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Article: Preparation and evaluation of a magnetite-doped activated carbon fiber for enhanced arsenic removal
Title | Preparation and evaluation of a magnetite-doped activated carbon fiber for enhanced arsenic removal | ||||||||
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Authors | |||||||||
Keywords | Adsorption capability Adsorption capacities Arsenic removal As removal Drinking water | ||||||||
Issue Date | 2010 | ||||||||
Publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/carbon | ||||||||
Citation | Carbon, 2010, v. 48 n. 1, p. 60-67 How to Cite? | ||||||||
Abstract | To 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. | ||||||||
Persistent Identifier | http://hdl.handle.net/10722/129128 | ||||||||
ISSN | 2023 Impact Factor: 10.5 2023 SCImago Journal Rankings: 2.171 | ||||||||
ISI Accession Number ID |
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. | ||||||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhang, S | en_HK |
dc.contributor.author | Li, Xy | en_HK |
dc.contributor.author | Chen, JP | en_HK |
dc.date.accessioned | 2010-12-23T08:32:52Z | - |
dc.date.available | 2010-12-23T08:32:52Z | - |
dc.date.issued | 2010 | en_HK |
dc.identifier.citation | Carbon, 2010, v. 48 n. 1, p. 60-67 | en_HK |
dc.identifier.issn | 0008-6223 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/129128 | - |
dc.description.abstract | To 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. | en_HK |
dc.language | eng | en_US |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/carbon | en_HK |
dc.relation.ispartof | Carbon | en_HK |
dc.subject | Adsorption capability | - |
dc.subject | Adsorption capacities | - |
dc.subject | Arsenic removal | - |
dc.subject | As removal | - |
dc.subject | Drinking water | - |
dc.title | Preparation and evaluation of a magnetite-doped activated carbon fiber for enhanced arsenic removal | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-6223&volume=48&issue=1&spage=60&epage=67&date=2010&atitle=Preparation+and+evaluation+of+a+magnetite-doped+activated+carbon+fiber+for+enhanced+arsenic+removal | - |
dc.identifier.email | Li, Xy:xlia@hkucc.hku.hk | en_HK |
dc.identifier.authority | Li, Xy=rp00222 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.carbon.2009.08.030 | en_HK |
dc.identifier.scopus | eid_2-s2.0-70350026666 | en_HK |
dc.identifier.hkuros | 178449 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-70350026666&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 48 | en_HK |
dc.identifier.issue | 1 | en_HK |
dc.identifier.spage | 60 | en_HK |
dc.identifier.epage | 67 | en_HK |
dc.identifier.isi | WOS:000272018800009 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Zhang, S=7409371575 | en_HK |
dc.identifier.scopusauthorid | Li, Xy=26642887900 | en_HK |
dc.identifier.scopusauthorid | Chen, JP=25649179800 | en_HK |
dc.identifier.citeulike | 5645155 | - |
dc.identifier.issnl | 0008-6223 | - |