Continuous multistage electrodialytic treatment of copper smelter wastewater

•mCu/mAs ratio in the wastewater was increased from less than 0.1 to more than 2 by electrodialysis.•ED treatment can be considered as a previous stage of conventional treatment of mining wastewater.•The amount of copper recovered from each stage of the electrodialytic cell is the same. In this work...

Full description

Saved in:
Bibliographic Details
Published in:Minerals engineering 2017-01, Vol.100, p.187-190
Main Authors: Hansen, Henrik K., Lazo, Andrea, Gutierrez, Claudia, Durán, Manuel, Lazo, Pamela, Rojo, Adrián
Format: Article
Language:English
Subjects:
Arsenic removal
Copper recovery
Electrodialysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•mCu/mAs ratio in the wastewater was increased from less than 0.1 to more than 2 by electrodialysis.•ED treatment can be considered as a previous stage of conventional treatment of mining wastewater.•The amount of copper recovered from each stage of the electrodialytic cell is the same. In this work, a continuous multistage electrodialytic technique is evaluated as a possible treatment of copper smelter wastewater. Six experiments with different values of feed flow rate, current density and treatment time were carried out. It was possible to concentrate copper during experiments and a maximum recovery of 10% was achieved. The experiment with a feed flow rate of 30mLmin−1, current density of 300Am−2 and a treatment time of 2h was the most efficient, with a copper recovery of 5.1%. In sections where copper was concentrated, a solution with mCu/mAs ratio around 2 was obtained, this value is substantially higher than 0.1, which is the value for a mining wastewater.
ISSN:0892-6875
1872-9444
DOI:10.1016/j.mineng.2016.11.006