Evaluation of Cs-137 Binding by High-Moor Peat in the European North of Russia

A. S. Orlov; Орлов А. С.; I. N. Zubov; Зубов И. Н.; E. Yu. Yakovlev; Яковлев Е. Ю.; N. I. Bogdanovich; Богданович Н. И.

doi:10.31857/S0023117723050055

Evaluation of Cs-137 Binding by High-Moor Peat in the European North of Russia

作者: Orlov A.S.¹, Zubov I.N.¹, Yakovlev E.Y.¹, Bogdanovich N.I.²
隶属关系:
1. CENTER FOR COMPREHENSIVE STUDY OF THE ARCTIC NAMED AFTER ACADEMICIAN N.P. LAVEROV URAL BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES
2. Северный (Арктический) федеральный университет им. М.В. Ломоносова (САФУ)
期: 编号 5 (2023)
页面: 50-54
栏目: Articles
URL: https://rjmseer.com/0023-1177/article/view/661788
DOI: https://doi.org/10.31857/S0023117723050055
EDN: https://elibrary.ru/GVDGBN
ID: 661788

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详细

The sorption properties of high-moor peat and products of its sequential disassembly were studied and the binding of Cs-137 by the test materials was evaluated. According to the results of low-temperature nitrogen adsorption, the specific surface area of pores in the test materials varied in a range from 1.48 to 5.96 m2/g, and the total pore volume varied from 0.002 to 0.009 cm3/g. The limiting adsorption of Cs-137 on the test high-moor peat ranged from 1 to 51 Bq/g, which significantly exceeded the background values of
Cs-137 activity determined in the peat deposit and indicated a high sorption capacity of high-moor peatlands with respect to anthropogenic radionuclides. For peat derivatives obtained by the sequential disassembly method, the values of limiting sorption ranged from 2 to 61 Bq/g in the test range of pH. It was revealed that
the pH of the medium and the nature of a sorbent are the key factors determining the efficiency of Cs-137 sorption. It was established that the values of the limiting sorption of Cs-137 for peat and products based on it increased with pH

关键词

high-moor peat, peat structure, chemical treatment, pH, sorption properties, Cs-137

参考

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