Ion-exchange zirconium sorption by functionalized carbon nanofibers

• Published in: Inorganic materials Vol. 48; no. 2; pp. 128 - 131
• Main Authors: Van Nguyen, Huu, Luu, Son Tung, Rakov, E. G.
• Format: Journal Article
• Language: English
• Published: Moscow Nauka/Interperiodica 01-02-2012
• Subjects: Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Inorganic Chemistry; Materials Science; Ceramic Matrix Composite; Sorption Capacity; Equilibrium Sorption Capacity; Sorption Capacity Increase; Zirconyl Chloride
• ISSN: 0020-1685; 1608-3172
• DOI: 10.1134/S0020168512010074

We have studied chemical equilibrium between functionalized carbon nanofibers and an aqueous ZrOCl
2
or ZrOSO
4
solution and evaluated the sorption capacity of the nanofibers as a function of Zr concentration, solid: liquid (S: L) ratio, solution pH, and the degree of nanofiber functionalization. The results demonstrate that the equilibration time at S: L = 1: 10 and 1: 2 is 10 and 30 min, respectively, and that the sorption capacity increases with increasing solution pH or Zr concentration and with decreasing S: L ratio and exceeds 2.0 mg ZrO
2
/mg of the sorbent under certain conditions. A saturated sorbent after drying can be used to fabricate nanofiber-ZrO
2
composites.