Biogenic volatile organic compounds as a potential stimulator for organic contaminant degradation by soil microorganisms
McLoughlin, Emma; Rhodes, Angela H.; Owen, Susan M.; Semple, Kirk T.. 2009 Biogenic volatile organic compounds as a potential stimulator for organic contaminant degradation by soil microorganisms. Environmental Pollution, 157 (1). 86-94. 10.1016/j.envpol.2008.07.029
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McLoughlinPPN005337.pdf - Accepted Version
The effects of monoterpenes on the degradation of 14C-2,4-dichlorophenol (DCP) were investigated in soils collected from areas surrounding monoterpene and non-monoterpene emitting vegetation. Indigenous microorganisms degraded 14C-2,4-DCP to 14CO2, after 1 d contact time. Degradation was enhanced by prior exposure of the soils to 2,4-DCP for 32 d, increasing mineralization extents up to 60%. Monoterpene amendments further enhanced 2,4-DCP degradation, but only following pre-exposure to both 2,4-DCP and monoterpene, with total 2,4-DCP mineralisation extents of up to 71%. Degradation was greatest at the higher monoterpene concentrations (≥ 1 μg kg-1). Total mineralisation extents were similar between concentrations, but higher than the control and the 0.1 μg kg-1 amendment, indicating that increases in monoterpene concentration has a diminishing enhancing effect. We suggest that monoterpenes can stimulate the biodegradation of 2,4-DCP by indigenous soil microorganisms and that monoterpene amendment in soils is an effective strategy for removing organic contaminants.
|Programmes:||CEH Programmes pre-2009 publications > Biogeochemistry|
|Additional Keywords:||mineralisation, biodegradability, 2,4-dichlorophenol, monoterpenes, limonene, ageing soils|
|NORA Subject Terms:||Ecology and Environment|
|Date made live:||19 Jan 2009 10:21|
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- Biogenic volatile organic compounds as a potential stimulator for organic contaminant degradation by soil microorganisms. (deposited 19 Jan 2009 10:21) [Currently Displayed]
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