Recovery of water and valuable metals using low pressure nanofiltration and sequential adsorption from acid mine drainage

Fonseka, C; Ryu, S; Naidu, G; Kandasamy, J; Vigneswaran, S

Recovery of water and valuable metals using low pressure nanofiltration and sequential adsorption from acid mine drainage

Fonseka, C Ryu, S Naidu, G Kandasamy, J

Vigneswaran, S

Permalink

Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Environmental Technology and Innovation, 2022, 28
Issue Date:: 2022-11-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Published versionAdobe PDF (991.52 kB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Fonseka, C
dc.contributor.author	Ryu, S
dc.contributor.author	Naidu, G
dc.contributor.author	Kandasamy, J https://orcid.org/0000-0003-0160-3519
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322
dc.date.accessioned	2023-04-11T03:46:20Z
dc.date.available	2023-04-11T03:46:20Z
dc.date.issued	2022-11-01
dc.identifier.citation	Environmental Technology and Innovation, 2022, 28
dc.identifier.issn	2352-1864
dc.identifier.issn	2352-1864
dc.identifier.uri	http://hdl.handle.net/10453/169554
dc.description.abstract	Acid mine drainage (AMD) contains an array of valuable resources such as Rare Earth Elements (REE) and Copper (Cu) which can be recovered along with fresh water. Low pressure nanofiltration with NF90 membrane was first studied to recover fresh water from synthetic AMD and concentration of dissolved metals for subsequent efficient selective recovery. Organic matter (OM) present in AMD was found to cause membrane fouling which resulted in significant flux decline. Powdered eggshell was investigated as a low-cost adsorbent for OM removal. The study showed that a 0.2 mg/l dose of powdered eggshell adsorbed 100% of OM and Fe with no significant loss of other dissolved metals. A steady permeate flux of 15.5 ± 0.2 L/m2h (LMH) was achieved for pre-treated AMD with a solute rejection rate of more than 98%. A chromium-based metal organic framework (MOF) modified with N- (phosphonomethyl) iminodiacetic acid (PMIDA) and an amine-grafted mesoporous silica (SBA15) material was synthesized for selective recovery of REE and Cu, respectively. The two adsorbents were used sequentially to selectively adsorb REE (91%) and Cu (90%) from pH adjusted concentrated feed. The formation of coordinating complexes with carboxylate and phosphonic groups on MOF was found to be the primary driving force for selective REE adsorption. Selective uptake of Cu onto amine-grafted SBA15 was due to the formation of strong chelating bonds between Cu and amine ligands. Both adsorbents remained structurally stable over 5 regeneration cycles. The findings here highlight the practical potential of membrane/adsorption hybrid systems for water and valuable metal (REE) recovery from AMD.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Environmental Technology and Innovation
dc.relation.isbasedon	10.1016/j.eti.2022.102753
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0502 Environmental Science and Management, 0907 Environmental Engineering, 1002 Environmental Biotechnology
dc.title	Recovery of water and valuable metals using low pressure nanofiltration and sequential adsorption from acid mine drainage
dc.type	Journal Article
utslib.citation.volume	28
utslib.for	0502 Environmental Science and Management
utslib.for	0907 Environmental Engineering
utslib.for	1002 Environmental Biotechnology
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	*
dc.date.updated	2023-04-11T03:46:19Z
pubs.publication-status	Published
pubs.volume	28

Abstract:

Acid mine drainage (AMD) contains an array of valuable resources such as Rare Earth Elements (REE) and Copper (Cu) which can be recovered along with fresh water. Low pressure nanofiltration with NF90 membrane was first studied to recover fresh water from synthetic AMD and concentration of dissolved metals for subsequent efficient selective recovery. Organic matter (OM) present in AMD was found to cause membrane fouling which resulted in significant flux decline. Powdered eggshell was investigated as a low-cost adsorbent for OM removal. The study showed that a 0.2 mg/l dose of powdered eggshell adsorbed 100% of OM and Fe with no significant loss of other dissolved metals. A steady permeate flux of 15.5 ± 0.2 L/m2h (LMH) was achieved for pre-treated AMD with a solute rejection rate of more than 98%. A chromium-based metal organic framework (MOF) modified with N- (phosphonomethyl) iminodiacetic acid (PMIDA) and an amine-grafted mesoporous silica (SBA15) material was synthesized for selective recovery of REE and Cu, respectively. The two adsorbents were used sequentially to selectively adsorb REE (91%) and Cu (90%) from pH adjusted concentrated feed. The formation of coordinating complexes with carboxylate and phosphonic groups on MOF was found to be the primary driving force for selective REE adsorption. Selective uptake of Cu onto amine-grafted SBA15 was due to the formation of strong chelating bonds between Cu and amine ligands. Both adsorbents remained structurally stable over 5 regeneration cycles. The findings here highlight the practical potential of membrane/adsorption hybrid systems for water and valuable metal (REE) recovery from AMD.

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

http://hdl.handle.net/10453/169554