Recovery of high grade phosphoric acid from wet process acid by solvent extraction with aliphatic alcohols

被引：58

作者：

Amin, M. I. ^{[1
]}

Ali, M. M. ^{[1
]}

Kamal, H. M. ^{[1
]}

Youssef, A. M. ^{[2
]}

Akl, M. A. ^{[2
]}

机构：

[1] Nucl Mat Author, Cairo, Egypt

[2] Mansoura Univ, Fac Sci, Dept Chem, Mansoura, Egypt

来源：

HYDROMETALLURGY | 2010年 / 105卷 / 1-2期

关键词：

High grade phosphoric acid; Solvent extraction; Aliphatic alcohols; PURIFICATION;

D O I：

10.1016/j.hydromet.2010.08.007

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

High grade phosphoric acid was obtained using liquid-liquid extraction with aliphatic alcohols to separate metal and fluoride ion impurities in the aqueous phase. The influence of alcohol chain length, alcohol concentration, organic/aqueous phase ratio, temperature, shaking time and phosphoric acid concentration on P2O5 extraction was studied. Scrubbing with acid and stripping with water were also investigated. n-Octanol proved to be the most efficient and selective alcohol. The temperature had a slight positive effect and the extraction was enhanced by increasing P2O5 and with the increase of organic/aqueous phase ratio. The optimum organic/aqueous phase ratio for stripping was determined to be 2.0. For 9.2 M H3PO4, 98% of fluoride ion was removed whereas almost complete removal of iron, manganese, copper, cadmium and zinc was attained. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：115 / 119

页数：5

共 8 条

[1]

Abu-Raia A., 2006, THESIS TANTA U, P112

[2] Purification of wet process phosphoric acid by solvent extraction with TBP and MIBK mixtures [J].