Concentration and immobilization of 137Cs from liquid radioactive waste using sorbents based on hydrated titanium and zirconium oxides

2017 ◽  
Author(s):  
A. V. Voronina ◽  
A. Y. Noskova ◽  
E. Y. Gritskevich ◽  
M. A. Mashkovtsev ◽  
V. S. Semenishchev
Keyword(s):  
Radioactive Waste ◽  
Liquid Radioactive Waste ◽  
Zirconium Oxides ◽  
Hydrated Titanium

scholarly journals Application of Nonorganic Sorbents for Treatment of Radioactively-contaminated Natural Waters and Liquid Radioactive Waste.

2016 ◽  
pp. 102
Author(s):  
Keyword(s):  
Titanium Dioxide ◽  
Radioactive Waste ◽  
Natural Waters ◽  
Ammonium Acetate ◽  
Liquid Radioactive Waste ◽  
Hydrated Titanium Dioxide ◽  
Model Liquid ◽  
Ferrocyanide Sorbents ◽  
Saline Solutions ◽  
Hydrated Titanium

Comparative analysis of the method of natural radioactively-contaminated waters and model liquid radioactive waste containing B-Trilon, ammonium acetate, and NaNO3 with natural and artificial nonorganic sorbents (aluminum silicates, ferrocyanide sorbents based on hydrated titanium dioxide, klinoptyalolith, glauconit, Termoxid-3A and Termoxid-35 sorbents) was carried out. It was demonstrated that when treating low-saline solutions and drinking water in respect of cesium radio nuclides the highest distribution ration 1.0·107 ml/g was observed for NKF- klinoptyalolith sorbent. When decontaminate solutions containing B-Trilon the cesium distribution ratios with artificial sorbents Т-35, NKF- hydrated titanium dioxide and natural aluminum silicates (klinoptyalolith and glauconit) were comparable and equal, depending on the B-Trilon concentration ~102‒103 ml/g. To treat high-saline NaNO3 solutions NKF- hydrated titanium dioxide and NKF- glauconit were effective: cesium distribution ratios from NaNO3 solution with 2 mol/l concentration were 6.1·104 and 1.7 ·104 ml/g, respectively.

Simulation of adsorption-coagulation purification of liquid radioactive waste to remove surfactants

2012 ◽  
Vol 85 (1) ◽  
pp. 46-51 ◽  
Author(s):  
M. G. Ivanets ◽  
T. A. Savitskaya ◽  
D. D. Grinshpan ◽  
N. G. Tsygankova ◽  
A. E. Savkin
Keyword(s):  
Radioactive Waste ◽  
Liquid Radioactive Waste

Immobilization of NPP evaporator bottom high salt-bearing liquid radioactive waste into struvite-based phosphate matrices

2021 ◽  
Vol 416 ◽  
pp. 125902
Author(s):  
Oleg A. Kononenko ◽  
Vitaly V. Milyutin ◽  
Vadim I. Makarenkov ◽  
Evgeny A. Kozlitin
Keyword(s):  
Radioactive Waste ◽  
Liquid Radioactive Waste ◽  
High Salt

scholarly journals Influence of Geopolymer Binder Components on Properties of Compounds during Cementation of Boron-Containing Liquid Radioactive Waste

2021 ◽  
Vol 21 (2) ◽  
pp. 71-77
Author(s):  
Yu. G. Fedorenko ◽  
◽  
Yu. A. Olkhovyk ◽  
A. N. Rozko ◽  
G. P. Pavlyshyn ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Liquid Glass ◽  
Potassium Hydroxide ◽  
Linear Equations ◽  
Liquid Radioactive Waste ◽  
Correlation Coefficients ◽  
Component Composition ◽  
Normative Values ◽  
Leaching Rate ◽  
Base Compound

The paper presents an analysis of the experimental results of the use of geopolymer binders for cementing boron-containing liquid radioactive waste (LRW). The dependence of the properties of compounds on the component composition of binders has been studied. The following components are considered: liquid glass with a silicon modulus of 2.9, a mixture of ash of Darnytsya TPP with slag of the Mariupol metallurgical plant in a ratio of 1: 1 and potassium hydroxide. To perform a factor analysis of the effect, the mass of these substances was taken as three factors in the analysis at two levels. For the manufacture of compounds imitation LRW was mixed with zeolite in a ratio of 10:1 at a temperature of about 60 оC. Subsequently, the above components were added to the mixture, the weight of which varied by ±17% relative to the weight of the base compound. To study the properties, samples of different sizes 5×5×5 cm, 1.5×1.5×1.5 cm and rectangular samples with an outer surface from 96 cm2 to 104 cm2 were made. Each property was studied in 8 samples. The obtained results allowed to construct linear equations that quantitatively link the corresponding characteristic of the compound with the composition of the binders. The correlation coefficients between the experimental and the data calculated by the equation are estimated. The average values of the correlation coefficients may indicate that not all factors were taken into account. The obtained regularities show that in the conditions of the experiment slag and ash increase, and liquid glass and potassium hydroxide reduce the rate of setting of the samples. The density of the samples is increased by ash and slag, while liquid glass and potassium hydroxide are reduced. The compressive strength of liquid glass and potassium hydroxide is reduced, while the mixture of ash and slag is increased. The leaching rate Сs of liquid glass and potassium hydroxide is increased, the mixture of ash and slag is reduced. At the same time, the leaching rate of Sr increases the ash/slag mixture, while liquid glass and potassium hydroxide decrease. The time during which the leaching of Cs reaches the normative values, slag and ash are reduced, and liquid glass and potassium hydroxide are lengthened. The obtained results can be taken into account when optimizing the composition of geopolymer binders for cementing LRW.

Deep Injection Disposal of Liquid Radioactive Waste in Russia, 1963–2002: Results and Consequences

2005 ◽  
pp. 13-19 ◽  
Author(s):  
A.I. Rybalchenko ◽  
M.K. Pimenov ◽  
V.M. Kurochkin ◽  
E.N. Kamnev ◽  
V.M. Korotkevich ◽  
...  
Keyword(s):  
Radioactive Waste ◽  
Liquid Radioactive Waste
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