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- Publisher Website: 10.2166/wst.2013.494
- Scopus: eid_2-s2.0-84892552159
- PMID: 24292480
- WOS: WOS:000330122400025
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Article: Surface coating with Ca(OH)2 for improvement of the transport of nanoscale zero-valent iron (nZVI) in porous media
Title | Surface coating with Ca(OH)2 for improvement of the transport of nanoscale zero-valent iron (nZVI) in porous media |
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Authors | |
Keywords | Calcium hydroxide (Ca(OH)2) Nano-core/shell structure Transportation in porous media Zero-valent iron (ZVI) |
Issue Date | 2013 |
Publisher | IWA Publishing. The Journal's web site is located at http://www.iwaponline.com/wst/default.htm |
Citation | Water Science and Technology, 2013, v. 68 n. 10, p. 2287-2293 How to Cite? |
Abstract | A novel thermal deposition method was developed to coat Ca(OH)2 on the surface of nanoscale zero-valent iron (nZVI). The nZVI particles with the Ca(OH)2 coating layer, nZVI/Ca(OH)2, had a clear core-shell structure based on the transmission electron microscopy observations, and the Ca(OH)2 shell was identified as an amorphous phase. The Ca(OH)2 coating shell would not only function as an effective protection layer for nZVI but also improve the mobility of nZVI in porous media for its use in environmental decontamination. A 10% Ca/Fe mass ratio was found to result in a proper thickness of the Ca(OH)2 shell on the nZVI surface. Based on the filtration tests in sand columns, the Ca(OH)2-based surface coating could greatly improve the mobility and transport of nZVI particles in porous media. In addition, batch experiments were conducted to evaluate the reactivity of Ca(OH)2-coated nZVI particles for the reduction of Cr(VI) and its removal from water. |
Persistent Identifier | http://hdl.handle.net/10722/202683 |
ISSN | 2023 Impact Factor: 2.5 2023 SCImago Journal Rankings: 0.554 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wei, CJ | en_US |
dc.contributor.author | Li, XY | en_US |
dc.date.accessioned | 2014-09-19T09:14:16Z | - |
dc.date.available | 2014-09-19T09:14:16Z | - |
dc.date.issued | 2013 | en_US |
dc.identifier.citation | Water Science and Technology, 2013, v. 68 n. 10, p. 2287-2293 | en_US |
dc.identifier.issn | 0273-1223 | - |
dc.identifier.uri | http://hdl.handle.net/10722/202683 | - |
dc.description.abstract | A novel thermal deposition method was developed to coat Ca(OH)2 on the surface of nanoscale zero-valent iron (nZVI). The nZVI particles with the Ca(OH)2 coating layer, nZVI/Ca(OH)2, had a clear core-shell structure based on the transmission electron microscopy observations, and the Ca(OH)2 shell was identified as an amorphous phase. The Ca(OH)2 coating shell would not only function as an effective protection layer for nZVI but also improve the mobility of nZVI in porous media for its use in environmental decontamination. A 10% Ca/Fe mass ratio was found to result in a proper thickness of the Ca(OH)2 shell on the nZVI surface. Based on the filtration tests in sand columns, the Ca(OH)2-based surface coating could greatly improve the mobility and transport of nZVI particles in porous media. In addition, batch experiments were conducted to evaluate the reactivity of Ca(OH)2-coated nZVI particles for the reduction of Cr(VI) and its removal from water. | - |
dc.language | eng | en_US |
dc.publisher | IWA Publishing. The Journal's web site is located at http://www.iwaponline.com/wst/default.htm | - |
dc.relation.ispartof | Water Science and Technology | en_US |
dc.rights | Water Science and Technology. Copyright © IWA Publishing. | - |
dc.rights | ©IWA Publishing 2013. The definitive peer-reviewed and edited version of this article is published in Water Science and Technology, 2013, v. 68 n. 10, p. 2287-2293 ; doi: 10.2166/wst.2013.494 and is available at www.iwapublishing.com | - |
dc.subject | Calcium hydroxide (Ca(OH)2) | - |
dc.subject | Nano-core/shell structure | - |
dc.subject | Transportation in porous media | - |
dc.subject | Zero-valent iron (ZVI) | - |
dc.subject.mesh | Calcium Hydroxide - chemistry | - |
dc.subject.mesh | Iron - chemistry | - |
dc.subject.mesh | Metal Nanoparticles - chemistry | - |
dc.subject.mesh | Porosity | - |
dc.title | Surface coating with Ca(OH)2 for improvement of the transport of nanoscale zero-valent iron (nZVI) in porous media | en_US |
dc.type | Article | en_US |
dc.identifier.email | Li, XY: xlia@hkucc.hku.hk | en_US |
dc.identifier.authority | Li, XY=rp00222 | en_US |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.2166/wst.2013.494 | - |
dc.identifier.pmid | 24292480 | - |
dc.identifier.scopus | eid_2-s2.0-84892552159 | - |
dc.identifier.hkuros | 236410 | en_US |
dc.identifier.volume | 68 | en_US |
dc.identifier.issue | 10 | en_US |
dc.identifier.spage | 2287 | en_US |
dc.identifier.epage | 2293 | en_US |
dc.identifier.isi | WOS:000330122400025 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0273-1223 | - |