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Quantification of activated carbon contents in soils and sediments using chemothermal and wet oxidation methods
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2009 (Engelska)Ingår i: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 157, nr 12, s. 3465-3470Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Activated carbon (AC) strongly sorbs organic pollutants and can be used for remediation of soils and sediments. A method for AC quantification is essential to monitor AC (re)distribution. Since AC is black carbon (BC), two methods for BC quantification were tested for AC mixed in different soils and sediments: i) chemothermal oxidation (CTO) at a range of temperatures and ii) wet-chemical oxidation with a potassium dichromate/sulfuric acid solution. For three soils, the amount of AC was accurately determined by CTO at 375 degrees C. For two sediments, however, much of the AC disappeared during combustion at 375 degrees C, which could probably be explained by catalytic effects by sediment constituents. CTO at lower temperatures (325-350 degrees C) was a feasible alternative for one of the sediments. Wet oxidation effectively functioned for AC quantification in sediments, with almost complete AC recovery (81-92%) and low remaining amounts of native organic carbon (5-16%).

Ort, förlag, år, upplaga, sidor
2009. Vol. 157, nr 12, s. 3465-3470
Nyckelord [en]
activated carbon, bioavailability, black carbon, organic-matter, pah, pcb, quantification, sediment, soil, soot, sorption
Nationell ämneskategori
Geovetenskap och miljövetenskap
Identifikatorer
URN: urn:nbn:se:su:diva-34933DOI: 10.1016/j.envpol.2009.06.015ISI: 000272334500038ISBN: 0269-7491 (tryckt)OAI: oai:DiVA.org:su-34933DiVA, id: diva2:285993
Tillgänglig från: 2010-01-13 Skapad: 2010-01-13 Senast uppdaterad: 2022-02-25Bibliografiskt granskad

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Cornelissen, Gerard

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Cornelissen, Gerard
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Institutionen för tillämpad miljövetenskap (ITM)
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Environmental Pollution
Geovetenskap och miljövetenskap

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