Dr
Geun Ho Chung
(Korea Atomic Enegery Research Institute), Dr
Hyuncheol Kim
(Korea Atomic Enegery Research Institute)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Artificial radionuclides are released into the environment as a result of nuclear facility accidents and nuclear weapon testing. Among them, strontium, plutonium and cesium are the most frequently monitored in environmental studies. After Fukushima accident, changes of Cs-134/137 concentrations in seawater adjacent to Fukushima are well documented. However, radiostrontium or plutonium...
Dr
Lee Joung Hae
(Korea Research Institute of Standards and Science)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
As the toxicity of certain element depends very heavily on their physico-chemical form, it is important to be able to monitor levels of the individual species. Arsenic occurs everywhere in the environment in various forms, including trivalent and pentavalent states, inorganic and organic compounds. In general, pentavalent arsenic is considerably less toxic than trivalent arsenic; inorganic...
Ms
Valiantsina Torapava
(Joint Institute for Power and Nuclear Research - Sosny, National Academy of Science of Belarus)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Operation of nuclear power plants and other nuclear industry require solution of the following issues: decontamination of the main equipment and working area, treatment of low radioactive waste (LRW). These problems are closely related to each other, i.e. ineffective treatment of LRW generates large amounts of radioactive waste with complex chemical composition. Behaviour of radionuclides in...
Mr
Timofey Epimakhov
(Vitalevich)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Radiation situation in occupied areas of nuclear reactor plants is much determined by the activity of loose corrosion product deposits (crud) in the primary system. Co-60 present in crud is the major contributor to personnel exposure because it has a long half-life period and emits hard γ-radiation. Experimental studies have been performed to analyze the possibility of reducing Co-60 in crud...
Dr
Seweryn Krajewski
(Institute of Nuclear Chemistry and Technology, Warsaw, Poland)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Inorganic ion exchangers are widely used in the treatment of reactor coolant and aqueous nuclear wastes due to their high selectivity, radiation resistance, thermal and chemical stability. Among other inorganic sorbents, hydrous titanium dioxide was proposed as the prospective sorbent for the efficient separation of fission products such as 137Cs and 90Sr. Recently, new forms of...
Dr
Evgeny Shirshin
(M.V. Lomonosov Moscow State University), Dr
Vladimir Petrov
(M.V. Lomonosov Moscow State University)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
The aqueous chemistry of Uranium(VI) determines its migration in geosphere under oxic conditions and the efficiency of some technological processes like in situ leach uranium mining, thus being extensively studied in geochemistry. Time-resolved laser-induced fluorescence spectroscopy (TRLIFS) is a powerful method that allows one to determine U(VI) speciation both in aqueous solutions and at...
Mrs
Veronika Drábová
(Department of Nuclear Chemistry,Faculty of Natural Sciences, Comenius University in Bratislava, Slovakia 842 15)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
A variety of aqueous radioactive wastes are generated during the operation of reactors and other nuclear fuel cycle facilities. The evaporation of low level effluents is a common operation that gives rise to such wastes in a form of evaporator's concentrates. Concentrated aqueous wastes from a number of sources have variety of chemical/radiochemical composition. Such solutions contain high...
Prof.
Vitaly Epimakhov
(Nikolaevich)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Liquid radioactive waste (LRW) can contain large amounts of emulsified petroleum products and suspended corrosion particles on which radionuclides concentrate. The optimal approach to removal of radionuclides in different physicochemical forms is using adsorption methods together with baromembrane methods such as microfiltration, ultrafiltration, and reverse osmosis. Alexandrov NITI has...
Dr
Steffen Happel
(TrisKem International)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
TBP is a widely used extractant in liquid–liquid extraction, especially in the extraction of actinides, one of its most prominent examples being the Purex process.
A TBP based extraction chromatographic resin has been characterized with respect to its U capacity and the weight distribution ratios (DW) of U, Th, Pu, Np and numerous other cations in different concentrations of HNO3 and HCl....
Prof.
Jerzy-Wojciech Mietelski
(The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences (IFJ PAN))
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Environmental samples are sometimes quite unique – the mass of sample collected frequently on remote locations is limited due to need of transportation by hands. The advantage of analyses of as much as possible radionuclides is obvious. The information obtained from ratios between different nuclides are enlarging our knowledge a lot. Moreover, the efforts devoted for dissolution of sample...
