A kinetic study on cadmium adsorption from aqueous solutions by pre-conditioned phosphogypsum
DESALINATION AND WATER TREATMENT, vol.57, no.6, pp.2515-2521, 2016 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 57 Issue: 6
- Publication Date: 2016
- Doi Number: 10.1080/19443994.2015.1038854
- Journal Name: DESALINATION AND WATER TREATMENT
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.2515-2521
- Keywords: Adsorption, Cadmium, Kinetics, Phosphogypsum, Reuse, CEIBA-PENTANDRA HULLS, ACTIVATED CARBON, METHYLENE-BLUE, LEAD REMOVAL, FLY-ASH, EQUILIBRIUM, IONS, ZINC, PARAMETERS, MECHANISM
- Ondokuz Mayıs University Affiliated: Yes
Abstract
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.