scholarly journals Investigation of Spectral Characteristics of Pulsed Xenon Lamps for Combined Photochemical Degradation of Organometallic Compounds in Liquid Radioactive Waste

2017 ◽  
Vol 17 (06) ◽  
pp. 29-41
Author(s):  
M Mishakov ◽  
A Kamrukov
Keyword(s):  
Radioactive Waste ◽  
Liquid Radioactive Waste ◽  
Spectral Characteristics ◽  
Organometallic Compounds ◽  
Photochemical Degradation ◽  
Xenon Lamps

scholarly journals Modern Oxidizing and Photo Oxidative Methods of Complexons Destruction in Liquid Radioactive Waste

10.12737/8234 ◽  
2015 ◽  
Vol 4 (1) ◽  
pp. 68-83
Author(s):  
Камруков ◽  
A. Kamrukov ◽  
Новиков ◽  
D. Novikov
Keyword(s):  
Hydrogen Peroxide ◽  
Radioactive Waste ◽  
Potassium Permanganate ◽  
Uv Radiation ◽  
Production Efficiency ◽  
Liquid Radioactive Waste ◽  
Special Equipment ◽  
Processing Efficiency ◽  
Wide Range ◽  
Xenon Lamps

State-of-the-art analysis for oxidizing technologies related to destruction of complexons and metalloorganic complexes in liquid radioactive waste has been carried out. Ways already put into practice, as well as the experimental ones have been considered. Oxidation by potassium permanganate and hydrogen peroxide and also ozonization and photo oxidation have been considered in detail. It has been shown that oxidation by potassium permanganate with subsequent filtration leads to decrease of isotopes activity, but hereby a considerable volume of manganese dioxide is formed. The ozonization application allows reduce considerably the liquid radioactive waste (LRW) volume, but along with this ozone is the extremely toxic and explosive substance demanding a special equipment for its production. Efficiency of oxidation by hydrogen peroxide and photo oxidation without catalysts is low. The special attention has been paid to combined oxidizing methods (AOP) based on use of ultra-violet (UV) radiation together with ozone and/or hydrogen peroxide. Such methods allow apply the strongest oxidizer – hydroxyl radical – for LRW processing. Efficiency of AOP-methods and their technological capabilities are substantially defined by characteristics of used UV radiation sources. A detailed analysis for a wide range of UV radiation possible sources (low and average pressure mercury lamps, amalgamate lamps, excimer lamps, light-emitting diodes and pulse xenon lamps) has been carried out, their comparative assessment has been executed. Great potential opportunities for the pulse xenon lamps providing a continuous range of radiation in UV area and high intensity for a stream of high-vigorous photons have been noted.

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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