Please use this identifier to cite or link to this item: https://doi.org/10.1021/ie901289e
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dc.titleMechanistic insights into copper removal by pyrolytic tire char through equilibrium studies
dc.contributor.authorQuek, A.
dc.contributor.authorZhao, X.-S.
dc.contributor.authorBalasubramanian, R.
dc.date.accessioned2014-10-08T08:32:47Z
dc.date.available2014-10-08T08:32:47Z
dc.date.issued2010-05-19
dc.identifier.citationQuek, A., Zhao, X.-S., Balasubramanian, R. (2010-05-19). Mechanistic insights into copper removal by pyrolytic tire char through equilibrium studies. Industrial and Engineering Chemistry Research 49 (10) : 4528-4534. ScholarBank@NUS Repository. https://doi.org/10.1021/ie901289e
dc.identifier.issn08885885
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/87547
dc.description.abstractThis study showed that copper(II) can be removed from aqueous solution by activated pyrolytic tire char in three mechanistically distinct ways. On the basis of equilibrium studies, the mechanisms involved in the adsorptive removal of copper(II), namely, precipitation, surface adsorption, and pore diffusion, were elucidated. Precipitation of copper(II) resulted from changes in the solution pH to neutral levels. This was attributed to amphoteric zinc oxide on the char surface, formed during production of the pyrolytic char. Surface adsorption was revealed by X-ray photoelectron spectroscopy data, which showed a significant increase in copper(II) on the char surface after shaking in the copper solution. This surface adsorption took place despite the relatively low surface area and porosity of the char. However, some cracks and fissures were found to exist in the char that can trap small species such as copper ions. These trapped copper species were partially recovered by microwave-assisted acid digestion of the char. © 2010 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/ie901289e
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1021/ie901289e
dc.description.sourcetitleIndustrial and Engineering Chemistry Research
dc.description.volume49
dc.description.issue10
dc.description.page4528-4534
dc.description.codenIECRE
dc.identifier.isiut000277443100003
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