THE STUDY OF THE SORPTION PROPERTIES OF FILTERING MATERIALS BASED ON TITANIUM PHOSPHATE - POROUS TITANIUM COMPOSITION

Authors

  • Vladimir Shablovski Laboratory of inorganic sorbents and anticorrosive coatings Research Institute for Physical Chemical Problems of the Belarusian State University, Belarus
  • Alla Tuchkoskaya Laboratory of inorganic sorbents and anticorrosive coatings Research Institute for Physical Chemical Problems of the Belarusian State University, Belarus
  • Vladimir Rukhlya Laboratory of inorganic sorbents and anticorrosive coatings Research Institute for Physical Chemical Problems of the Belarusian State University, Belarus
  • Olga Pap Laboratory of inorganic sorbents and anticorrosive coatings Research Institute for Physical Chemical Problems of the Belarusian State University, Belarus
  • Kateryna Kudelko V. I. Vernadskyy Institute of general and inorganic chemistry NAS of Ukraine, Ukraine https://orcid.org/0000-0002-7319-8797

DOI:

https://doi.org/10.20535/2218-930032021244507

Keywords:

adsorption, inorganic sorbent, titanium phosphate, ion-exchange, microfilter, porous titanium

Abstract

Inorganic sorbents are more selective in comparison with commercial ion exchange resins towards of metal ions. However, inorganic sorbents characterized not high kinetic properties. One of the way to increase the kinetic rate of inorganic sorbents is to reduce the particle size of these materials, other way is synthesizing inorganic sorbents as porous products from powder materials. A sample of such inorganic sorbents is titanium phosphate of various compositions.

Studying the properties of microfilters based on composition titanium phosphate - porous titanium has been developed. The sorbents based on acidic titanium phosphate Ti(HPO4)2H2O were used for filtering solution with Fe(II) content. It is found that the number of impregnations with inorganic sorbent modificator is important and influence filtration process. The obtained results demonstrated that after the first impregnation of porous material with a smaller pore size, it is possible to obtain such sorbent as a mass content of powder material. By varying the ionic form of titanium phosphate, the porosity of titanium, the amount of impregnation, it could be possible effect on the sorption Fe(II). The sorption properties of titanium-titanium phosphate microfilters were studied by potentiometric titration in the NaCl-NaOH system, as well as the sorption of Fe2+ ions. The degree of purification for Fe(II) from solution with a concentration of 10 mg/l is 64 %. Application an electric potential to the microfilter of porous titanium - phosphate titanium increases the degree of purification of Fe(II) to 88 %.

References

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Published

2021-12-22

Issue

Section

MATERIALS AND EQUIPMENT FOR WATER TREATMENT