Со(ІІ) AND Ni(II) REMOVAL FROM AQUEOUS SOLUTIONS BY POLYMER AND POLYMER/SILICA ADSORBENTS WITH SULFO AND CARBOXYLIC GROUPS

Authors

  • М.М. Zhyhailo
  • Oksana Demchyna Department of Physico-chemistry of Fossil Fuels L.M. Lytvynenko Institute of Physico-organic Chemistry and Coal Chemistry NAS of Ukraine
  • І.Yu. Yevchuk
  • О.І. Makota

DOI:

https://doi.org/10.17344/acsi.2022.7819

Keywords:

polymer/silica membrane, adsorbent, wastewater treatment

Abstract

Sulfo and carboxylic groups-containing polymer and polymer/silica membranes poly(acrylonitrile-co-2-acrylamido-2-methylpropane-1-sulfonic acid-co-acrylic acid)
[poly(AN-co-AMPS-co-AA)] and poly(AN-co-AMPS-co-AA)/SiO2 were synthesized by UV-initiated polymerization or simultaneous UV-initiated polymerization and sol-gel process in situ and employed as adsorbents for the removal of Co(II) and Ni(II) ions from the aqueous solutions. The adsorption capacity and the effect of pH in the removal process have been studied.
Poly(AN-co-AMPS-co-AA) adsorbent exhibited high efficiency: up to 91,8 % removal of Co(II) and 89,7 % removal of Ni(II). Polymer/silica membranes showed higher removal capacity  as compared to polymer ones. The adsorption kinetics of Co(II) and Ni(II) ions were found to be satisfactorily described by the pseudo-second order reaction equation of the Lagergren kinetic model, which suggests the ion-exchange nature of the process.

Author Biography

Oksana Demchyna, Department of Physico-chemistry of Fossil Fuels L.M. Lytvynenko Institute of Physico-organic Chemistry and Coal Chemistry NAS of Ukraine


Downloads

Published

09.09.2023

Issue

Vol. 70 No. 3 (2023): Acsi

Section

Materials science

License

Copyright (c) 1970 Oksana Demchyna

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Except where otherwise noted, articles in this journal are published under the Creative Commons Attribution 4.0 International License