Electron shuttles enhance phenanthrene removal in constructed wetlands filled with manganese oxides-coated sands

Shen, X; Zhang, J; Xie, H; Sun, B; Liang, S; Wu, H; Hu, Z; Ngo, HH; Guo, W; Lu, J

Electron shuttles enhance phenanthrene removal in constructed wetlands filled with manganese oxides-coated sands

Shen, X Zhang, J Xie, H Sun, B Liang, S Wu, H Hu, Z Ngo, HH Guo, W

Lu, J

Permalink

Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Chemical Engineering Journal, 2021, 426, pp. 131755-131755
Issue Date:: 2021-12-15

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

The embargo period expires on 1 Dec 2023

Adobe PDF

Download Accepted versionAdobe PDF (3.94 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Shen, X
dc.contributor.author	Zhang, J
dc.contributor.author	Xie, H
dc.contributor.author	Sun, B
dc.contributor.author	Liang, S
dc.contributor.author	Wu, H
dc.contributor.author	Hu, Z
dc.contributor.author	Ngo, HH
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858
dc.contributor.author	Lu, J
dc.date.accessioned	2021-12-06T06:04:34Z
dc.date.available	2021-12-06T06:04:34Z
dc.date.issued	2021-12-15
dc.identifier.citation	Chemical Engineering Journal, 2021, 426, pp. 131755-131755
dc.identifier.issn	1385-8947
dc.identifier.uri	http://hdl.handle.net/10453/152148
dc.description.abstract	Mn oxides could realize persistent organic pollutants (POPs) removal through the cycle of Mn between Mn(II) and biogenic Mn oxides in constructed wetlands (CWs) filled with Mn oxides. However, the inefficient cycle of Mn caused by the limited oxidation ability of Mn oxides inhibited its effective degradation of POPs. Ruthenium (Ru) and 2,2′-azino-bis(3-ethylbenzothiazoline)-6-sulfonate (ABTS) could act as electron shuttles in catalytic Mn oxides oxidation process. In this study, phenanthrene (PHE) was selected as a typical POP and biochar (BC) supported Ru (Ru/BC) and ABTS (ABTS/BC) were induced in CWs with Mn oxides (birnessite). The removal efficiencies of PHE in CWs with Ru/BC and ABTS/BC reached 94.61% and 95.51%, higher than the control (79.91%). ABTS performed best for enhancing Mn cycle based on the results of highest oxidation removal capacity and relative abundance of Mn-oxidizing bacteria. What's more, the addition of Ru/BC contributed to the best adsorption ability and highest relative abundance of PHE degrading bacteria.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Chemical Engineering Journal
dc.relation.isbasedon	10.1016/j.cej.2021.131755
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Chemical Engineering
dc.title	Electron shuttles enhance phenanthrene removal in constructed wetlands filled with manganese oxides-coated sands
dc.type	Journal Article
utslib.citation.volume	426
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
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	open_access	*
utslib.copyright.embargo	2023-12-01T00:00:00+1000Z
dc.date.updated	2021-12-06T06:04:33Z
pubs.publication-status	Accepted
pubs.volume	426

Abstract:

Mn oxides could realize persistent organic pollutants (POPs) removal through the cycle of Mn between Mn(II) and biogenic Mn oxides in constructed wetlands (CWs) filled with Mn oxides. However, the inefficient cycle of Mn caused by the limited oxidation ability of Mn oxides inhibited its effective degradation of POPs. Ruthenium (Ru) and 2,2′-azino-bis(3-ethylbenzothiazoline)-6-sulfonate (ABTS) could act as electron shuttles in catalytic Mn oxides oxidation process. In this study, phenanthrene (PHE) was selected as a typical POP and biochar (BC) supported Ru (Ru/BC) and ABTS (ABTS/BC) were induced in CWs with Mn oxides (birnessite). The removal efficiencies of PHE in CWs with Ru/BC and ABTS/BC reached 94.61% and 95.51%, higher than the control (79.91%). ABTS performed best for enhancing Mn cycle based on the results of highest oxidation removal capacity and relative abundance of Mn-oxidizing bacteria. What's more, the addition of Ru/BC contributed to the best adsorption ability and highest relative abundance of PHE degrading bacteria.

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

http://hdl.handle.net/10453/152148