Bentonite stability, speciation and migration behaviour of some critical radionuclides

Jedináková-Křížová, V.; Zeman, Josef; Vinšová, Hana; Hanslík, Eduard

doi:10.1007/s10967-010-0796-x

Cited by 11 publications

(1 citation statement)

References 12 publications

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“…The main clay mineral of bentonite is montmorillonite, which is a good sorbent because it has a large specific surface area and high cation exchange capacity. Shakira et al [15], Vinsova, [16] Jedináková-Křížová [17]; Jaisi [18]; Milutinović-Nikolić [19], Hamárová [20] dealt with modified clays, for example Vinsova et al [16] used mixtures of bentonite, bentonite activated carbon, iron powder, FeSO 4 and graphite to bind pertechnetate ions.…”

Section: Introductionmentioning

confidence: 99%

Sorption of pertechnetate anion by cation modified bentonites

Buzetzky

Kovács

Nagy

et al. 2019

J Radioanal Nucl Chem

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Pertechnetate anion sorption was investigated on modified bentonites. Mn-, Cr-, Sn-bentonites were prepared by ion exchange process to sorb radioactive pertechnetate ions. In the case of Mn-, Cr-bentonite the sorb amount of metal ion was 70-90% of the cation exchange capacity of the bentonite which is expected. Interestingly in the case of Sn-bentonite this amount was 1.42 times higher than the cation exchange capacity. On Mn-bentonite the sorption was 35% at pH 5. The removal of pertechnetate ions was 100% on Cr-, Sn-bentonites and the significant sorption was achieved below 650 mV/SHE.

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