Inactivation and adaptation of ammonia-oxidizing bacteria and nitrite-oxidizing bacteria when exposed to free nitrous acid.

Ma, B; Yang, L; Wang, Q; Yuan, Z; Wang, Y; Peng, Y

Inactivation and adaptation of ammonia-oxidizing bacteria and nitrite-oxidizing bacteria when exposed to free nitrous acid.

Ma, B Yang, L Wang, Q

Yuan, Z Wang, Y Peng, Y

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Bioresource Technology, 2017, 245, (Pt A), pp. 1266-1270
Issue Date:: 2017-12

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Field	Value	Language
dc.contributor.author	Ma, B
dc.contributor.author	Yang, L
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.contributor.author	Yuan, Z
dc.contributor.author	Wang, Y
dc.contributor.author	Peng, Y
dc.date.accessioned	2022-08-19T05:45:33Z
dc.date.available	2017-08-13
dc.date.available	2022-08-19T05:45:33Z
dc.date.issued	2017-12
dc.identifier.citation	Bioresource Technology, 2017, 245, (Pt A), pp. 1266-1270
dc.identifier.issn	0960-8524
dc.identifier.issn	1873-2976
dc.identifier.uri	http://hdl.handle.net/10453/160524
dc.description.abstract	Inactivation and adaptation of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) to free nitrous acid (FNA) was investigated. Batch test results showed that AOB and NOB were inactivated when treated with FNA. After an 85-day operating period, AOB in a continuous pre-denitrification reactor did not adapt to the FNA that was applied to treat some of the return activated sludge. In contrast, NOB did adapt to FNA. NOB activity in the seed sludge was only 11% of the original activity after FNA batch treatment, at 0.75mg HNO2-N/L. NOB activity in the pre-denitrification reactor was not affected after being exposed to this FNA level. Nitrosomonas was the dominant AOB before and after long-term FNA treatment. However, dominant NOB changed from Nitrospira to Candidatus Nitrotoga, a novel NOB genus, after long-term FNA treatment. This adaptation of NOB to FNA may be due to the shift in NOB population makeup.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Bioresource Technology
dc.relation.isbasedon	10.1016/j.biortech.2017.08.074
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Biotechnology
dc.subject.mesh	Ammonia
dc.subject.mesh	Bacteria
dc.subject.mesh	Bioreactors
dc.subject.mesh	Nitrites
dc.subject.mesh	Nitrous Acid
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Sewage
dc.subject.mesh	Ammonia
dc.subject.mesh	Bacteria
dc.subject.mesh	Bioreactors
dc.subject.mesh	Nitrites
dc.subject.mesh	Nitrous Acid
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Sewage
dc.subject.mesh	Bacteria
dc.subject.mesh	Nitrous Acid
dc.subject.mesh	Nitrites
dc.subject.mesh	Ammonia
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Oxidation-Reduction
dc.title	Inactivation and adaptation of ammonia-oxidizing bacteria and nitrite-oxidizing bacteria when exposed to free nitrous acid.
dc.type	Journal Article
utslib.citation.volume	245
utslib.location.activity	England
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	*
pubs.consider-herdc	false
dc.date.updated	2022-08-19T05:45:32Z
pubs.issue	Pt A
pubs.publication-status	Published
pubs.volume	245
utslib.citation.issue	Pt A

Abstract:

Inactivation and adaptation of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) to free nitrous acid (FNA) was investigated. Batch test results showed that AOB and NOB were inactivated when treated with FNA. After an 85-day operating period, AOB in a continuous pre-denitrification reactor did not adapt to the FNA that was applied to treat some of the return activated sludge. In contrast, NOB did adapt to FNA. NOB activity in the seed sludge was only 11% of the original activity after FNA batch treatment, at 0.75mg HNO2-N/L. NOB activity in the pre-denitrification reactor was not affected after being exposed to this FNA level. Nitrosomonas was the dominant AOB before and after long-term FNA treatment. However, dominant NOB changed from Nitrospira to Candidatus Nitrotoga, a novel NOB genus, after long-term FNA treatment. This adaptation of NOB to FNA may be due to the shift in NOB population makeup.

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http://hdl.handle.net/10453/160524