal Article
utslib.citation.volume	859
utslib.location.activity	Netherlands
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	2023-03-23T01:42:14Z
pubs.issue	Pt 1
pubs.publication-status	Published
pubs.volume	859
utslib.citation.issue	Pt 1

Abstract:

Efficient recovery of nitrous oxide (N2O) through heterotrophic denitrification with the help of Fe(II)EDTA-NO as a chelating agent has been regarded as an ideal technology to treat nitric oxide (NO)-rich flue gas. In this study, an integrated NO-based biological denitrification model was developed to describe the sequential reduction of the NO fixed in Fe(II)EDTA-NO with organic carbon as the electron donor. With the inclusion of only the key pathways contributing to nitrogen transformation, the model was firstly developed and then calibrated/validated and evaluated using the data of batch tests mediated by the identified functional heterotrophic bacteria at various substrates concentrations and then used to explore the possibility of enhancing N2O recovery by altering the substrates condition and reactor setup. The results demonstrated that the optimal COD/N ratio decreased consistently from 1.5 g-COD/g-N at the initial NO concentration of 40 g-N/m3 to 1.0 g-COD/g-N at the initial NO concentration of 420 g-N/m3. Furthermore, sufficiently increasing the headspace volume of the reactor was considered an ideal strategy to obtain ideal N2O production of 86.6 % under the studied conditions. The production of high-purity N2O (98 %) confirmed the practical application potential of this integrated treatment technology to recover a valuable energy resource from NO-rich flue gas.

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http://hdl.handle.net/10453/168140