Rapid and strong biocidal effect of ferrate on sulfidogenic and methanogenic sewer biofilms.

Yan, X; Sun, J; Kenjiahan, A; Dai, X; Ni, B-J; Yuan, Z

Rapid and strong biocidal effect of ferrate on sulfidogenic and methanogenic sewer biofilms.

Yan, X Sun, J Kenjiahan, A Dai, X Ni, B-J Yuan, Z

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Water research, 2020, 169
Issue Date:: 2020-02

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Field	Value	Language
dc.contributor.author	Yan, X
dc.contributor.author	Sun, J
dc.contributor.author	Kenjiahan, A
dc.contributor.author	Dai, X
dc.contributor.author	Ni, B-J
dc.contributor.author	Yuan, Z
dc.date.accessioned	2021-03-23T03:40:16Z
dc.date.available	2019-10-15
dc.date.available	2021-03-23T03:40:16Z
dc.date.issued	2020-02
dc.identifier.citation	Water research, 2020, 169
dc.identifier.issn	0043-1354
dc.identifier.issn	1879-2448
dc.identifier.uri	http://hdl.handle.net/10453/147470
dc.description.abstract	For the control of sulfide and methane in sewers, it is favorable to reduce their production rather than to remove them after generation. In this study, we revealed rapid and strong biocidal effect of ferrate (Fe(VI)) on sulfidogenic and methanogenic sewer biofilms, leading to control of sulfide and methane production in sewer. The inactivation of the microorganisms in sewer biofilms by Fe(VI) could be accomplished within 15 min for a single dosing event and the biocidal effect could be enhanced by applying pulse dosing strategy. The microbiological analysis showed that the key functional genes involved in sulfide and methane production, i.e. dsrA and mcrA, in the viable cells after Fe(VI) dosing were decreased substantially by 84.2% and 86.6%, respectively. Significant drops were also observed in the relative abundances of viable sulfide reducing bacteria (SRB) and methanogenic archaea (MA). The direct dosing of Fe(VI) into a sewer reactor led to instant and complete suppression of sulfidogenic and methanogenic activities, and the recovery of the activities resembled the regrowth of residual SRB and MA. The results of this study suggested the feasibility for developing an efficient and cost-effective sulfide and methane control strategy using Fe(VI).
dc.format	Print-Electronic
dc.language	eng
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	Water research
dc.relation.isbasedon	10.1016/j.watres.2019.115208
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Engineering
dc.subject.mesh	Biofilms
dc.subject.mesh	Euryarchaeota
dc.subject.mesh	Iron
dc.subject.mesh	Methane
dc.subject.mesh	Sewage
dc.subject.mesh	Sulfides
dc.subject.mesh	Biofilms
dc.subject.mesh	Euryarchaeota
dc.subject.mesh	Sulfides
dc.subject.mesh	Iron
dc.subject.mesh	Methane
dc.subject.mesh	Sewage
dc.subject.mesh	Biofilms
dc.subject.mesh	Euryarchaeota
dc.subject.mesh	Iron
dc.subject.mesh	Methane
dc.subject.mesh	Sewage
dc.subject.mesh	Sulfides
dc.title	Rapid and strong biocidal effect of ferrate on sulfidogenic and methanogenic sewer biofilms.
dc.type	Journal Article
utslib.citation.volume	169
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	2021-03-23T03:40:11Z
pubs.publication-status	Published
pubs.volume	169

Abstract:

For the control of sulfide and methane in sewers, it is favorable to reduce their production rather than to remove them after generation. In this study, we revealed rapid and strong biocidal effect of ferrate (Fe(VI)) on sulfidogenic and methanogenic sewer biofilms, leading to control of sulfide and methane production in sewer. The inactivation of the microorganisms in sewer biofilms by Fe(VI) could be accomplished within 15 min for a single dosing event and the biocidal effect could be enhanced by applying pulse dosing strategy. The microbiological analysis showed that the key functional genes involved in sulfide and methane production, i.e. dsrA and mcrA, in the viable cells after Fe(VI) dosing were decreased substantially by 84.2% and 86.6%, respectively. Significant drops were also observed in the relative abundances of viable sulfide reducing bacteria (SRB) and methanogenic archaea (MA). The direct dosing of Fe(VI) into a sewer reactor led to instant and complete suppression of sulfidogenic and methanogenic activities, and the recovery of the activities resembled the regrowth of residual SRB and MA. The results of this study suggested the feasibility for developing an efficient and cost-effective sulfide and methane control strategy using Fe(VI).

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http://hdl.handle.net/10453/147470