Assessment of groundwater contamination risk by BTEX from residual fuel soil phase
نویسندگان
چکیده
Abstract The aim of this work is to assess the risk groundwater contamination associated with BTEX dissolution from fuels as a residual phase. Numerical simulations sixty scenarios were carried out software HYDRUS 2D/3D. Groundwater was analyzed given combination different porous media textures (silt loam, sandy loam and clay), water fluxes (0.5%, 1% or 3% Rainfall), table depths (1.5, 2.5, 5 8 m below ground surface) biodegradation rate (active null). Risk calculated comparing leachate concentrations aquifer limits established by an international guideline for human drinking water. In all cases, benzene toluene had highest mobility in dissolved Contrary, xylene ethylbenzene tended concentrate close source zone. These two compounds predominantly concentrated solid Calculated proportional flux inversely unsaturated thickness. Without biodegradation, fine-grained sediments very high shallow aquifers (> 1.5 depth) moderate low deeper aquifers. However, classified up deep. When considered, leached greatly reduced three textures. concentration Bahía Blanca City´s showed acceptable agreement simulated scenarios. most sensitive parameters model results > f oc depth K s . This study important assessing risks developing management strategies fuel contaminated sites.
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ژورنال
عنوان ژورنال: SN applied sciences
سال: 2021
ISSN: ['2523-3971', '2523-3963']
DOI: https://doi.org/10.1007/s42452-021-04325-w