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Lead (Pb) sorption to hydrophobic and hydrophilic zeolites in the presence and absence of MTBE

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dc.contributor.authorZhang, Yunhui
dc.contributor.authorAlessi, Daniel S.
dc.contributor.authorChen, Ning
dc.contributor.authorLuo, Mina
dc.contributor.authorHao, Weiduo
dc.contributor.authorAlam, Md. Samrat
dc.contributor.authorFlynn, Shannon L.
dc.contributor.authorKenney, Janice
dc.contributor.authorKonhauser, Kurt O.
dc.contributor.authorOk, Yong Sik
dc.contributor.authorAl-Tabbaa, Abir
dc.date.accessioned2024-03-07T22:01:41Z
dc.date.available2024-03-07T22:01:41Z
dc.date.issued2021
dc.description.abstractThe co-contamination of the environment by metals and organic pollutants is a significant concern, and one such example is lead (Pb) and methyl tert-butyl ether (MTBE) due to their historic use as fuel additives. Clinoptilolite is an abundant and efficient zeolite for metal removal, but the potential interference of co-existing organic pollutants on metal removal, such as MTBE, have rarely been discussed. In this study, a combination of batch sorption tests and synchrotron-based X-ray absorption spectroscopic analyses were employed to investigate Pb sorption mechanism(s) onto clinoptilolite in the presence and absence of MTBE. A comparison was made to synthetic ZSM-5 zeolite to gain insights into differences in Pb binding mechanisms between hydrophilic (clinoptilolite) and hydrophobic (ZSM-5) zeolites. Site occupancy and surface precipitation contributed equally to Pb removal by clinoptilolite, while surface precipitation was the main Pb removal mechanism for ZSM-5 followed by site occupancy. Despite the negligible effect of 100 mg/L MTBE on observed Pb removal from solution by both zeolites, a surface-embedded Pb removal mechanism, through the Mg site on clinoptilolite surface, arises when MTBE is present. This study provides an understanding of atomic-level Pb uptake mechanisms on zeolites, with and without co-contaminating MTBE, which aids in their application in water treatment at co-contaminated sites.
dc.description.urihttps://library.macewan.ca/cgi-bin/SFX/url.pl/E7A
dc.identifier.citationZhang, Y., Alessi, D. S., Chen, N., Luo, M., Hao, W., Alam, M. S., Flynn, S. L., Kenney, J. P. L., Konhauser, K. O., Ok, Y. S., & Al-Tabbaa, A. (2021). Lead (Pb) sorption to hydrophobic and hydrophilic zeolites in the presence and absence of MTBE. Journal of Hazardous Materials, 420, N.PAG. https://doi.org/10.1016/j.jhazmat.2021.126528
dc.identifier.doihttps://doi.org/10.1016/j.jhazmat.2021.126528
dc.identifier.urihttps://hdl.handle.net/20.500.14078/3461
dc.language.isoen
dc.rightsAll Rights Reserved
dc.subjectclean water and sanitation
dc.subjectsorbent
dc.subjectsurface coating
dc.subjectzeolite
dc.subjectadvanced spectroscopic analysis
dc.titleLead (Pb) sorption to hydrophobic and hydrophilic zeolites in the presence and absence of MTBEen
dc.typeArticle

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Department of Physical Sciences