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Anaerobic biodegradation of linear alkylbenzene: Isomeric ratio as a monitoring tool.

Johnson, Stephen J, Barry, D A and Christofi, Nicholas (2007) Anaerobic biodegradation of linear alkylbenzene: Isomeric ratio as a monitoring tool. Land Contamination and Reclamation, 15 (2). pp. 235-241. ISSN 0967-0513

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Abstract/Description

Linear alkylbenzenes (LABs) are common environmental contaminants associated with a range of industrial and domestic activities. Although natural environments receiving LABs may exhibit a range of redox conditions, until now only aerobic biodegradation of these compounds has been demonstrated. Where LAB contamination occurs, it is important to identify degradation and measure its extent in order to make decisions on whether monitored natural attenuation (intrinsic bioremediation) is sufficient, or whether active remediation techniques are required. We have demonstrated that LABs are degraded under both aerobic and nitrate-reducing conditions. Statistical analysis of these results and published data indicate that the C12 LAB isomeric ratio varies with biodegradation, independently of the terminal electron acceptor used. Biodegradation (B, %) can be estimated from the ratio of internal to external isomers of C12 LAB by the equation B = 78 x log10 (I:E) + 16.4. This relationship can be used to determine the degree of biodegradation of LABs in a range of environments, including sites where the redox history is unknown, making it a powerful yet simple tool for monitoring LAB biodegradation in the environment.

Item Type: Article
Print ISSN: 0967-0513
Uncontrolled Keywords: Aerobic; Bioremediation; LAB; Natural attenuation; C12 isomeric ratio;
University Divisions/Research Centres: Faculty of Health, Life & Social Sciences > School of Life Sciences
Dewey Decimal Subjects: 500 Science > 570 Life sciences; biology > 572 Biochemistry
500 Science > 540 Chemistry > 547 Organic chemistry
500 Science > 540 Chemistry > 541 Physical chemistry
Library of Congress Subjects: Q Science > QD Chemistry
Q Science > QH Natural history > QH301 Biology
Item ID: 1717
Depositing User: RAE Import
Date Deposited: 14 Jul 2008 09:47
Last Modified: 19 Feb 2013 14:19
URI: http://researchrepository.napier.ac.uk/id/eprint/1717

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