Removal of Cu(II) and Cr(VI) ions from aqueous solution using chelating fiber packed column: Equilibrium and kinetic studies
- Removal of Cu(II) and Cr(VI) ions from aqueous solution using chelating fiber packed column: Equilibrium and kinetic studies
- 고영건; 전용진; 김충현; 최웅수
- Chelating fiber; Heavy metal ions; Adsorption; Amine groups; Crystal growth of metal ions
- Issue Date
- Journal of hazardous materials
- VOL 194, 92-99
- Herein, we demonstrate the adsorption process system with the diethylenetriamne coupled polyacrylonitrile
fiber for the removal of Cu(II) and Cr(VI) ions in the aqueous solution. The synthesized chelating
fiber showed a high adsorption capacity of 11.4 mequiv/g. Interestingly, the crystal growth of copper
ions on the chelating fiber was observed during the adsorption process. The chelating fiber packed column
showed the high performance of the removal of Cu(II) in the aqueous solution due to the distinct
characteristic of the crystal growth of metal ions on the chelating fiber. After Cu(II) adsorption on the
chelating fiber, the color of the fiber changed to light blue from yellow. The isotherm parameter n of
1.991 was obtained with Freundlich isotherm model for the adsorption equilibrium study which indicates
that Cu(II) adsorption on the chelating fiber is very favorable due to n > 1. The pseudo-first-order
and pseudo-second-order model equations were used for the kinetic study.
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