• Liliya A. Frolova Ukrainian State University of Chemical Technology, Ukraine
  • Oleksandr O. Pasenko Ukrainian State University of Chemical Technology, Ukraine
  • Konstantin M. Sukhyy Ukrainian State University of Chemical Technology, Ukraine



diatomite; magnetite; magnetic nanoparticle, adsorption;


The use of composite polymeric adsorbents containing components of natural origin, environmentally friendly and cheap, is one of the promising technological solutions. The article compares the characteristics of diatomite, diatomite-alginate granules and diatomite-alginate-Fe3O4 granules. Diatomite-alginate-Fe3O4 composites were synthesized by depositing magnetic iron oxide on alginate-diatomite granules. The process of synthesis and granulation of the composite adsorbent alginate-diatomite-magnetite was studied in this work. The process of applying the active magnetic phase of the adsorbent has been studied. All obtained samples were examined using electron microscopy, IR spectroscopy, X-ray phase analysis and derivatography. The dependence of the static strength of granules on the content of the solid phase (17–25 kPa) has been established. The thermal stability of the samples was studied. The adsorption of methylene blue anions from aqueous solutions has been studied. For the adsorbent alginate-diatomite and alginate-diatomite - Fe3O4, the degree of purification was 9599 %.


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