Sorption purification of aqueous solutions to remove TBP using Stirosorb sorbent

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Abstract

The sorption purification of aqueous solutions to remove TBP on the Stirosorb polymer sorbent in batch and column modes was studied. Sitorsorb polymer sorbent allows purification of aqueous media to remove TBP at a solution temperature not exceeding 70°C to an organic matter content of no more than 10–11 mg/dm3 at a load of ~0.9 g TBP/g sorbent. A solution containing U(VI) and Pu(IV) is purified to remove phosphorus-containing compounds on Stirosorb sorbent without solution depletion of U(VI) and Pu(IV).

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About the authors

V. V. Kulemin

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

Author for correspondence.
Email: kulem-ipc@yandex.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071

S. A. Kulyukhin

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

Email: kulem-ipc@yandex.ru
Russian Federation, Leninskii pr. 31, korp. 4, Moscow, 119071

References

  1. Kulemin V.V., Kostikova G.V., Kulyukhin S.A. // Radiochemistry. 2024. Vol. 66. N 1. P. 50–57.
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  3. Паренаго О.О., Костенко М.О, Устинович К.Б., Хесина З.Б., Буряк А.К. // Сорбционные и хроматографические процессы. 2020. Т. 20. N 6. С. 658–673.
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  5. Попов А.Ю., Блинникова З.К., Цюрупа М.П., Даванков В.А. // Сорбционные и хроматографические процессы. 2017. Т. 17. № 2. С. 183–190.
  6. Попов А.Ю. Дис. …к.х.н. М.: Ин-т элементоорганических соединений им. А.Н. Несмеянова РАН, 2021.

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2. Fig. 1. Kinetic dependences F = f(of TBP adsorption from an aqueous solution on the Styrosorb sorbent. [HNO3] = [U(VI)] = 0. Temperature t = 20°C. Initial concentration of TBP (C0), mg/dm3: 1 – 365, 2 – 170, 3 – 70. F = a/ap, where a is the specific adsorption at a certain point in time, ap is the equilibrium specific adsorption.

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3. Fig. 2. Kinetic dependences –lg(1 – F) = f( of TBP adsorption from an aqueous solution on the Styrosorb sorbent. [HNO3] = [U(VI)] = 0. Temperature t = 20°C. Initial concentration of TBP (C0), mg/dm3: 1 – 365, 2 – 170, 3 – 70

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