Recrystallization of Ra-223 with barium sulfate
Artikel i vetenskaplig tidskrift, 2014

In this work, the kinetics of barium sulfate recrystallization has been studied in acidic 0.01 mol dm -3 sodium sulfate solution using Ra-223 and Ba-133 tracers at very low total radium concentration, i. e. less than 10(-13) mol dm(-3). It was found that the system follows the homogeneous recrystallization model and that recrystallization rates, inferred by the decrease of Ra-223 and Ba-133 in the aqueous solution, are fast. Therefore, even at very low concentrations, below the solubility limit, radium will be retained by barium sulfate-a mineral present in the deep underground repository.

Radium

Recrystallization

Barite

Kinetics

Nuclear waste

Författare

Natallia Torapava

Chalmers, Kemi- och bioteknik, Kärnkemi

Henrik Ramebäck

Chalmers, Kemi- och bioteknik, Kärnkemi

E. Curti

Paul Scherrer Institut

Petra Lagerkvist

Totalförsvarets forskningsinstitut (FOI)

Christian Ekberg

Chalmers, Kemi- och bioteknik, Kärnkemi

Journal of Radioanalytical and Nuclear Chemistry

0236-5731 (ISSN) 1588-2780 (eISSN)

Vol. 301 545-553

Ämneskategorier

Fysikalisk kemi

DOI

10.1007/s10967-014-3170-6