Open AccessStudy of the sorption properties of titanium phosphatestowards the metal ions.
Author(s) -
P. E. Evstropova,
М. В. Маслова
Publication year - 2020
Publication title -
trudy kolʹskogo naučnogo centra ran
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2020.3.4.012
Subject(s) - sorption , sorbent , titanium , aqueous solution , zinc , phosphate , cobalt , kinetics , metal ions in aqueous solution , cadmium , diffusion , chemistry , metal , inorganic chemistry , chemical engineering , materials science , nuclear chemistry , adsorption , organic chemistry , thermodynamics , physics , quantum mechanics , engineering
The process of sorption of lead, zinc, cadmium and cobalt ions from aqueous solutions on titanium-containing sorbents of various compositions is studied. Morris —Weber and Boyd diffusion models, Lagergren pseudo-first ordermodels, and Ho and Mackay pseudo-second order models were used to simulate sorption kinetics. It was shown that the speed of the sorption process is influenced by both the composition of the sorbent and the interaction in the sorbent —sorbate system. Thehigh chemical affinity of the studied cations to phosphate groups determines the prospects of using titanium phosphate for the concentration of heavy metals and their subsequent immobilization in phosphate matrices.