A kinetic study on cadmium adsorption from aqueous solutions by pre-conditioned phosphogypsum

Balkaya N., CESUR H.

DESALINATION AND WATER TREATMENT, cilt.57, sa.6, ss.2515-2521, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 57 Sayı: 6
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1080/19443994.2015.1038854
  • Dergi Adı: DESALINATION AND WATER TREATMENT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2515-2521
  • İstanbul Üniversitesi Adresli: Evet

Özet

In the present study, the effect of contact time, adsorbent dosage, and initial cadmium concentration on the adsorption of Cd(II) ions from aqueous solutions by pre-conditioned phosphogypsum was investigated. The kinetics of adsorption was studied and, pseudo-first-order, pseudo-second-order, and Elovich models were used to fit the experimental data, which was obtained from batch experiments. The kinetic adsorption data fitted well into the second-order kinetic model. Adsorption mechanism was explained with the intraparticle diffusion and Boyd kinetic models.