Journal article

Electrokinetic removal of chromium from chromite ore-processing residue using graphite particle-supported nanoscale zero-valent iron as the three-dimensional electrode

T Huang, L Liu, L Zhou, S Zhang

Chemical Engineering Journal | Published : 2018


Chromite ore processing residue (COPR) contaminates farmland and groundwater around storage fields through the release of chromium leachate. Graphite particle-supported nanoscale zero-valent iron (GP-nZVI) synthesized by an impregnation-reduction pathway was used as a microelectrode in a three-dimensional electrochemical system to enhance the electrokinetic removal of Cr from COPR samples. The environmental activities of the electrokinetics-treated samples were measured by analysing the chemical speciation and conducting toxicological tests on Vibrio fischeri. The first-order and Elovich kinetic models are suitable for predicting the reaction process under different aqueous conditions. A str..

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