Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia
|dc.identifier.citation||Tibbett, M. and George, S. and Davie, A. and Barron, A. and Milton, N. and Greenwood, P. 2011. Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia. Water, Air and Soil Pollution: an international journal of environmental pollution. 216 (1-4): pp. 513-525.|
We investigated the potential of soil moisture and nutrient amendments to enhance the biodegradation of oil in the soils from an ecologically unique semi-arid island. This was achieved using a series of controlled laboratory incubations where moisture or nutrient levels were experimentally manipulated. Respired CO2 increased sharply with moisture amendment reflecting the severe moisture limitation of these porous and semi-arid soils. The greatest levels of CO2 respiration were generally obtained with a soil pore water saturation of 50-70%. Biodegradation in these nutrient poor soils was also promoted by the moderate addition of a nitrogen fertiliser. Increased biodegradation was greater at the lowest amendment rate (100 mg N kg -1 soil) than the higher levels (500 or 1,000 mg N kg-1 soil), suggesting the higher application rates may introduce N toxicity. Addition of phosphorous alone had little effect, but a combined 500 mg N and 200 mg P kg-1 soil amendment led to a synergistic increase in CO 2 respiration (3.0×), suggesting P can limit the biodegradation of hydrocarbons following exogenous N amendment. © 2010 Springer Science+Business Media B.V.
|dc.title||Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia|
|dcterms.source.title||Water, Air and Soil Pollution: an international journal of environmental pollution|
|curtin.department||Department of Chemistry|
|curtin.accessStatus||Fulltext not available|
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