KINETICS OF ADSORPTION OF COPPER (II) IONS ON THERMALLY OXIDIZED SAPROPEL
The adsorption of copper (II) ions from model solutions under static conditions on thermally oxidized sapropel at temperatures from 300°C to 900°C. It is established that the optimal temperature of thermal oxidation of sapropel for the adsorption of copper (II) ions is 600°C. Kinetic models of the first and second orders were used to describe the adsorption kinetics. The processing of kinetic dependences allows us to conclude that the parameters of the adsorption of copper (II) ions on thermally oxidized sapropel satisfy the pseudo-second-order kinetics model. The calculated value of the activation energy from the kinetics of adsorption of copper (II) ions on thermally oxidized sapropel suggests the possibility of chemical interaction of copper (II) ions with the functional groups of the sorbent.