Abstract
A method of hydrolytic lignine modification by treatment with sodium hydroxide concentrated solution has been proposed. The optimal conditions for production of the modified sorbent have been identified and influence of a number of factors upon the 133Ba sorption process in the static conditions have been considered, namely: values of ç, sorbent specific content and the sorbate concentration in the solution, time of contact between the liquid and the solid phases, hydrolytic lignine particle size, solution stirring intensity and alkaline metals salts presence. An outcome curve of the radionuclide sorption in the dynamic conditions has been obtained. It was demonstrated that the hydrolytic lignine was an effective sorbent in respect of radioactive 133Ba and could be used for water bodies protection against radionuclides.
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