Arsenic(V) Extraction from Sulfuric Acid Media Using DBBP−D2EHPA Organic Mixtures

Several mixtures of the organophosphorus extractants dibutyl butyl phosphonate (DBBP) and bis(2-ethylhexyl)phosphoric acid (D2EHPA) have been investigated for arsenic removal from sulfuric acid media in a synthetic copper electrolyte solution. The extraction system has been characterized in terms of...

Full description

Saved in:
Bibliographic Details
Published in:Industrial & engineering chemistry research 2003-02, Vol.42 (3), p.574-581
Main Authors: Ballinas, María de Lourdes, Rodríguez de San Miguel, Eduardo, Muñoz, María, de Gyves, Josefina
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Chemistry
Exact sciences and technology
Inorganic chemistry and origins of life
Kinetics and mechanism of reactions
Liquid-liquid extraction
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:Several mixtures of the organophosphorus extractants dibutyl butyl phosphonate (DBBP) and bis(2-ethylhexyl)phosphoric acid (D2EHPA) have been investigated for arsenic removal from sulfuric acid media in a synthetic copper electrolyte solution. The extraction system has been characterized in terms of As(V), metal [Fe(III), Sb(V), Ni(II), Cu(II)], and H2SO4 loadings; extraction and stripping contact times; organic-phase composition; organic-to-aqueous ratio; and selectivity. McCabe−Thiele interpolations indicate a reduction in the arsenic electrolyte concentration from 7300 to 2000 mg/L in two theoretical stages at O/A = 4 for the 1.5 M DBBP−0.5 M D2EHPA mixture at 50 °C. For mixtures of DBBP and D2EHPA, there is an increase in the arsenic distribution (synergism) compared to DBBP alone, and at the same time, extractant loss and sulfuric acid coextraction are diminished.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie020402a