Calculation of the equilibrium in the extraction of nitric acid with 30 and 12% Tri-n-butylphosphate solutions in dodecane

被引：6

作者：

Ochkin, A. V. ^{[1
]}

Nekhaevskii, S. Yu. ^{[1
]}

机构：

[1] Mendeleev Russian Univ Chem Technol, Moscow 125047, Russia

来源：

THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING | 2015年 / 49卷 / 05期

关键词：

extraction; nitric acid; tri-n-butylphosphate (TBP); dodecane; equilibrium calculation; WATER; PHOSPHATE; SYSTEM; COMPONENTS;

D O I：

10.1134/S0040579515050231

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The concentrations of nitric acid and tri-n-butylphosphate (TBP) have been calculated for 30 and 12% TBP solutions in dodecane from the experimental data for the H2O-HNO3-TBP-dodecane system. The used model implies the formation of the HNO3 center dot TBP monosolvate, the HNO3 center dot 2TBP disolvate, and the 2HNO(3) center dot TBP semisolvate. The mean-square relative deviations of the calculated data from experimental results have been determined and used to optimize the calculated formation constants of the solvates and their hydrate numbers. The calculated 2HNO(3) center dot TBP semisolvate concentrations in the studied data array are small and can be neglected. It has been established that the extraction of nitric acid with 30 and 12% TBP solutions in dodecane can be described by the same equation.

引用

页码：649 / 655

页数：7

共 17 条

[1] Calculation of the time for establishing radiation equivalence of high-level wastes [J].

Babaev, NS ;

Merkushkin, AO ;

Ochkin, AV ;

Rovnyi, SI .

ATOMIC ENERGY, 2005, 98 (02) :115-121

[2] SYSTEM - TRI-N-BUTYL PHOSPHATE (TBP)-NITRIC ACID-WATER .I. ACTIVITIES OF TBP IN EQUILIBRIUM WITH AQUEOUS NITRIC ACID AND PARTIAL MOLAR VOLUMES OF 3 COMPONENTS IN TBP PHASE [J].

DAVIS, W ;

MROCHEK, J ;

HARDY, CJ .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1966, 28 (09) :2001-&

[3] ACTIVITIES OF 3 COMPONENTS IN SYSTEM WATER-NITRIC ACID-URANYL NITRATE HEXAHYDRATE AT 25 DEGREES [J].

DAVIS, W ;

LAWSON, PS ;

DEBRUIN, HJ ;

MROCHEK, J .

JOURNAL OF PHYSICAL CHEMISTRY, 1965, 69 (06) :1904-&

[4] NEW ACTIVITY COEFFICIENTS OF 0-100 PER CENT AQUEOUS NITRIC ACID [J].

DAVIS, W ;

DEBRUIN, HJ .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1964, 26 (06) :1069-1083

[5] A thermodynamic description of the distribution of water in H2O-tributyl phosphate and H2O-tributyl phosphate-solvent systems [J].

Gladilov, D. Yu. ;

Nekhaevskii, S. Yu. ;

Ochkin, A. V. .

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY, 2006, 80 (12) :1934-1939

[6]

Mikulin G., 1968, VOPROSY FIZICHESKOI

[7]

Ochkin A., 2011, P 19 INT SOLV EXTR C, P168

[8]

Ochkin A., 2011, 19 INT SOLV EXTR C I, P131

[9] Some Problems in Reprocessing of Fuel Spent by Modern Power Reactors [J].

Ochkin, A. V. .

THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING, 2014, 48 (01) :34-38

[10] Extraction of nitric acid by tributyl phosphate solution in n-dodecane [J].

Ochkin, A. V. ;

Afonina, M. A. ;

Merkushkin, A. O. ;

Nekhaevskii, S. Yu. .

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2010, 84 (09) :1526-1531

← 1 2 →