Concentrating cesium-137 from seawater using resorcinol-formaldehyde resin for radioecological monitoring
Author:
Egorin Andrei12, Palamarchuk Marina1, Tokar Eduard12, Tutov Mikhail12, Marinin Dmitry1, Avramenko Valentin12
Affiliation:
1. Institute of Chemistry FEBRAS, 159 Pr-t 100-letiya Vladivostoka, Vladivostok 690022, Russia 2. Far Eastern Federal University, Sukhanova st. 8, Vladivostok, 690000, Russia
Abstract
Abstract
A method of preconcentrating cesium-137 from seawater using a resorcinol-formaldehyde resin, which enables one to optimize the ecological monitoring procedure, has been suggested. Studies of sorption of cesium-137 from seawater by resorcinol-formaldehyde resin have been performed, and it has been demonstrated that the cation exchanger is characterized by high selectivity with respect to cesium-137. It was found that the selectivity depended on the temperature of resin solidification and the seawater pH value. The maximal value of the cesium-137 distribution coefficient is equal to 4.1–4.5×103 cm3 g−1. Under dynamic conditions, the ion-exchange resin capacity is 310–910 bed volumes depending on the seawater pH, whereas the efficiency of cesium removal exceeds 95%. The removal of more than 95% of cesium-137 has been attained using 1–3 M solutions of nitric acid: here, the eluate volume was 8–8.4 bed volumes. Application of 3 M solution of nitric acid results in resin degradation with the release of gaseous products.
Funder
Russian Science Foundation
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry
Reference21 articles.
1. Wolfgang, N.: Nuclear waste management in the EU: growing volumes and no solution. Hanover (2010), p. 86. 2. Sivintsev, Yu. V., Vakulovsky, S. M., Vasiliev A. P., Vysotsky, V. L., Gubin, A. T., Danielyan, V. A., Kobzev, V. I., Kryshev I. I., Lavkovsky, S. A., Mazokin, V. A.: Man-made radionuclides in seas around the Russia coastline: Radioecological impact of removal of radioactive waste streams into Arctic and Far East seas (“White Book-2000). IzdAT, Moscow (2005), p. 624. 3. Bandong, B. B., Volpe, A. M., Esser, B. K., Bianchini, G. M.: Pre-concentration and measurement of low levels of gamma-ray emitting radioisotopes in coastal waters. Appl. Radiat. Isot. 55, 653 (2001). 4. Zheleznov, V. V., Vysotskii, V. L.: Application of fibrous carbon ferrocyanide sorbents for removing cesium and cobalt from large volumes of sea water. At. Energy. 92, 493 (2002). 5. Nakanishi, T., Aono, T., Yamada, M., Kusakabe, M.: Temporal and spatial variations of 137Cs in the waters off a nuclear fuel reprocessing facility in Rokkasho, Aomori, Japan. J. Radioanal. Nucl. Chem. 283, 831 (2009).
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|