Chromium remediation or release? Effect of iron(II) sulfate addition on chromium(VI) leaching from columns of chromite ore processing residue.

@article{Geelhoed2003ChromiumRO,
  title={Chromium remediation or release? Effect of iron(II) sulfate addition on chromium(VI) leaching from columns of chromite ore processing residue.},
  author={Jeanine S. Geelhoed and Johannes C. L. Meeussen and Martin R{\"o} and Stephen Hillier and Rhodri P. Thomas and John G. Farmer and Edward L. Paterson},
  journal={Environmental science & technology},
  year={2003},
  volume={37 14},
  pages={
          3206-13
        }
}
Chromite ore processing residue (COPR), derived from the so-called high lime processing of chromite ore, contains high levels of Cr(III) and Cr(VI) and has a pH between 11 and 12. Ferrous sulfate, which is used for remediation of Cr(VI) contamination in wastewater and soils via reduction to Cr(III) and subsequent precipitation of iron(III)/chromium(III) hydroxide, has also been proposed for remediation of Cr(VI) in COPR. Instead, however, addition of FeSO4 to the infiltrating solution in column… CONTINUE READING
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