Mr
Xianghai Zhao
(School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, P.R.China)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Discharge of aqueous radioactive waste from nuclear industry has become a major concern all over the world due to its potential to pollute portable water sources. Radiocobalt is one of the most problematic radionuclides in the effluent from nuclear industry because of its high gamma decay energy. A number of methods have been developed to remove these radionuclides from the discharge of...
Dr
Jan Kozempel
(FJFI CVUT), Ms
Lucie Kománková
(FJFI CVUT)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Radium-223 is the first approved alpha emitting radionuclide for use in radionuclide therapy [1]. Radium follows the Calcium metabolism and thus is self targeted to bones. Several generator systems were described in the past [2]. In this study we have focused on a generator system described by Guseva et al. [3], based on a Dowex-1 resin and a mixed methanol/ nitric acid mobile phase. The...
Dr
Dmitry Marinin
(Institute of Chemistry FEBRAS, Vladivostok, Russia)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Here we present the results of study of interrelations between thermal solidification and selective sorption properties of resorcinol-formaldehyde resins of resol type in highly mineralized alkaline media. Using thermal analysis we have observed a series of exo- and endothermal effects, determined the maximum temperature of thermal treatment, and revealed features of resin solidification in...
Ms
Nadezhda Tsarenko
(JSC «Scientific-research institute of chemical technology»)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Extraction and separation of cesium and strontium is an important issue in radiochemistry, how to solve problems relative to the treatment of liquid radioactive waste (LRW), and for analytical purposes. The best extractants suggested for solving this problem are solutions of crown ethers in organic solvents.
This paper presents the results of researches on the extraction of cesium and...
Céline AUGERAY
(IRSN)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Measuring radioactivity in food and for radiological monitoring of the environment around Nuclear Facilities or mining sites purposes requires a quantification of the radioactive isotopes (especially beta emitters) present in the different compartments (liquids or solids).
Strontium 89 and 90 [1], both pure beta emitters are radioactive isotopes of interest. Because of their toxicity and...
Mr
Jakub Raindl
(KJCH - FJFI - ČVUT)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Separation of uranium from natural and waste water is a problem, which has been studied for a long time. For such purpose, many organic and inorganic sorption materials have been proposed and titanium dioxide have shown quite promising results. The first aim of this study was to test and characterize sorption materials based on TiO2 prepared from tetra-n-butylorthotitanate (TBOT) in order to...
Dr
Lórant Szatmáry
(ÚJV Řež, a.s.)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
One the most inportant fission products, considered in radiaoctive waste disposal, is is radioiodine (131I). The most notable iodine radioisotopes are 131I and 129I, with half-life 8 days and 15.7 million years respectively. They have potential radiological effect on the human body and the environment due to of their large nuclear yield, volatility and especially accumulation in thyroid...
Ms
Ruveyda Kubra Ileri
(Istanbul Technical University, Energy Institute)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Some components of nuclear wastes like 79Se should be taken into consideration due to extremely long half-lives and potential migration ability through the environment. Clay minerals are suggested as a barrier material in radioactive waste management; however they have some deficiencies to retard anionic radioisotopes like selenium due to structural properties. Modification of these minerals...
Dr
Anna Voronina
(Ural Federal University)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Sorption method of liquid radioactive wastes (LRW) treatment with further immobilization of radionuclides into mineral-similar sorbents is suggested in this work. Described method can be used for decontamination of LRW from long-lived radionuclides 137Cs and 90Sr; it differs from other methods in higher efficiency of separation of radionuclides as well as in combination of stages of...
Ms
Magdalena Rejnis
(Institute of Nuclear Chemistry and Technology)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
N,N,N′,N′-tetraoctyl-diglycolamide (TODGA) is broadly studied as a non-specific extractant for actinides and lanthanides from HNO3 solutions of nuclear waste, in particular for group actinide extraction (GANEX process). Unfortunately, some fission products including technetium (in the form of pertechnetate anion, 99TcO4–) are also efficiently extracted from HNO3 solutions to the...
Prof.
