Effecto f Different Ireatmento n the Efficiencvo f ElectrokineticR cmovalo f Zn From a Contaminated Clay Soil

Illectrokinetics oil remcdiationis an innovativem ethodf or decontaminatioonf heavym etalsf rom polluteds oils.I n tliis researcha clayeys oil spikedw ith Zn at the conccntrationo f 350 rng/kgu sed to invcstigalecl cctrokinetrice rnediatioant pilofscalew ith differenttr eatmentNs.i tric acid(0.1M), acetic acid (0. I M), EDIA (0.01 M) and deionized water (at the two different applied inirial electricalc umentd ensities.3 0 and 150 mA) were used as the experimentedtr eatmentsA. ll trcatmentsw erei mposcdw ith a constanvt oltageg radiento f 1 V/cm for 120 hours.A mong these treatnentsE, D'[A showedt he highestZ n removale fficiency(moret han 557o);m axirnump ercent of localZ n removala longt hc columnr eachedto 74%.N itric acid anda cetica cid produceds irnilar rcsults;m eanZ n rcmovalp ercentageb ecamea bout 15%.E fficienoyo f electrokineticle mediationincreaseda bout1 2%aon dr eachedto 20%b y increasingc uffentd ensityf rom 30 to i 50 [rA. Irurthcr, the changesin pll along the soil columnsa fter the experimentr un (120 hours), showcd an increasingtr endf rom anodet o cathode.