An optimised method for electrodialytic removal of heavy metals from harbour sediments

Kristine B. Pedersen, Pernille Erland Jensen, Lisbeth M. Ottosen, Tore Lejon

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Abstract

A 2-compartment electrodialytic cell set-up for treatment of solid materials has in many respects proven superior to other types of cells in removing heavy metals from sediments. Most notably, remediation times were shorter, energy consumption was lower and higher removal efficiencies were observed. By employing m1ultivariate modelling and investigating additional experimental variables, the relative importance of variables effecting remediation was determined and response surfaces for heavy metal removal were calculated. Employing optimal conditions it was possible to remove targeted metals (Pb, Cu, Zn), by 73-96 %, and remediation objectives could be met in a large region of the studied experimental domain.
Original languageEnglish
JournalElectrochimica Acta
Volume173
Pages (from-to)432-439
Number of pages8
ISSN0013-4686
DOIs
Publication statusPublished - 2015

Keywords

  • Chemometrics
  • Electrokinetics
  • Harbour sediments
  • Heavy metals
  • Sequential extraction
  • Copper
  • Electrohydrodynamics
  • Electromagnetic fields
  • Energy utilization
  • Lead
  • Pollution
  • Electrodialytic removal
  • Heavy metal removal
  • Optimal conditions
  • Removal efficiencies
  • Sediments

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