21707

An Investigation on the Efficiency of Electro kinetic Coupled with Carbon Active Barrier to Remediate Nickel Contaminated Clay

Saeedi M. نويسنده , Jamshidi A. R. نويسنده , Shariatmadri N. نويسنده , Falamaki A. نويسنده

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There have been increasing interests in finding new and innovative solution for removal. ofcontaminants fromsoilsrecently. ln thepresentinvestigation, electrokinetic(EK)process coupledwith activated carbon barrier to remove Nickel from kaolinite clayeysoil is investigated. Laboratory tests wereperformedbyapplyinga constantvoltageto nominalelectric fieldstrength of 1and 1.25V/cmwithinitialNi concentration (500mg/kg)for3 and 7 days. Results revealed that, the coupledtechnologyofEK with barrier when filledwith activatedcarbon could effectively prevent the reverseelectroosmoticflowwhichhas adverse effecton the Ni removalfromsoil. In addition, 20-50%ofNickelmi.gration towardsthe cathodeduring the tests wasachieved.

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