Interaction of 99Tc onto bentonite and influence of Fe(II) and (Ca, Mg) ion exchange in its interlayers

Radiochemistry

“…Bentonite 317 has been extensively investigated during the past year, especially its ability to adsorb radioactive nickel, 318 cobalt, 319 strontium, 320,321 caesium 321,322 and uranium. 323 But the changes that it undergoes, both physically 324 and chemically 325,326 as a result of prolonged contact with radioactive materials has also been studied. Montmorillonite [327][328][329] has been subject to similar investigations.…”

Rhenium(VII) and technetium(VII) separation from aqueous solutions using a polyethylenimine–epichlorohydrin resin

“…A number of raw and modified natural [9][10][11][12][13][14][15][16] as well as synthetic materials [17][18][19][20][21][22][23][24][25][26][27][28][29] have already been investigated as technetium and rhenium sorbents and extractants from aqueous solutions. Biomaterials and modified biomaterials were also studied for the removal of Re(VII) from waters [30][31][32].…”