Si. Wade et al., On the design of laboratory scale apparatus for electrokinetic soil decontamination under open-flow condition, J FAC AGR K, 43(3-4), 1999, pp. 479-487
Citations number
11
Categorie Soggetti
Agriculture/Agronomy
Journal title
JOURNAL OF THE FACULTY OF AGRICULTURE KYUSHU UNIVERSITY
We devised an experimental apparatus to simulate the electroosmotic and hyd
raulic flow of water during electrokinetic soil decontamination process. Th
e apparatus is an open box with electrode compartments at the both ends and
a central compartment in which soil sample is packed. A laminated wire gau
ze-nylon net was used as cathode-cum-separator. The opening of the wire gau
ze should be >1 mm to let evolved gas escape freely. The cathode compartmen
t was filled with water and a graphite rod immersed wherein was used as the
anode. The draining conduit was attached to the cathodic end at a position
lower than the water table in the anode compartment. Under this setup, the
electroosmotic and hydraulic now contributes to the water flow through the
soil. To evaluate the electroosmotic flow, the flow under zero electric fi
eld was subtracted from the total water flow. Experiments with a soil with
mixed mineralogy showed the subtraction method gave fairly reproducible res
ults with respect to the rate of electroosmotic flow.