Electroremediation of an industrial area contaminated by chromium.
Remediation of soils contaminated by chromium near an industrial area in Algeria has been studied by means of electrokinetic process. Chromium behavior in the course of an electroremediation is studied as a function of the solution in both anolyte and catholyte. After speciation and experiments which consist of 20 days each, it is shown that the use of NaNO(3) in these compartments induces a chromium oxidation by nitrate anion and its removing only through the anion exchange membrane toward the anode. Other ions (Cl(-) and SO(4)(2-) give rise to ion transfer toward the two electrodes showing that the chromium is present at two oxidation states. The pH and the current behavior have also been examined in this work. Results have shown a contribution to the understanding of the removing mechanisms in the course of the electroremediation of a soil contaminated by chromium.
Research Centre of Physical and Chemical Analyses (CRAPC), El- Alia, Algiers, Algeria.
O
O
Merdoud
Djamal E
DE
Akretche
D000462:Algeria; D002857:Chromium / Q000737:chemistry / Q000302:isolation & purification*; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D052918:Environmental Restoration and Remediation; D007220:Industrial Waste / Q000032:analysis / Q000517:prevention & control; D007221:Industry; D017942:Nitric Acid / Q000737:chemistry; D010084:Oxidation-Reduction; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000737:chemistry / Q000302:isolation & purification*
D007220:Industrial Waste; D012987:Soil; D012989:Soil Pollutants; D002857:Chromium; D017942:Nitric Acid