TY - JOUR 
AU - Chourouk Mathlouthi
AU - Mariem Kacem
AU - Zyed Mesticou
AU - Philippe Dubujet
TI - Polluted soil leaching: unsaturated conditions and flow rate effects
JO - Eurasian Journal of Soil Science
VL - 6
IS - 2
PB - Federation of Eurasian Soil Science Societies 
SN - 2147-4249 
UR - http://ejss.fesss.org/10.18393/286629
DO - 10.18393/286629
SP , EP - 161-167
KW  - Soil column, soil leaching, unsaturated soil, flow rate effect.
PY  - 2016
AB  - In this study, soil samples are extracted from a polluted site at different depths. Soils texture and pollutant presence are different with depth. Preliminary analyzes showed pollution by heavy metals. To simulate soil leaching operation in static condition, a series of leaching tests are conducted in laboratory column under conditions of upflow unsaturated soil. Electrical conductivity and pH measurements on the recovered leachate are performed. Different flow rates are tested. Comparison of different profiles shows that the dissolved pollutants are concentrated in the upper soil levels and disperse weakly in the lower parts which confirm the nature of anthropogenic pollution of heavy metals. Water mobilizes a high amount of dissolved ionic substances up to 80% of the initial concentration. The increase in flow rate requires more pore volume injected to achieve the maximum clearance rate. The down flow condition extracts a small amount of dissolved substances.
ER  -