Physical and chemical substantiation of decontamination of the 5th district of Vasilievsky Island in St. Petersburg from strontium-90 contamination

D. E. Chirkst; T. E. Litvinova; O. V. Cheremisina; M. V. Ivanov

Vol 154

Pages:

32-37

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Research article

Safety problems of radiation, electromagnetic and other dangerous influence on people

Physical and chemical substantiation of decontamination of the 5th district of Vasilievsky Island in St. Petersburg from strontium-90 contamination

Authors:

D. E. Chirkst¹

T. E. Litvinova²

O. V. Cheremisina³

M. V. Ivanov⁴

About authors

1 — G.V. Plekhanov Saint Petersburg Mining University
2 — G.V. Plekhanov Saint Petersburg Mining University
3 — G.V. Plekhanov Saint Petersburg Mining University
4 — G.V. Plekhanov Saint Petersburg Mining University

Date submitted:

2002-08-16

Date accepted:

2002-09-18

Date published:

2003-11-13

Abstract

In order to calculate parameters of purification of soils from 90 Sr the exchange isotherm of Sr 2+ Ha cations of iron (III) between Cambrian clay and aqueous solution with pH = 3 was studied. Isotherms of joint cation adsorption in joint presence are described by the Langmuir equation. Using the values of the Langmuir constants, the Gibbs constant and energy of ion exchange equal to 15 and -6.7 kJ/mol, respectively, were calculated. These values coincide with those calculated from the individual adsorption isotherms of Sr 2+ and Fe (III) cations on clay. According to the obtained constants it is possible to deactivate soils from 90 Sr contamination by means of ion-exchange washing with solutions of iron (III) salts, which is confirmed by field studies in the 5th quarter of Vasilievsky Island. The performed technical-economic assessment of the decontamination of the 5th quarter shows that the washing cleaning will give an economic effect of about 150 million rubles compared to soil removal and burial.

Чиркст Д.Э., Литвинова Т.Е., Черемисина О.В., Иванов М.В. Физико-химическое обоснование дезактивации 5-го квартала Васильевского острова Санкт-Петербурга от загрязнения стронцием-90 // Записки Горного института. 2003. Т. 154 . С. 32-37.

Chirkst D.E., Litvinova T.E., Cheremisina O.V., Ivanov M.V. Physical and chemical substantiation of decontamination of the 5th district of Vasilievsky Island in St. Petersburg from strontium-90 contamination // Journal of Mining Institute. 2003. Vol. 154 . p. 32-37.

References

Разработка физико-химических основ и опытной технологии дезактивации грунтов от загрязнения радионуклидами цезия и стронция / Д.Э.Чиркст, Т.Е.Литвинова, О.В.Черемисина, М.И.Стрелецкая, М.В.Иванов, Н.А.Мироненкова // Записки Горного института. СПб, 2001. Т.149.
Термические константы вешеств: Справочник / Ред. В.П.Глушко М.: Изд-во АН СССР, 1972. 1.6.

Physical and chemical substantiation of decontamination of the 5th district of Vasilievsky Island in St. Petersburg from strontium-90 contamination

Abstract

References

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