Merck

Application of zeolites for radium removal from mine water.

Environmental science and pollution research international (2013-07-25)
Stanisław Chałupnik, Wojciech Franus, Małgorzata Wysocka, Grzegorz Gzyl
ABSTRACT

For removal of radium from saline waters in Upper Silesian mines, several methods of purification have been developed. The most efficient one is based on application of barium chloride, which was implemented in full technical scale in two Polish coal mines several years ago. Very good results of purification have been achieved-the removal efficiency exceeding 95% of the initial activity. Another possibility for the removal of different ions from salty waters and brines is the application of zeolites. We found that technique as a very promising method for removal of not only radium isotopes from mine waters but also other ions (barium, iron, manganese). Treatment of several various water samples has been done to assess the removal efficiency for natural radionuclides. Preliminary results show very good effects for radium isotopes as well as for barium ions. In the paper, a short description of laboratory results of the purification of mine waters with application of synthetic zeolites is presented.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
沸石
Sigma-Aldrich
介孔结构的硅铝酸盐, MCM-41 (hexagonal)
Sigma-Aldrich
钡, dendritic pieces, purified by distillation, 99.99% trace metals basis
Sigma-Aldrich
钡, rod, diam. ~2 cm, ≥99% trace metals basis
Sigma-Aldrich
钡, dendritic pieces, purified by distillation, 99.9% trace metals basis
Sigma-Aldrich
钡, beads, 0.5-2.0 mm particle size, 99% trace metals basis
Sigma-Aldrich
钡, pieces, 1 cm, 99% trace metals basis