Djedidi, Zied; Drogui, Patrick; Ben Cheikh, Ridha; Mercier, Guy et Blais, Jean-François 
ORCID: https://orcid.org/0000-0003-3087-4318
(2005).
Laboratory Study of Successive Soil Saline Leaching and Electrochemical Lead Recovery.
Journal of Environmental Engineering
, vol. 131
, nº 2.
pp. 305-314.
DOI: 10.1061/(ASCE)0733-9372(2005)131:2(305).
Résumé
This research is related to a laboratory study on the performance of a successive soil saline leaching and electrochemical lead recovery process for soil decontamination. Erlenmeyer leaching assays showed that the addition of 5.5 mol NaCl/L in 25% (w/w) of soil pulp density maintained at pH 3.0 was found the most effective condition for Pb leaching. Under these conditions, 65% of Pb was leached from soil. Electrochemical treatment using an iron-monopolar electrode system operated at a current intensity of 3.0 A was able to reduce Pb content in soil leachate from 650 to 0.15 mg/L and this without production of metallic residue. Then, a leaching tank reactor and electrolytic cell coupled in a closed loop showed that the Pb mass balance of extrants/intrants ratio indicated 99.0±1.6% of Pb was recovered. Likewise, 94.1% of chloride ions were reused in the leaching tank reactor after electrochemical treatment.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | soil properties; electrokinetics; soil treatment; lead (chemical); leaching; chemical treatment; laboratory tests; salinity |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 08 janv. 2021 19:26 |
| Dernière modification: | 18 févr. 2022 19:29 |
| URI: | https://espace.inrs.ca/id/eprint/11009 |
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