Journal
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
Volume 93, Issue 7, Pages 1245-1251Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036024419060219
Keywords
sorbents; titanium phosphate; strontium; sorption kinetics
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Funding
- Russian Science Foundation [17-19-01552]
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Kinetics of the sorption of strontium ions from model solutions on an inorganic sorbent based on titanium phosphate is studied. Experimental dependences describing the ion exchange kinetics are obtained that represent three exchange mechanisms: exchange on surfaces, ion diffusion into the bulk of the sorbent, and a heterogeneous ion exchange reaction to form a new phase. The internal diffusion coefficients, ion exchange rate constants, and apparent activation energies for internal and external diffusion are determined.
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