MOLTEN SALTS. ELECTRICAL TRANSPORT IN THE SYSTEM SILVER NITRATE–SODIUM NITRATE

1952 ◽  
Vol 30 (10) ◽  
pp. 779-782 ◽  
Author(s):  
P. M. Aziz ◽  
F. E. W. Wetmore
Keyword(s):  
Silver Nitrate ◽  
Sodium Nitrate ◽  
Electrical Transport ◽  
Molten Salts ◽  
Silver Ion ◽  
Sodium Ion ◽  
Nitrate Ion ◽  
Usual Assumption ◽  
The Individual

Relative transport fractions have been measured in the molten system silver nitrate - sodium nitrate at 330° over the range 5 to 25 mole% silver nitrate. The individual fractions for silver, sodium, and nitrate ion have been assessed within limits. The results indicate that transport by silver ion is greater than that by sodium ion at the same concentration, although the latter has the smaller radius. The usual assumption that the largest ion (nitrate) does not transport charge is within the interpretation of the results.

MOLTEN SALTS: VISCOSITY OF SILVER NITRATE

1954 ◽  
Vol 32 (9) ◽  
pp. 839-841 ◽  
Author(s):  
F. A. Pugsley ◽  
F. E. W. Wetmore
Keyword(s):  
Silver Nitrate ◽  
Temperature Dependence ◽  
Viscous Flow ◽  
Electrical Transport ◽  
Molten Salts ◽  
Energy Of Activation

Precise values for the viscosity of silver nitrate show that Frenkel's relation for comparison of the temperature dependence of viscosity and conductivity is valid for this system and that the energy of activation for viscous flow is proportional to that for electrical transport over a range of temperature.

MOLTEN SALTS: COMPLEX ION FORMATION IN THE SYSTEM SILVER CHLORIDE – SILVER NITRATE

1954 ◽  
Vol 32 (9) ◽  
pp. 864-866 ◽  
Author(s):  
S. Hill ◽  
F. E. W. Wetmore
Keyword(s):  
Silver Nitrate ◽  
Molten Salts ◽  
Silver Chloride ◽  
Complex Cation ◽  
Silver Ion ◽  
Conductivity Data ◽  
Dilute Solutions ◽  
Ion Formation ◽  
Complex Ion

Conductivity data have been combined with transport fractions to show that silver chloride in dilute solutions in silver nitrate can be regarded as being almost completely in the form of complex cation. The mobility of the complex ion is shown to be about one-half that of silver ion.

Separation and Recovery of Sodium Nitrate From Low-Level Radioactive Liquid Waste by Electrodialysis

2010 ◽  
Author(s):  
Yoshihiro Meguro ◽  
Atsushi Kato ◽  
Yoko Watanabe ◽  
Kuniaki Takahashi
Keyword(s):  
Sodium Nitrate ◽  
Nitrate Solution ◽  
Liquid Waste ◽  
Sodium Ion ◽  
High Concentration ◽  
Radioactive Liquid Waste ◽  
Nitrate Ion ◽  
Low Level ◽  
Sodium Nitrate Solution ◽  
Exchange Membrane

An advanced method, in which electrodialysis separation of sodium nitrate and decomposition of nitrate ion are combined, has been developed to remove nitrate ion from low-level radioactive liquid wastes including nitrate salts of high concentration. In the electrodialysis separation, the sodium nitrate was recovered as nitric acid and sodium hydroxide. When they are reused, it is necessary to reduce the quantity of impurities getting mixed with them from the waste fluid as much as possible. In this study, therefore, a cation exchange membrane with permselectivity for sodium ion and an anion exchange membrane with permselectivity for monovalent anion were employed. Using these membranes sodium and nitrate ions were effectively removed form a sodium nitrate solution of high concentration. And also it was confirmed that sodium ion was successfully separated from cesium and strontium ions and that nitrate ion was separated from sulfate and phosphate ions.

MOLTEN SALTS ELECTRICAL CONDUCTIVITY IN THE SYSTEM SILVER NITRATE–SODIUM NITRATE

1952 ◽  
Vol 30 (12) ◽  
pp. 922-923 ◽  
Author(s):  
June Byrne ◽  
Helen Fleming ◽  
F. E. W. Wetmore
Keyword(s):  
Electrical Conductivity ◽  
Melting Point ◽  
Silver Nitrate ◽  
Mole Fraction ◽  
Sodium Nitrate ◽  
Molten Salts ◽  
Energy Of Activation ◽  
Equivalent Conductivity ◽  
Density Data ◽  
Arrhenius Energy

Conductivity and density data have been obtained for the system silver nitrate – sodium nitrate. The Arrhenius energy of activation for electrical migration in sodium nitrate and in the binary melts decreases with rising temperature above the melting point, as was shown previously for silver nitrate. The equivalent conductivity isotherms for the binary melts are almost linear in the mole fraction.

Thermoelectric Studies of Silver Nitrate in Sodium Nitrate – Potassium Nitrate Eutectic Melt

1971 ◽  
Vol 49 (12) ◽  
pp. 2044-2047
Author(s):  
L. G. Boxall ◽  
K. E. Johnson
Keyword(s):  
Seebeck Coefficient ◽  
Silver Nitrate ◽  
Mole Fraction ◽  
Sodium Nitrate ◽  
Nitrate Concentration ◽  
Potassium Nitrate ◽  
Silver Nitrate Concentration ◽  
Eutectic Melt

The Seebeck coefficient, εT, of the thermocell Ag(T)/AgNO3 in NaNO3 − KNO3/Ag (T + ΔT) was measured as a function of silver nitrate concentration and temperature. Extrapolation of the results to unit mole fraction, N, of AgNO3 gave the value εT0 = − 277.5 − 0.136T °C (µV deg−1).For several mixed melts of AgNO3 and an alkali nitrate the function [Formula: see text] was calculated and shown to be linear in N. P was extrapolated to finite values for the pure alkali nitrates.

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