Pyrite (FeS2)-supported ultrafiltration system for removal of mercury (II) from water

Han, DS; Solayman, KMD; Shon, HK; Abdel-Wahab, A

Pyrite (FeS2)-supported ultrafiltration system for removal of mercury (II) from water

Han, DS Solayman, KMD Shon, HK Abdel-Wahab, A

Permalink

Publisher:: Springer
Publication Type:: Journal Article
Citation:: Emergent Materials, 2021, 4, (5), pp. 1441-1453
Issue Date:: 2021-08-13

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download full textAdobe PDF (2.04 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Han, DS
dc.contributor.author	Solayman, KMD
dc.contributor.author	Shon, HK
dc.contributor.author	Abdel-Wahab, A
dc.date.accessioned	2022-05-03T03:35:45Z
dc.date.available	2022-05-03T03:35:45Z
dc.date.issued	2021-08-13
dc.identifier.citation	Emergent Materials, 2021, 4, (5), pp. 1441-1453
dc.identifier.issn	2522-5731
dc.identifier.issn	2522-5731
dc.identifier.uri	http://hdl.handle.net/10453/156926
dc.description.abstract	This study investigated the Hg(II) removal efficiencies of the reactive adsorbent membrane (RAM) hybrid filtration process, a removal process that produces stable final residuals. The reaction mechanism between Hg(II) and pyrite and the rejection of the solids over time were characterized with respect to flux decline, pH change, and Hg and Fe concentration in permeate water. Effects of the presence of anions (Cl−, SO42−, NO3−) or humic acid (HA) on the rejection of the Hg(II)-contacted pyrite were studied. The presence of both HA and Hg(II) increased the rate of flux decline due to the formation of irreversible gel-like compact cake layers as shown in the experimental data and modeling related to the flux decline and the SEM images. Stability experiments of the final residuals retained on the membrane using a thiosulfate solution (Na2S2O3) show that the Hg(II)-laden solids were very stable due to little or no detection of Hg(II) in the permeate water. Experiment on the possibility of continuously removing Hg(II) by reusing the Hg/pyrite-laden membrane shows that almost all Hg(II) was adsorbed onto the pyrite surface regardless of the presence of salts or HA, and the Hg(II)-contacted pyrite residuals were completely rejected by the DE/UF system. Therefore, a membrane filter containing pyrite-Hg(II) could provide another reactive cake layer capable of further removal of Hg(II) without post-chemical treatment for reuse.
dc.language	en
dc.publisher	Springer
dc.relation	Industry-Academic Cooperation Foundation
dc.relation.ispartof	Emergent Materials
dc.relation.isbasedon	10.1007/s42247-021-00282-7
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Pyrite (FeS2)-supported ultrafiltration system for removal of mercury (II) from water
dc.type	Journal Article
utslib.citation.volume	4
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	*
pubs.consider-herdc	false
dc.date.updated	2022-05-03T03:35:44Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	4
utslib.citation.issue	5

Abstract:

This study investigated the Hg(II) removal efficiencies of the reactive adsorbent membrane (RAM) hybrid filtration process, a removal process that produces stable final residuals. The reaction mechanism between Hg(II) and pyrite and the rejection of the solids over time were characterized with respect to flux decline, pH change, and Hg and Fe concentration in permeate water. Effects of the presence of anions (Cl−, SO42−, NO3−) or humic acid (HA) on the rejection of the Hg(II)-contacted pyrite were studied. The presence of both HA and Hg(II) increased the rate of flux decline due to the formation of irreversible gel-like compact cake layers as shown in the experimental data and modeling related to the flux decline and the SEM images. Stability experiments of the final residuals retained on the membrane using a thiosulfate solution (Na2S2O3) show that the Hg(II)-laden solids were very stable due to little or no detection of Hg(II) in the permeate water. Experiment on the possibility of continuously removing Hg(II) by reusing the Hg/pyrite-laden membrane shows that almost all Hg(II) was adsorbed onto the pyrite surface regardless of the presence of salts or HA, and the Hg(II)-contacted pyrite residuals were completely rejected by the DE/UF system. Therefore, a membrane filter containing pyrite-Hg(II) could provide another reactive cake layer capable of further removal of Hg(II) without post-chemical treatment for reuse.

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

http://hdl.handle.net/10453/156926