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Article: Influence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmite

TitleInfluence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmite
Authors
KeywordsPFOS
PFOA
Adsorption
Electrostatic interaction
Ligand exchange
Issue Date2012
PublisherWorld Academy of Science, Engineering and Technology (WASET). The Journal's web site is located at http://www.waset.org/publications.php
Citation
World Academy of Science, Engineering & Technology, 2012, v. 69, p. 1287-1291 How to Cite?
AbstractThe persistent nature of perfluorochemicals (PFCs) has attracted global concern in recent years. Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) are the most commonly found PFC compounds, and thus their fate and transport play key roles in PFC distribution in the natural environment. The kinetic behavior of PFOS or PFOA on boehmite consists of a fast adsorption process followed by a slow adsorption process which may be attributed to the slow transport of PFOS or PFOA into the boehmite pore surface. The adsorption isotherms estimated the maximum adsorption capacities of PFOS and PFOA on boehmite as 0.877 μg/m2 and 0.633 μg/m2, with the difference primarily due to their different functional groups. The increase of solution pH led to a moderate decrease of PFOS and PFOA adsorption, owing to the increase of ligand exchange reactions and the decrease of electrostatic interactions. The presence of NaCl in solution demonstrated negative effects for PFOS and PFOA adsorption on boehmite surfaces, with potential mechanisms being electrical double layer compression, competitive adsorption of chloride.
Persistent Identifierhttp://hdl.handle.net/10722/188738
ISSN
2014 SCImago Journal Rankings: 0.133

 

DC FieldValueLanguage
dc.contributor.authorWang, F-
dc.contributor.authorShih, K-
dc.date.accessioned2013-09-06T04:35:00Z-
dc.date.available2013-09-06T04:35:00Z-
dc.date.issued2012-
dc.identifier.citationWorld Academy of Science, Engineering & Technology, 2012, v. 69, p. 1287-1291-
dc.identifier.issn2010-376X-
dc.identifier.urihttp://hdl.handle.net/10722/188738-
dc.description.abstractThe persistent nature of perfluorochemicals (PFCs) has attracted global concern in recent years. Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) are the most commonly found PFC compounds, and thus their fate and transport play key roles in PFC distribution in the natural environment. The kinetic behavior of PFOS or PFOA on boehmite consists of a fast adsorption process followed by a slow adsorption process which may be attributed to the slow transport of PFOS or PFOA into the boehmite pore surface. The adsorption isotherms estimated the maximum adsorption capacities of PFOS and PFOA on boehmite as 0.877 μg/m2 and 0.633 μg/m2, with the difference primarily due to their different functional groups. The increase of solution pH led to a moderate decrease of PFOS and PFOA adsorption, owing to the increase of ligand exchange reactions and the decrease of electrostatic interactions. The presence of NaCl in solution demonstrated negative effects for PFOS and PFOA adsorption on boehmite surfaces, with potential mechanisms being electrical double layer compression, competitive adsorption of chloride.-
dc.languageeng-
dc.publisherWorld Academy of Science, Engineering and Technology (WASET). The Journal's web site is located at http://www.waset.org/publications.php-
dc.relation.ispartofWorld Academy of Science, Engineering & Technology-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPFOS-
dc.subjectPFOA-
dc.subjectAdsorption-
dc.subjectElectrostatic interaction-
dc.subjectLigand exchange-
dc.titleInfluence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmiteen_US
dc.typeArticleen_US
dc.identifier.emailWang, F: wf1984@hku.hk-
dc.identifier.emailShih, K: kshih@hkucc.hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros222363-
dc.identifier.hkuros222364-
dc.identifier.volume69-
dc.identifier.spage1287-
dc.identifier.epage1291-
dc.publisher.placeTurkey-

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