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Radionuclides in Soil-Water-Plant System

#T-1147


Learning of Migration of Radionuclides in Soil-Water-Plant System

Tech Area / Field

  • ENV-RED/Remediation and Decontamination/Environment
  • ENV-RWT/Radioactive Waste Treatment/Environment

Status
3 Approved without Funding

Registration date
08.04.2004

Leading Institute
Tajik State National University, Tajikistan, Dushanbe

Project summary

The goal of the project is learning the migration of long lasting radionuclides 231Th, 235U, 228Ra, products of fission 90Sr, 91Y, 137Cs, 58Co, 56Fe, 54Mn, 58Co in soil-water-plant system.

In general no detailed researches to determine migration of radionuclide in soil-water-plant system, had been performed in our country, in particular migration of such long lasting radionuclides as 231Th, 235U, 228Ra and products of fission 90Sr, 91Y, 137Cs, 58Co, 56Fe, 54Mn, 58Co and influence of ph acid, salt containment, chemical content of soil, forms of radionuclide location, vertical migration in soil-water-plant system had ever been conducted. Isotope content is not identified, also is not identified the collection coefficient, speed of diffusion and self-diffusion and mechanism of nuclide collection in different parts of plant organism. Decision of given tasks will give opportunity to find out mechanism of accumulation and vertical distribution of inpidual forms of radionuclides in different parts of plant organism, to develop mathematical model of radionuclide migration. Undoubtedly, results of research allow us to define the group of plants, which can accumulate the highest levels of radionuclides and recommend them as trap for radionuclides.

Participants of the project are specialists in the field of radiochemistry, physics and colloid chemistry and chemical technology and possess adequate expertise in solving problems that are of fundamental and supplemental benefit. Practical value of the project is the recommendation of specific kind of plants that collect from soil such nuclides as 231Th, 235U, 228Ra and others. These kinds of plants will be recommended for seeding on places where high level of pollution occurs.

According to data of the Environment Ministry of Republic of Tajikistan volumes of accumulation of "tails" (conserved and working) to the present time are more than 210 million tons. The area engaged under them occupies more than thousand hectares. The majority of "tails" has no sufficient covering and represents the large ecological danger. It’s planning that; the results of our experiments will be applied in these territories.

Proposed project is in line with the goals of ISTC for realizing re-orientation of armor scientists to peaceful activity and their integration to international scientific community.

Volume of work to be done according to project is for three years (36 months) with usage of modern physics-chemical and atomic-physics methods, implementation of computer technology for handling theoretical calculations, investigation and analysis of experimental data.

The role of foreign collaborators is the primary element in successful execution of quality research project, its expertise, evaluation of quality and outcomes of work, and realization of technological aspects and their cooperation will give us the guarantee of successful completion of project tasks.


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