Selective separation of chromium (VI) from acidic solutions containing various metal ions through emulsion liquid membrane using trioctylamine as extractant

Chromium compounds have received considerable attention because of used extensively in such industrial applications as electroplating, tanning of leather goods, steelmaking, and corrosion inhibition. In this work, selective separation and concentration of Cr (VI) ions from acidic solutions containin...

Full description

Saved in:
Bibliographic Details
Published in:Separation and purification technology 2008-11, Vol.64 (1), p.56-62
Main Author: Kumbasar, Recep Ali
Format: Article
Language:English
Subjects:
Acidic solution
Applied sciences
Chemical engineering
Cr (VI) extraction
Emulsion liquid membrane
Exact sciences and technology
General purification processes
Pollution
Trioctylamine
Wastewater
Wastewaters
Water treatment and pollution
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Chromium compounds have received considerable attention because of used extensively in such industrial applications as electroplating, tanning of leather goods, steelmaking, and corrosion inhibition. In this work, selective separation and concentration of Cr (VI) ions from acidic solutions containing various metal ions through emulsion liquid membrane (ELM) containing trioctylamine (TOA) as extractant was studied. The membrane phase consists of kerosene as diluent, ECA 4360J as surfactant, TOA as extractant and 0.5 M (NH 4) 2CO 3 solution as stripping phase. The effect of acid type and concentration of the feed solution, initial Cr (VI) concentration of the feed solution, mixing speed, type and concentration of the stripping solution, surfactant concentration, extractant concentration and phase ratio was examined and optimum conditions was determined. After the optimum conditions were determined, it was possible to selectively extract 99% of Cr (VI) from the feed solutions containing Cu, Zn, Co, Ni and Cd ions.
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2008.08.005