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Recrystallization of Ra-223 with barium sulfate

Natallia Torapava (Institutionen för kemi- och bioteknik, Kärnkemi) ; Henrik Ramebäck (Institutionen för kemi- och bioteknik, Kärnkemi) ; E. Curti ; P. Lagerkvist ; Christian Ekberg (Institutionen för kemi- och bioteknik, Kärnkemi)
Journal of Radioanalytical and Nuclear Chemistry (0236-5731). Vol. 301 (2014), 2, p. 545-553.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Radium, Barite, Recrystallization, Kinetics, Nuclear waste



Denna post skapades 2014-09-25. Senast ändrad 2016-11-08.
CPL Pubid: 203291

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kärnkemi (2005-2014)

Ämnesområden

Kinetik
Kärnkemi

Chalmers infrastruktur