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Sorption of perfluorinated compounds from contaminated water to activated carbon
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för tillämpad miljövetenskap (ITM).
2010 (Engelska)Ingår i: Journal of Soils and Sediments, ISSN 1439-0108, E-ISSN 1614-7480, Vol. 10, nr 2, s. 179-185Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Perfluorinated compounds (PFC) are toxic and bioaccumulative compounds that are ubiquitous in the environment. It is important to develop effective techniques to remove PFC from water. This study is the first to investigate sorption of PFC to activated carbon (AC) at environmentally relevant nanogram per liter concentrations. Batch AC sorption isotherms were measured for water from a contaminated groundwater well, for three perfluorosulfonates and five perfluoroacetic acids. For perfluorooctane sulfonate and perfluorooctanoic acid Freundlich sorption coefficients, log K (iF), for powdered activated carbon (PAC) were 4.0 and 3.8 (ng/g)(ng/L)(-n) , respectively, and for granular activated carbon (GAC) were 2.7 and 2.3 (ng/g)(ng/L)(-n) , respectively. Sorption was nonlinear, with Freundlich n coefficients generally around 0.5. The K (iF) on both GAC and PAC were PFC chain-length dependant, with increasing number of carbon yielding increasing K (iF). This chain-length dependence appeared stronger for perfluorosulfonates than for perfluoroacetic acids. Tests with short (10 min) adsorption times still yielded substantial PFC removal (20-40% for GAC, 60-90% for PAC) and revealed that AC is probably suitable for PFC removal in flow-through systems. A perfluorinated polymer, Teflon, was also tested as a PFC removal agent but proved not to be effective for PFC-contaminated water purification.

Ort, förlag, år, upplaga, sidor
2010. Vol. 10, nr 2, s. 179-185
Nyckelord [en]
Activated carbon, Contaminated water, Isotherms, Perfluorinated compounds
Nationell ämneskategori
Geovetenskap och miljövetenskap
Forskningsämne
tillämpad miljövetenskap
Identifikatorer
URN: urn:nbn:se:su:diva-50055DOI: 10.1007/s11368-009-0172-zISI: 000274853100005OAI: oai:DiVA.org:su-50055DiVA, id: diva2:382755
Anmärkning
authorCount :4Tillgänglig från: 2011-01-03 Skapad: 2010-12-21 Senast uppdaterad: 2022-02-24Bibliografiskt granskad

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Cornelissen, Gerard

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Cornelissen, Gerard
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Journal of Soils and Sediments
Geovetenskap och miljövetenskap

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