Collect. Czech. Chem. Commun.
1986, 51, 2455-2461
https://doi.org/10.1135/cccc19862455
A study of the sorption of strontium ions on α-FeOOH
Karel Vaněka and Věra Jedinákováb
a Institute of Nuclear Fuels, 255 48 Prague 5-Zbraslav
b Department of Nuclear Fuel Technology and Radiochemistry, Prague Institute of Chemical Technology, 166 28 Prague 6
Abstract
The sorption of strontium ions on the solid liquid interface of the α-FeOOH-0.1M-NaNO3 system was studied over a wide concentration region of strontium ions and a constant concentration of sorbent so that crel = csorbent/csorbate was 101-104. The ΔG value of the sorption varies with crel and pH; it is as low as -32 kJ mol-1 at crel = 10 000 and pH 11 and increases to -18 kJ mol-1 at crel = 10 and pH 7.5. None of the conventional sorption equations can be applied to the studied system over the entire concentration region, but an equation of a different form is suggested for the description of this system.
