PREPARATION OF ANION-EXCHANGE CELLULOSE FOR THE REMOVAL OF CHROMATE
Makaleler > Tam Makale · 2019
Yazarlar: Özgür ARAR
Journal of the Chilean Chemical Society, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2019, cilt 64, ss 4471-4474
DOI: 10.4067/s0717-97072019000204471
Özet
The quaternary ammonium group containing cellulose was prepared by the one-pot method and applied for the removal of chromate (CrO 4 2-) ions from aqueous solution.The prepared sorbent was characterized by using elemental analyzer and Fourier transform infrared (FTIR) spectroscopy.Its ion exchange behavior toward CrO 4 2-ions was investigated as a function of sorbent dose and initial solution pH.The kinetic and sorption equilibrium experiments were also carried out in a batch system.Equilibrium data were best fitted with the Langmuir model and the maximum ion exchange capacity of the sorbent was found as 3.8 mg of CrO 4 2-/g sorbent.Moreover, the removal of CrO 4 2-is achieved within 5 minutes.Furthermore, the calculated thermodynamic parameters disclosed that the ion exchange reaction is feasible, spontaneous and exothermic.In addition, the CrO 4 2-ions can be desorbed from the sorbent by 1.0 M HCl solution with 95% regeneration efficiency.