ICEM11 Final Program 9.7.11pm_ICEM07 Final Program ... - Events

Session 42 Abstracts
The Institute for Chemistry of the Russian Academy of Sciences has applied the method of hydrothermal treatment (at elevated
temperature and pressure, 200 °C, 200 bar), supported by Hydrogen peroxide oxidation, to allow virtually complete removal of
radioactive nuclides on inorganic ion exchangers.
Pilot plants have been operated successfully in Russian power stations, and an…
2) DECONTAMINATION OF STRONTIUM FROM LIQUID RADIOACTIVE
WASTES BY SODIUM NONATITANATE (wP-59083)
Merceille Aurélie, CEA Marcoule; Agnès Grandjean, Institut de Chimie Séparative de Marcoule;
Yves Barre, CEA Marcoule (France)
Environmental impact of toxic, biological and radioactive pollutants release is of great importance for all industrial societies
today. The development of efficient process for purification filtration and waste removal- of these industrials effluents is booming.[1]
Nuclear industry produces a wide range of radioactive liquid effluents. Many of these wastes need treatment in order to
reduce the quantities of radioactive contaminants and of course to reduce human exposure. 90Sr is one of the major pollutants in
nuclear liquid wastes. A promising way for extraction of this radioelement from mobile phase (liquid) to a solid phase is the use of
specific ion exchange solids. Contrary to conventional organic ion exchange resins, inorganic ion exchangers possess a number of
advantages such as superior chemical, thermal and radiation stability.
For strontium removal from aqueous solutions, many inorganic ion exchange solids are described in the literature. One of them
is sodium nonatitanate [3] which seems to be a very good candidate for this use. We present here a study of the effect of synthesis
temperature on the kinetics and on the adsorption capacity of this ion exchanger [2]. For this purpose, first, three materials were
synthesized at 100°C, 160°C and 200°C. They were compared thanks…
3) RUSSIA: RESULTS AND PROSPECTS OF LIQUID SOLIDIFICATION
EXPERIMENTS AT ROSATOM SITES (w/oP-59112)
Dennis Kelley, Pacific Nuclear Solutions (USA)
Ongoing experimental work has been underway at selected nuclear sites in the Russian State Atomic Energy Corporation
(ROSATOM) during the past two years to determine the effectiveness, reliability, application and acceptability of high technology
polymers for liquid radioactive waste solidification. The long term project is funded by the U.S. Department of Energys Initiatives
for Proliferation Prevention (IPP) program. IPP was established in 1994 as a non-proliferation program of DOE / National Nuclear
Security Administration and receives its funding each year through Congressional appropriation. The primary objective of IPP is
to engage former Soviet nuclear weapons scientists, currently or formerly involved with weapons of mass destruction, in peaceful
and sustainable commercial activities.
Argonne National Laboratory provides management oversight for this project. More than 60 former weapons scientists are
engaged in this project.
With the project entering its mid-point, the emphasis is now on expanding the experimental work to include the sub-sites of
Seversk (SCC), Zheleznogorsk (MCC) located in Siberia and Gatchyna (KRI) and applying the polymer technology to actual problematic
waste streams. Work to date includes the solidification of over 100 waste streams for the purpose of evaluating all aspects
of the polymers effectiveness with LLW and ILW complex waste. Waste…
4) PRE-TREATMENT OF ORGANIC LIQUID WASTE STREAM AT CERNAVODA NPP (w/oP-59079)
Gabriela Teodorov, Laszlo Toro, Adina Sandru, MATEFIN; Dennis Kelley, Pacific Nuclear Solutions;
Dorin Dumitrescu, NPP Cernavoda (Romania/ USA)
The radioactive waste management system at Cernavoda Nuclear Power Plant (NPP) was designed to maintain acceptable levels
of safety for workers and to protect human health and the environment from exposure to unacceptable levels of radiation.
During the ten years operation of the Cernavoda NPP, a series of waste streams have been developed for waste management
purpose. Some of these streams consist of radioactive organic liquid wastes: spent oils, spent solvents, liquid scintillation cocktails
(LSC), flammable solids (solid-organic liquid mixture) and sludge.
Effective treatment of organic liquids waste from the initial to the final stage has been a challenge for NPP Cernavoda. All components
of the organic liquid waste stream have been stored in liquid form in stainless steel drums in the Solid Radioactive Waste
Intermediate Storage Facility (SRWISF). This facility was originally designed for solid wastes only, consequently, the regulatory
body has asked Cernavoda NPP to remove the flammable liquids from this repository as soon as possible.
As a result, at the end of 2008, Cernavoda NPP initiated the solidification of organic liquid wastes (both historical and fresh
wastes) together with a separation of solids associated with the organic liquids. In accordance with terminology of the International
Atomic Energy…
5) TRANSPORT AND DEPOSITION PROPERTIES OF MODEL SLURRIES
OF ONE AND TWO PARTICLE SPECIES (wP-59140)
Hugh Rice, Simon Biggs, Michael Fairweather, James Young, University of Leeds, Leeds, (UK)
The UK nuclear industry has in its inventory legacy waste in the form of complex, polydisperse and polydense suspensions,
slurries and sludges in a variety of storage and transport vessels. This waste has been difficult to characterise because of radioactivity
and limited accessibility, and containment and disposal of the waste presents a continuing challenge. Our objectives are to
investigate the effect of mono- and bidisperse suspensions with a range of particle sizes and densities on the turbulence characteristics
and transport and settling behaviour of slurries that are chosen to be analogues of those found on nuclear sites. Two versatile
slurry pipe-flow loops of different diameters have been commissioned which can be operated over a large range of Reynolds numbers
and are amenable to ultrasonic, optical and physical measurement methods. In addition, a variety of particle characterisation
studies have been performed on the particle species that form the suspensions. In particular, the effect of settled beds on the flow
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