Co-purification of water from aluminum and fluorine by the membrane from wood

Authors

  • T. Yu. Dulneva Institute of colloid chemistry and water chemistry AV Dumansky National Academy of Sciences of Ukraine , Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України
  • L. A. Deremeshko Institute of colloid chemistry and water chemistry AV Dumansky National Academy of Sciences of Ukraine , Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України
  • D. D. Kucheruk Institute of colloid chemistry and water chemistry AV Dumansky National Academy of Sciences of Ukraine , Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України
  • V. V. Goncharuk Institute of colloid chemistry and water chemistry AV Dumansky National Academy of Sciences of Ukraine , Інститут колоїдної хімії та хімії води ім. А.В. Думанського НАН України

DOI:

https://doi.org/10.31548/bio2018.03.013

Abstract

The high efficiency of the process of water purification from Al(III) hydroxy compounds with adsorbed F−ions by a microfiltration tubular wood membrane is shown. The main regularities of this process are investigated and its technological parameters are determined.

It is established that such a high efficiency is due to the combined action of the adsorption of F−by hydroxo-compounds Al(III) and their subsequent delay by the wood membrane. At the same time, an additional selective barrier was formed on the surface of the wood membrane in the form of a self-forming dynamic membrane of Al(III) hydroxo compounds with adsorbed F− ions, which increased the efficiency of the process of water purification from them.

It is proposed to use such a membrane for joint water purification from aluminum and fluorine to the MPC of Al3+  and F− ions in water at initial concentrations of F− up to 10.0 mg/dm3 and Al3+ to 30.0 mg/dm3, pH 6.5 to 7,2, an operating pressure of 1.0 MPa and a permeate recovery rate of up to 70 %.

Keywords: wood membrane, microfiltration, F− ions, Al(III) hydroxo compounds, dynamic membrane

References

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Published

2018-08-14

Issue

Vol. 10 No. 3-4 (2018)

Section

Chemistry

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