CURRENT-VOLTAGE CURVES FOR TREATING EFFLUENT CONTAINING HEDP: DETERMINATION OF THE LIMITING CURRENT

Abstract Membrane separation techniques have been explored for treating industrial effluents to allow water reuse and component recovery. In an electrodialysis system, concentration polarization causes undesirable alterations in the ionic transportation mechanism. The graphic construction of the cur...

Full description

Saved in:
Bibliographic Details
Published in:Brazilian journal of chemical engineering 2015-12, Vol.32 (4), p.831-836
Main Authors: Scarazzato, T., Buzzi, D. C., Bernardes, A. M, Tenório, J. A. S., Espinosa, D. C. R.
Format: Article
Language:English
Subjects:
ENGINEERING, CHEMICAL
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:Abstract Membrane separation techniques have been explored for treating industrial effluents to allow water reuse and component recovery. In an electrodialysis system, concentration polarization causes undesirable alterations in the ionic transportation mechanism. The graphic construction of the current voltage curve is proposed for establishing the value of the limiting current density applied to the cell. The aim of this work was to determine the limiting current density in an electrodialysis bench stack, the function of which was the treatment of an electroplating effluent containing HEDP. For this, a system with five compartments was used with a working solution simulating the rinse waters of HEDP-based baths. The results demonstrated correlation between the regions defined by theory and the experimental data.
ISSN:0104-6632
1678-4383
0104-6632
DOI:10.1590/0104-6632.20150324s00003511