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The potential for anaerobic mineralisation of hydrocarbon constituents of oily drill cuttings from the North Sea seabed.

Artz, Rebekka R. E. and Semple, Kirk T. and Killham, Ken and Prosser, Jim I. and Paton, Graeme I. (2002) The potential for anaerobic mineralisation of hydrocarbon constituents of oily drill cuttings from the North Sea seabed. Journal of Environmental Monitoring, 4 (4). pp. 553-557. ISSN 1464-0325

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Abstract

The potential for natural attenuation of hydrocarbons in oily drill cuttings from the seabed beneath a North Sea oil platform was investigated. The study focused on the anaerobic degradation of n-hexadecane, n-octacosane and naphthalene using additions of C-14-labelled analogues to drill cuttings samples and was conducted under realistic seabed conditions (except pressure) over an 11-month period. No mineralisation of naphthalene was detected over this time period and mineralisation of octacosane represented only 0.5-1.5% of the added label. In contrast, mineralisation of hexadecane was 10-49% after 11 months of incubation. Selective inhibition of key functional bacterial groups revealed the key role of both sulfate reduction and methanogenesis in the degradation process. This study demonstrates the potential for natural attenuation of at least some hydrocarbon constituents of oily drill cuttings under realistic environmental conditions and highlights the involvement of a wide functional consortium in the natural attenuation process.

Item Type: Article
Journal or Publication Title: Journal of Environmental Monitoring
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 18571
Deposited By: Prof Kirk T. Semple
Deposited On: 24 Oct 2008 20:43
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 15:19
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/18571

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