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A critical review of the influence of groundwater level fluctuations and temperature on LNAPL contaminations in the context of climate change

Abstract : The intergovernmental panel on climate change (IPCC) predicts significant changes in precipitation patterns, an increase in temperature, and groundwater level variations by 2100. These changes are expected to alter light non-aqueous phase liquid (LNAPL) impacts since groundwater level fluctuations and temperature are known to influence both the mobility and release of LNAPL compounds to air and groundwater. Knowledge of these potential effects is currently dispersed in the literature, hindering a clear vision of the processes at play. This review aims to synthesize and discuss the possible effects of the increase in temperature and groundwater level fluctuations on the behavior of LNAPL and its components in a climate change context. In summary, a higher amplitude of groundwater table variations and higher temperatures will probably increase biodegradation processes, the LNAPL mobility, and spreading across the smear zone, favoring the release of LNAPL compounds to the atmosphere and groundwater but decreasing the LNAPL mass and its longevity. Outcomes will, nevertheless, vary greatly across arid, cold, or humid coastal environments, where different effects of climate change are expected. The effects of the climate change factors linked to soil heterogeneities, local conditions, and weathering processes will govern LNAPL behavior and need to be further clarified.
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https://hal.univ-lorraine.fr/hal-03352335
Contributor : Amélie Cavelan Connect in order to contact the contributor
Submitted on : Thursday, September 23, 2021 - 10:09:05 AM
Last modification on : Tuesday, November 9, 2021 - 4:52:05 PM

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Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License

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Amélie Cavelan, Fabrice Golfier, Stéfan Colombano, Hossein Davarzani, Jacques Deparis, et al.. A critical review of the influence of groundwater level fluctuations and temperature on LNAPL contaminations in the context of climate change. Science of the Total Environment, Elsevier, 2022, 806, pp.150412. ⟨10.1016/j.scitotenv.2021.150412⟩. ⟨hal-03352335⟩

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