RECOVERY AND CONCENTRATION OF STRONG MINERAL ACIDS FROM DILUTE-SOLUTIONS THROUGH LLX .2. REVERSIBLE EXTRACTION WITH BRANCHED-CHAIN AMINES

被引：26

作者：

EYAL, AM

HAZAN, B

BLOCH, R

机构：

[1] Casali Institute of Applied Chemistry, School of Applied Science and Technology, The Hebrew University of Jerusalem, 91904, Jerusalem

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 1991年 / 9卷 / 02期

关键词：

D O I：

10.1080/07366299108918051

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tri(2-ethylhexyl) amine (TEHA) was found to be a considerably weaker extractant for mineral acids than straight chain aliphatic amines. It is still, however, markedly stronger than solvating extractants such as alcohols and esters. Its medium strength provides for a relatively wide range of efficient and reversible extraction. TEHA and similarly branched chain tertiary amines are therefore suitable for recovery of strong mineral acids from effluents containing them in low concentrations. Effects of diluents and modifiers and of amine concentration were found to provide a strong tool for adjusting the range of efficient and reversible extraction to characteristics of treated solutions.

引用

页码：211 / 222

页数：12

共 13 条

[1]

Crouse Jr D. J., 1965, US Pat, Patent No. [3 211 526, 3211526]

[2]

EYAL AM, SOLVENT EXTRACTION I

[3]

FROLOV YG, 1966, T MOSK KHIM TEKHN I, V51, P116

[4] BASE STRENGTHS OF AMINE-AMINE HYDROCHLORIDE SYSTEMS IN TOLUENE [J].

GRINSTEAD, RR ;

DAVIS, JC .

JOURNAL OF PHYSICAL CHEMISTRY, 1968, 72 (05) :1630-+

[5]

GRINSTEAD RR, 1966, P ISEC, P426

[6] CORRELATION OF THE BASE STRENGTHS OF AMINES [J].

HALL, HK .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1957, 79 (20) :5441-5444

[7]

KOSSWIG K, 1983, CHEM ECON ENG REV, V15, P30

[8]

MRANKA M, 1974, P INT SOLV EXTR C, P49

[9]

SHMIDT VS, 1965, RUSS CHEM REV, V34, P584

[10]

SHMIDT VS, 1977, P INT SOLV EXTR C, P718

← 1 2 →