Chromium (VI) Retrieval from Chromium Ore Processing Residues by Electrokinetic Treatment

Lehoux, Alizée; Sanchez-Hachair, Arnaud; Lefebvre, Gaëtan; Carlier, Guillaume; Hébrard, Celine; Lima, Ana; Hofmann, Annette

Type de document :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1007/s11270-017-3562-7

Titre :

Chromium (VI) Retrieval from Chromium Ore Processing Residues by Electrokinetic Treatment

Auteur(s) :

Lehoux, Alizée [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Sanchez-Hachair, Arnaud [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Lefebvre, Gaëtan [Auteur]
Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement [Cerema]
Carlier, Guillaume [Auteur]
Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement [Cerema]
Hébrard, Celine [Auteur]
Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement [Cerema]
Lima, Ana [Auteur]
University of Waterloo [Waterloo]
Hofmann, Annette [Auteur]

Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]

Titre de la revue :

Water, Air, and Soil Pollution

Pagination :

378

Éditeur :

Springer Verlag

Date de publication :

2017-09-11

ISSN :

0049-6979

Mot(s)-clé(s) en anglais :

Chromium VI
COPR
Electrokinetics
Electromigration

Discipline(s) HAL :

Chimie

Résumé en anglais : [en]

Electrokinetics (EK) was investigated as apossible technique for in-situ treatment of leachablechromium at a built site contaminated with chromiumore processing residues (COPR). A preliminary EKexperiment was carried out ...
Lire la suite >Electrokinetics (EK) was investigated as apossible technique for in-situ treatment of leachablechromium at a built site contaminated with chromiumore processing residues (COPR). A preliminary EKexperiment was carried out at the laboratory scale onan undisturbed COPR core sample. Methods applied formaterial and pore water characterization before and afterEK treatment addressed physical aspects by laser diffractiongranulometry, pycnometry and pore watercontent, mineralogical aspects by X-ray diffraction,scanning electron microscopy coupled with energy dispersiveX-ray spectroscopy, and chemical aspects byinductively coupled plasma-atomic emission spectroscopyand atomic absorption spectroscopy for elementalcomposition, spectrophotometry for Cr(VI) analysis,and potentiometry for pH determination. EK was runat 1 V/cm with no external constraints on current intensity.The EK experiment reached an extraction of 72%of the total leachable Cr(VI) after only 10 days oftreatment and 84% after 20 days. Material texture, composition,and pH remained similar. These results indicatethat EK presents a potential solution for extractingleachable Cr(VI) from COPR sites. The impoundedCOPR material appeared to be heterogeneous in compositionat all scales, from field to lab sample, adding tothe challenge of in-situ treatment.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL

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