Removal of brilliant cresyl blue from aqueous solutions using modified zirconia nanoparticles as an adsorbent under ultrasonic action

Zirconia nanoparticles were modified by sodium dodecyl sulfate (SDS) under ultrasonic action and used as a new adsorbent for the removal of brilliant cresyl blue dye from aqueous solutions. The effect of different parameters such as pH, salt concentration, and amount of adsorbent on the removal procedure was studied and optimum conditions were established. The adsorption data were fitted to Langmuir, Freundlich, and Temkin isotherms and the equilibrium adsorption was best described by the Langmuir isotherm model. The kinetic studies indicated that the experimental data were fitted well by the pseudo-second-order model. The maximum adsorption capacity was found to be 34.4 mg g−1of adsorbent for brilliant cresyl blue. The removal procedure was applied to the removal of brilliant cresyl blue form water samples.