Whelan_et_al_AAD_Paper_Accepted.pdf (299.79 kB)
Fate and transport of petroleum hydrocarbons in engineered biopiles in polar regions.
journal contribution
posted on 2015-06-09, 10:30 authored by M. J. Whelan, F. Coulon, G. Hince, J. Rayner, R. McWatters, T. Spedding, I. SnapeA dynamic multi-media model that includes temperature-dependency for partitioning and degradation was developed to predict the behaviour of petroleum hydrocarbons during biopiling at low temperature. The activation energy (Ea) for degradation was derived by fitting the Arrhenius equation to hydrocarbon concentrations from temperature-controlled soil mesocosms contaminated with crude oil and diesel. The model was then applied to field-scale biopiles containing soil contaminated with diesel and kerosene at Casey Station, Antarctica. Temporal changes of total petroleum hydrocarbons (TPH) concentrations were very well described and predictions for individual hydrocarbon fractions were generally acceptable (disparity between measured and predicted concentrations was less than a factor two for most fractions). Biodegradation was predicted to be the dominant loss mechanism for all but the lightest aliphatic fractions, for which volatilisation was most important. Summertime losses were significant, resulting in TPH concentrations which were about 25% of initial concentrations just 1year after the start of treatment. This contrasts with the slow rates often reported for hydrocarbons in situ and suggests that relatively simple remediation techniques can be effective even in Antarctica.
History
Citation
Chemosphere, 2015, 131, pp. 232-240Author affiliation
/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Geography/Physical GeographyVersion
- AM (Accepted Manuscript)
Published in
ChemospherePublisher
Elsevier for Pergamonissn
0045-6535eissn
1879-1298Copyright date
2014Available date
2016-01-03Publisher DOI
Publisher version
http://www.sciencedirect.com/science/article/pii/S0045653514014453Language
enAdministrator link
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