Aleksander Bilewicz
(Institute of Nuclear Chemistry and Technology)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Radioactive waste contains a variety of radionuclides and arises in a variety of physical and chemical forms. In Poland, the amount of activity and waste volume of liquid wastes are relatively small, mostly from operation of research reactor. Despite of the low level radioactivity involved, there are many significant hazards that could arise as a result of inadequate management. Treatment of...
Dr
Jan Kozempel
(FJFI CVUT)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Groving interest in the research of radium chemistry, its use as target material in nuclear reaction studies and preparation of calibration sources leads to a higher demand for 226Ra in readily available soluble form. Aged radium needle sources containing very insoluble radiobarite may serve as source material of 226Ra and its decay products (e.g. 210Pb). We descibe here several methods for...
Ms
Yulia Buchatskaya
(Czech Technical University in Prague)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Detonation nanodiamonds (DND) are potentially promising candidate for sorption applications due to their unique properties: high surface area, highly developed surface, low weight, chemical and radiation resistance. The oxygen-containing groups on the DND surface are responsible for the cation-exchange properties. The sorption capacity of DND is found to be comparable with other carbon...
Dr
Jan Kameník
(Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 115 19 Prague 1, Czech Republic)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Several extraction agents with functional group of diphenyl-carbamoylmethylphosphine oxide were synthetized and tested in the frame of EUROPART project for actinoids partitioning from nitric acid solutions. Functional groups were chemically bonded with a platform of tert-butylcalix[4]arene, O-pentylcalix[4]arene, and cobalt bis(dicarbollide) cluster ion to enhance extraction properties. The...
Prof.
Pavol Rajec
(Faculty of Natural Science, Comeniues University, Bratislava)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Activated carbon can potentially be used as an adsorbent for removing Tc from aqueous solutions. We have prepared and tested five carbon materials for their capabilities for sorption of pertechnetate (TcO4−). A carbon materials were prepared by soaking of fibrous cellulose with different solutions containing inorganic materials suitable for creation of micropores and after drying, material...
Dr
Hyuncheol Kim
(Korea Atomic Energy Research Institute, Environmental Radioactivity Assessment Team), Dr
Jong Myoung Lim
(Korea Atomic Energy Research Institute, Environmental Radioactivity Assessment Team), Dr
Kun Ho Chung
(Korea Atomic Energy Research Institute, Environmental Radioactivity Assessment Team)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Milk is one of the special important matrices to be rapidly assessed its radioactive contamination in emergency situations such as a nuclear plant accident. Because of its chemical and biological similarities to calcium in milk, radiostrontium can be incorporated into human organism, preferentially in bone tissue, by milk ingestion. Development of rapid analytical methods for radiostrontium in...
Prof.
Vitaly Epimakhov
(Nikolaevich)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
A rapid chromatographic method of radiochemical analysis based on adsorption of radionuclides onto selective pellet sorbents is successfully used for rapidly determining gamma-emitting radionuclides in water [1]. The paper presents a membrane-adsorption method for rapid determination of a- and β-emitting radionuclides. Like the above analysis for gamma-emitters, the proposed method separates...
Mrs
Marta Pyszynska
(Institute Of Nuclear Chemistry And Technology)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Among the fission products of U-235 are: Sr-90 and Tc-99. Information on their content in primary coolant water is very important because it indicates the state of the fuel rods in NPP. Different analytical methods could be used for the determination of Tc-99 and Sr-90, however each method requires separation and/or preconcentration of determined radionulide. The problems are also related to...
Kamila Šťastná
(Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Two liquid liquid extraction processes intended as a part of the Partitioning and Transmutation strategy have been used as a basis for development of chromatographic systems for separation of curium from americium. The liquid organic phase of the EXAm process was replaced by DMDOHEMA-PAN composite sorbent and TEDGA in nitric acid solution was employed as an aqueous-phase complexing agent. The...
Dr
Alena Tokárová
(University of defense)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
The solvent extraction was described for determination of the plutonium presented in the environmental samples. Tri-n-octylphosphine oxide (TOPO) and di-2-ethylhexyl phosphoric acid (HDEHP) were used as the significant reagent of extractants of the plutonium. The extraction properties of TOPO and HDEHP for tetravalent plutonium in 5 mol.L-1 HNO3 into toluene were investigated. The optimal...
