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

Abstracts Session 43
velocity and turbulence characteristics and of inter-species interactions in bidisperse suspensions has been investigated. Results of
particle characterisation are presented, along with mean and turbulent velocity profiles over a range of Reynolds number and particle
concentration. The implications of the work for waste processing within the industrial context will be discussed in the full
paper.
6) APPLICATION OF A NEW TECHNOLOGY FOR REPROCESSING OF WASTES WITHIN THE FRAMEWORK
OF REHABILITATION OF URANIUM MINES OPERATED BY IN SITU LEACHING (wP-59403)
Gagik Martoyan, Garik Nalbandyan, Lavrenti Gagiyan,
AREV SI CJS Company; Gagik Karamyan, Artak Barseghyan, Gagik Brutyan, Ecoatom LLC (Armenia)
It is essential the environmentally safe industrial production of nuclear fuel especially in the case of uranium extraction by In
Situ Leaching, when the environment and the deep extraction of uranium are important problems. In the presented paper it is studied
the feasibility of the application of an electrodialysis method for the deep extraction of uranium and radium from liquid (acid)
streams. It is proposed to apply a new electrodialysis method to ensure the necessary extraction level of elements. In the same time
the new method ensures the recycling of acids used in the process.
7) A FULLY OPERATIONAL PILOT PLANT FOR ELIMINATING RADIOACTIVE
OILS MIXED WITH CHLORINATED SOLVENTS (wP-59044)
Albert Jacobs, William Everett, Dewdrops Company (France)
Disposal of organic liquid waste has become an increasing issue for many nuclear sites. Existing disposal solutions such as
incineration or super critical water techniques are not compatible with wastes containing chlorinated solvents or fluorine owing to
corrosion problems. As an example several hundred cubic meters of lubricating oils mixed with trichloroethylene (TCE) or perchloroethylene
(PCE) are stockpiled on several French nuclear sites. For several years Dewdrops has been developing an original
combination of mineralization processes for waste oils and solvents particularly well suited to the nuclear field. The patented technology
relies on the alternation of chemical and biological oxidation mechanisms. The oxidized organic material predominately
forms carbon dioxide, water and inorganic salts. This paper details the procedure and the results obtained for a particular case at
the Tricastin nuclear site of Areva NC (South France). The organic waste used in this study was a 85/15 v/v ratio mix of lubricating
oil and TCE. The pilot plant build upon the technology has a daily treatment capacity of approximately 10 liters. In the first
step the TCE is mineralized by the photo Fenton reaction. Using hydrogen peroxide with an ultraviolet regenerated iron catalyst,
TCE is transformed to carbon dioxide, water and…
8) ADSORPTION OF CESIUM RADIONUCLIDES BY THE COMPOSITE SORBENTS
CARBON FIBER/TRANSITION METALS FERROCYANIDES (wP-59255)
Irina Sheveleva, Veniamin Zheleznov, Svetlana Bratskaya, Valeriy Kuryavyi,
Valentin Avramenko, Institute of Chemistry FEBRAS (Russia)
Among various methods of cesium removal from aqueous solutions, sorption using transition metals (Ni, Zn, Cu, Fe) ferrocyanides
is the most efficient method due to extremely high affinity of cesium ions to ferrocyanides. Preparation of selective sorbents
by fixation of ferrocyanides crystals in porous matrix of natural clinoptilolite, synthetic zeolites, alumosilicates, and carbon
materials is an efficient way to increase decontamination factors and reduce sorbents expenditure in treatment of 137Cs-containing
wastewaters.
It is known that the efficiency of transition metals ferrocyanides application depends on the crystal size being the highest for
nanocrystals. Although nanocrystals are difficult to handle in a direct application, they can be used in composite materials. In this
case two main problems arise: how to control the crystal size of transition metals ferrocyanides and how to fix them reliably in the
supporting matrix.
In this paper we suggest a new route to preparation of composite materials selective to cesium ions using transition metals ferrocyanides
stabilized by siloxane-acrylate latexes. The size of transition metals ferrocyanides is controlled by the size of the latex
particles and their stability is determined by ionization of polyacrylic acid carboxylic groups on the functionalized latex surface.
These functionalized particles can be used as…
SESSION 43 — SITING, DESIGN, CONSTRUCTION, AND OPERATION
OF L/ILW DISPOSAL FACILITIES - PART 2 OF 2 (1.19)
1) 20 YEARS OF OPERATION FOR CENTRE DE L’AUBE
DISPOSAL FACILITY: LESSONS LEARNED (w/oP-59235)
Patrice Torres, Laurent Schacherer, Franck Duret, Pascal Lecoq, Alain Delaplanche, Michel Dutzer, Andra (France)
The presentation will show the evolution of the facility during thes 20 years: in terms of deliveries, of type of waste packages,
in terms of lexibility to answer the needs of waste generators, in terms of disposal vault design. Lessons leanrd will be emphasized.
It will provide information on the environmental monitoring of the facility.
2) DEMONSTRATION TEST OF UNDERGROUND CAVERN-TYPE
DISPOSAL FACILITIES FISCAL 2010 STATUS (w/oP-59180)
Yoshihiro Akiyama, Kenji Terada, Nobuaki Oda, Tsutomu Yada,
Takahiro Nakajima, Radioactive Waste Management Funding And Research Center (Japan)
The underground cavern-type disposal facilities for low-level waste (LLW) with relatively high radioactivity levels mainly generated
from power reactor decommissioning and for part of transuranic (TRU) waste mainly from spent fuel reprocessing are
designed to be constructed in a cavern around 100 meters below ground, and to employ an engineered barrier system (EBS) of a
combination of bentonite and cement materials in Japan. In order to advance the feasibility study for this disposal, The Demonstration
Test for Underground Cavern-Type Disposal Facilities has commissioned by Japanese government since fiscal 2005, and since
fiscal 2007 a full-scale mock-up test facilities has been constructed under actual subsurface environment. The main objective of the
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