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Article: Influence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmite
Title | Influence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmite |
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Authors | |
Keywords | PFOS PFOA Adsorption Electrostatic interaction Ligand exchange |
Issue Date | 2012 |
Publisher | World 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? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/188738 |
ISSN |
DC Field | Value | Language |
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dc.contributor.author | Wang, F | - |
dc.contributor.author | Shih, K | - |
dc.date.accessioned | 2013-09-06T04:35:00Z | - |
dc.date.available | 2013-09-06T04:35:00Z | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | World Academy of Science, Engineering & Technology, 2012, v. 69, p. 1287-1291 | - |
dc.identifier.issn | 2010-376X | - |
dc.identifier.uri | http://hdl.handle.net/10722/188738 | - |
dc.description.abstract | The 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.language | eng | - |
dc.publisher | World Academy of Science, Engineering and Technology (WASET). The Journal's web site is located at http://www.waset.org/publications.php | - |
dc.relation.ispartof | World Academy of Science, Engineering & Technology | - |
dc.subject | PFOS | - |
dc.subject | PFOA | - |
dc.subject | Adsorption | - |
dc.subject | Electrostatic interaction | - |
dc.subject | Ligand exchange | - |
dc.title | Influence of Solution Chemistry on Adsorption of Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) on Boehmite | en_US |
dc.type | Article | en_US |
dc.identifier.email | Wang, F: wf1984@hku.hk | - |
dc.identifier.email | Shih, K: kshih@hkucc.hku.hk | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.hkuros | 222363 | - |
dc.identifier.hkuros | 222364 | - |
dc.identifier.volume | 69 | - |
dc.identifier.spage | 1287 | - |
dc.identifier.epage | 1291 | - |
dc.publisher.place | Turkey | - |