Magnetic nanocomposite sorbents on the basis of saponite, palygorskite and spondyle clay with 2-10% of Fe3O4 obtained by impregnation method were investigated. Characterization of magnetic nanocomposite sorbents by the method of physical low temperature adsorption-desorption of nitrogen and powder X-ray diffraction is carried out. Magnetic characteristics of magnetic nanocomposites were compared by constructing of magnetization curves. The correlation between the size of crystallites of nanosized magnetic modifier and the magnetic properties of composites found. The magnetic separation process of spent nanocomposites sorbents was investigated in permanent external magnetic field. The effect of magnetizable medium structuring was discovered. The efficiency of magnetic composites application and implementing of magnetic separation in adsorption purification was proven.
Makarchuk O and Dontsova T