19 2-Ethyhexyl nitrate (2-EHN) is a major additive of fuel which is used to comply with the 20 cetane number of diesel. Because of its wide use and possible accidental release, 2-EHN is a 21 potential pollutant of the environment. In this study, Mycobacterium austroafricanum IFP 22 2173 was selected among several strains as the best 2-EHN degrader. The 2-EHN 23 biodegradation rate was increased...

In this paper, we investigated the abilities of five sugar-based synthetic surfactants and biosurfactants from three different families (i.e., alkyl polyglycoside (APG), sophorolipid (SL), rhamnolipid (RL)) to dissolve mobilize non-aqueous phase liquid (NAPL) components, i.e., toluene perchloroethylene (PCE), adsorbed on porous matrices. The objective study was establish a benchmark for selecti...

Abstract Mass transfer rates at liquid–liquid interfaces are relevant for a broad range of processes in natural and technical systems. The objective this study was to characterize quantify convective flow along the interface between water nonaqueous‐phase liquids (NAPLs). Three NAPLs with different solubility were used: 1‐heptanol, 1‐octanol, 1‐nonanol. visualized recorded micromodel setup fluo...

The aim of this study is to gain a better understanding of the conceptual model of contaminant transport and fate in cases of NAPL pollution in mega-site contexts in order to improve the design of remedial strategies. The area where the study was carried out is an unconfined aquifer of alluvial fans in the Tarragona Petrochemical Complex (Spain). Two boreholes were drilled and continuous cores ...

Pollutants in the form of non-aqueous phase liquids (NAPLs), such as petroleum products, pose a serious threat to the soil and groundwater. A mathematical model was derived to study the unsteady pollutant concentrations through water saturated contaminated soil under air sparging conditions for different NAPLs and soil properties. The comparison between the numerical model results and the publi...

The estimation of the extent of a polluted zone after an accidental spill occurred in road transport is essential to assess the risk of water resources contamination and to design remediation plans. This paper presents a metamodel based on artificial neural networks (ANN) for estimating the depth of the contaminated zone and the volume of pollutant infiltration in the soil in a twolayer soil (a...