Palladium Recovery through Membrane Capacitive Deionization from Metal Plating Wastewater

Kim, DI; Gwak, G; Dorji, P; He, D; Phuntsho, S; Hong, S; Shon, H

Palladium Recovery through Membrane Capacitive Deionization from Metal Plating Wastewater

Kim, DI Gwak, G Dorji, P

He, D Phuntsho, S

Hong, S Shon, H

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Publication Type:: Journal Article
Citation:: ACS Sustainable Chemistry and Engineering, 2018, 6 (2), pp. 1692 - 1701
Issue Date:: 2018-02-05

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Field	Value	Language
dc.contributor.author	Kim, DI	en_US
dc.contributor.author	Gwak, G	en_US
dc.contributor.author	Dorji, P https://orcid.org/0000-0003-0973-7773	en_US
dc.contributor.author	He, D	en_US
dc.contributor.author	Phuntsho, S https://orcid.org/0000-0002-3917-3916	en_US
dc.contributor.author	Hong, S	en_US
dc.contributor.author	Shon, H https://orcid.org/0000-0002-3777-7169	en_US
dc.date.issued	2018-02-05	en_US
dc.identifier.citation	ACS Sustainable Chemistry and Engineering, 2018, 6 (2), pp. 1692 - 1701	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131952
dc.description.abstract	© 2017 American Chemical Society. The potential application of membrane capacitive deionization (MCDI) for recovery of palladium (Pd) ions from catalyst solution wastewater generated from the plating industry was investigated in this study. Several major issues were explored in this work to verify the suitability of MCDI for Pd recovery from a practical perspective: adsorption and desorption efficiencies, desorption mechanisms into high concentration of Pd concentrate, and its sustainability in long-term operation. The lab-scale MCDI operation achieved satisfactory and highly competitive Pd removal (99.07-99.94% removal with 1.42-1.52 of Pd selectivity over ammonium ions) showing that Pd can be effectively collected from plating industry wastewater. A high concentration of Pd concentrate (64.77 and 919.44 mg/L of Pd from the 10 and 100 mg/L Pd containing catalyst solution, respectively) was obtained through successive five operation cycles of adsorption/desorption phases. However, it is significant to note that the desorption efficiency was inversely proportional to the concentration of Pd concentrate which is likely due to the Pd ions discharged from carbon electrode toward Pd solution against the enhanced concentration gradient. The long-term operation results suggest that scaling could reduce the MCDI efficiency during Pd recovery (0.17% decrease in Pd removal for every cycle on average) and hence may require an adequate electrode cleaning regime.	en_US
dc.relation	http://purl.org/au-research/grants/arc/FT140101208
dc.relation.ispartof	ACS Sustainable Chemistry and Engineering	en_US
dc.relation.isbasedon	10.1021/acssuschemeng.7b02923	en_US
dc.title	Palladium Recovery through Membrane Capacitive Deionization from Metal Plating Wastewater	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	6	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0910 Manufacturing Engineering	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	0502 Environmental Science and Management	en_US
pubs.embargo.period	Not known	en_US
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
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	open_access
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	6	en_US

Abstract:

© 2017 American Chemical Society. The potential application of membrane capacitive deionization (MCDI) for recovery of palladium (Pd) ions from catalyst solution wastewater generated from the plating industry was investigated in this study. Several major issues were explored in this work to verify the suitability of MCDI for Pd recovery from a practical perspective: adsorption and desorption efficiencies, desorption mechanisms into high concentration of Pd concentrate, and its sustainability in long-term operation. The lab-scale MCDI operation achieved satisfactory and highly competitive Pd removal (99.07-99.94% removal with 1.42-1.52 of Pd selectivity over ammonium ions) showing that Pd can be effectively collected from plating industry wastewater. A high concentration of Pd concentrate (64.77 and 919.44 mg/L of Pd from the 10 and 100 mg/L Pd containing catalyst solution, respectively) was obtained through successive five operation cycles of adsorption/desorption phases. However, it is significant to note that the desorption efficiency was inversely proportional to the concentration of Pd concentrate which is likely due to the Pd ions discharged from carbon electrode toward Pd solution against the enhanced concentration gradient. The long-term operation results suggest that scaling could reduce the MCDI efficiency during Pd recovery (0.17% decrease in Pd removal for every cycle on average) and hence may require an adequate electrode cleaning regime.

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http://hdl.handle.net/10453/131952