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Article: Preparation and evaluation of a magnetite-doped activated carbon fiber for enhanced arsenic removal
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TitlePreparation and evaluation of a magnetite-doped activated carbon fiber for enhanced arsenic removal
 
AuthorsZhang, S1 2
Li, Xy1
Chen, JP3
 
KeywordsAdsorption capability
Adsorption capacities
Arsenic removal
As removal
Drinking water
 
Issue Date2010
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/carbon
 
CitationCarbon, 2010, v. 48 n. 1, p. 60-67 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.carbon.2009.08.030
 
AbstractTo enhance As(V) removal, an activated carbon fiber (ACF) based adsorbent was fabricated by impregnation of nano-sized magnetite to the surface of ACF with chitosan as the coating support. The As(V) adsorption capacity of the modified ACF (MACF) was approximately eight times of that of the raw ACF (RACF). Even at As(V) concentrations lower than 10 μg L-1, the MACF exhibited a considerably high adsorption capacity to As(V), whereas the RACF was ineffective even at an As(V) concentration ten times higher to 10 μg L-1. The MACF was able to reduce As(V) concentration below its maximum contaminant level regulated by the US EPA for drinking water in a wide pH range without formation of the more poisonous As(III). Kinetic experiments indicated that the diffusion of As(V) within the pores of the MACF was more rapid than that of the RACF and that the surface reaction was the dominant step in the adsorption of As(V) onto the MACF. Compared with the RACF, the MACF had a wider applicable pH range from 2 to 8 for the As(V) uptake. Besides enhanced As(V) uptake, the MACF maintained its high adsorption capability to organic contaminants, such as phenol and humic acid. © 2009 Elsevier Ltd. All rights reserved.
 
ISSN0008-6223
2012 Impact Factor: 5.868
2012 SCImago Journal Rankings: 2.183
 
DOIhttp://dx.doi.org/10.1016/j.carbon.2009.08.030
 
ISI Accession Number IDWOS:000272018800009
Funding AgencyGrant Number
National University of SingaporeR-288-000-023-112
R279-000-175-112
Hong Kong SAR Government of ChinaHKU7120/03E
National Natural Science Foundation of China50728806
Funding Information:

The financial support provided to JP Chen and SJ Zhang by the National University of Singapore (R-288-000-023-112 and R279-000-175-112) is appreciated. This research was partially supported by the Research Grants Council of the Hong Kong SAR Government of China under Grant HKU7120/03E and by the National Natural Science Foundation of China under the Grant No. 50728806.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhang, S
 
dc.contributor.authorLi, Xy
 
dc.contributor.authorChen, JP
 
dc.date.accessioned2010-12-23T08:32:52Z
 
dc.date.available2010-12-23T08:32:52Z
 
dc.date.issued2010
 
dc.description.abstractTo enhance As(V) removal, an activated carbon fiber (ACF) based adsorbent was fabricated by impregnation of nano-sized magnetite to the surface of ACF with chitosan as the coating support. The As(V) adsorption capacity of the modified ACF (MACF) was approximately eight times of that of the raw ACF (RACF). Even at As(V) concentrations lower than 10 μg L-1, the MACF exhibited a considerably high adsorption capacity to As(V), whereas the RACF was ineffective even at an As(V) concentration ten times higher to 10 μg L-1. The MACF was able to reduce As(V) concentration below its maximum contaminant level regulated by the US EPA for drinking water in a wide pH range without formation of the more poisonous As(III). Kinetic experiments indicated that the diffusion of As(V) within the pores of the MACF was more rapid than that of the RACF and that the surface reaction was the dominant step in the adsorption of As(V) onto the MACF. Compared with the RACF, the MACF had a wider applicable pH range from 2 to 8 for the As(V) uptake. Besides enhanced As(V) uptake, the MACF maintained its high adsorption capability to organic contaminants, such as phenol and humic acid. © 2009 Elsevier Ltd. All rights reserved.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationCarbon, 2010, v. 48 n. 1, p. 60-67 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.carbon.2009.08.030
 
dc.identifier.citeulike5645155
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.carbon.2009.08.030
 
dc.identifier.epage67
 
dc.identifier.hkuros178449
 
dc.identifier.isiWOS:000272018800009
Funding AgencyGrant Number
National University of SingaporeR-288-000-023-112
R279-000-175-112
Hong Kong SAR Government of ChinaHKU7120/03E
National Natural Science Foundation of China50728806
Funding Information:

The financial support provided to JP Chen and SJ Zhang by the National University of Singapore (R-288-000-023-112 and R279-000-175-112) is appreciated. This research was partially supported by the Research Grants Council of the Hong Kong SAR Government of China under Grant HKU7120/03E and by the National Natural Science Foundation of China under the Grant No. 50728806.

 
dc.identifier.issn0008-6223
2012 Impact Factor: 5.868
2012 SCImago Journal Rankings: 2.183
 
dc.identifier.issue1
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-70350026666
 
dc.identifier.spage60
 
dc.identifier.urihttp://hdl.handle.net/10722/129128
 
dc.identifier.volume48
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/carbon
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofCarbon
 
dc.relation.referencesReferences in Scopus
 
dc.subjectAdsorption capability
 
dc.subjectAdsorption capacities
 
dc.subjectArsenic removal
 
dc.subjectAs removal
 
dc.subjectDrinking water
 
dc.titlePreparation and evaluation of a magnetite-doped activated carbon fiber for enhanced arsenic removal
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. Clemson University
  3. National University of Singapore