Impact of activated charcoal on the mineralisation of C-14-phenanthrene in soils

Rhodes, Angela H. and McAllister, Laura E. and Chen, Rongrong and Semple, Kirk T. (2010) Impact of activated charcoal on the mineralisation of C-14-phenanthrene in soils. Chemosphere, 79 (4). pp. 463-469. ISSN 0045-6535

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Abstract

The development of phenanthrene catabolism in four soils amended with varying concentrations of activated charcoal (AC) (0%, 0.1%, 1% and 5%), a type of black carbon, was investigated. Mineralisation of I phenanthrene was monitored after 1, 25, 50 and 100 d soil-PAH contact time; lag phases, rates and extents of mineralisation of the C-14-phenanthrene to (CO2)-C-14 were determined. At concentrations >0.1% AC rates and extents of mineralisation were reduced by more than 99%. This revealed that the presence of >0.1% AC in soils may substantially diminish the rate at which the catabolic activity of indigenous soil microflora develops in contaminated soil. Soil C. which had the highest organic carbon (OC) content, consistently exhibited the highest extents of degradation. It is suggested that, in accordance with other researchers, OC may have blocked available phenanthrene sorption sites. This enhanced phenanthrene availability ultimately facilitated a greater level of catabolic activity within this soil. Such results reflect the complex nature of interactions between soil, biota and contaminants and their influence on the degradation of contaminants in the environment. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Journal or Publication Title: Chemosphere
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/ge
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 31769
Deposited By: Prof Kirk T. Semple
Deposited On: 08 Feb 2010 14:15
Refereed?: Yes
Published?: Published
Last Modified: 30 Jul 2019 00:46
URI: https://eprints.lancs.ac.uk/id/eprint/31769

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