Ms
Anna Rubailo
(Yurievna)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Uranium is one of the most dangerous radionuclides which makes a major contribution to the total alpha-activity of liquid nuclear wastes.
The most promising method for the extraction of radionuclides, including uranium from aqueous media is solid phase extraction. In the last time, different inorganic sorbents (including natural zeolites) having certain advantages over synthetic organic...
Dr
Jan Kameník
(Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 115 19 Prague 1, Czech Republic)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Octyl(phenyl)-N,N'-diisobutylcarbamoylmethylphosphine oxide (CMPO) extraction agent and polyacrylonitrile (PAN) as binding polymer were used for production of CMPO-PAN solid extractant. The material was previously studied for application in column chromatography for actinoids separation [1]. High uptake of americium and europium on CMPO-PAN solid extractant was observed in diluted nitric acid...
Mrs
Irena Spendlikova
(CTU in Prague), Mr
Petr Distler
(CTU in Prague)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Distler P.*, Spendlikova I.*, Burdet F.+, Miguirditchian M.+
*CTU in Prague, Brehova 7, 115 19 Prague 1, Czech Republic
+CEA Marcoule, Nuclear Energy Division, Radiochemistry & Processes Department, SMCS/LEPS, Bagnols-sur-Cèze, F-30207, France
In the frame of the development of the French CEA EXAm process (Am selective separation from a PUREX raffinate by solvent extraction), the...
Mr
Alexey Safonov
(Frumkin"s Institute of Physical Chemistry Russian Academy of Science), Dr
Konstantin German
(Frumkin"s Institute of Physical Chemistry Russian Academy of Science)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
K.E. German1,2, A.A. Shiryaev1, A.V. Safonov1,2, Ya. A. Obruchnikova1,2,3, V.A. Ilin1,2,
M.N. Glazkova2, V.E. Tregubova1,2, S.N. Kalmykov4, E.V Abkhalimov1
1 – Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Moscow, Russia
2 – Moscow Medical InstituteREAVIZ, Moscow Russia
3 – Mendeleev Russian Chemical Technology University, Moscow, Russia
4 – Lomonosov Moscow State...
Prof.
Nikolay Kizim
(Fedorovitch)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Formation of cruds at the extraction of metals is the negative phenomenon as reduces the rate of extraction, worsens disintegration of the emulsions, and leads to loss extragent and an extractive element. In practice to prevent the formation of structure in an interfacial layer in system aliphatic alcohols add to aliphatic alcohols, for example, octanol - 1. However there are additional losses...
Dr
Remez Victor
(Ecsorb, the Compamy)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
The recently developed apparatus named System СА® (Kit “Анфеж®”) and the procedure of its effective application for the concentration and determinination of low levels of radiocesium contamination in liquid media is discussed. The liquid media which can be analyzed by the System СА® include sea water, fresh water, drinking water, wine, milk, juice, human urine etc. The apparatus is designated...
157.
Thermodynamics and separation factor of uranium from lanthanum on gallium-indium eutectic alloy
Prof.
Alena Novoselova
(Institute of High-Temperature Electrochemistry UD RAS), Prof.
Valeri Smolenski
(Institute of High-Temperature Electrochemistry UD RAS), Ms
Yana Luk’yanova
(State Scientific Centre -Research Institute of Atomic Reactors)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Actinides recycling by separation and transmutation are considered worldwide as one of the most promising strategies for more efficient use of the nuclear fuel as well as for nuclear waste minimization, thus contributing to make nuclear energy sustainable. With this purpose, two major fuel reprocessing technologies have been explored so far to separate the actinides from the fission products...
Mr
Bogdan WĄs
(The Henryk Niewodniczański Institute of Nuclear Physics Polish Academy of Sciences, Cracow, Poland), Dr
Ryszard Misiak
(The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Cracow, Poland)
12/05/2014, 17:15
Separation Methods, Speciation
Poster
Among neutron deficient Tc isotopes, 95mTc is a useful radiotracer due to a relatively long half-life (t1/2=61 d), and high abundance of its gamma-rays. It can be used for studying of a behavior of 99Tc in the environment and waste disposal, as well as in the development of new radiopharmaceuticals of 94m, 99mTc. Radioisotope 95mTc can be...
