Mathematical modeling studies for the adsorptive removal of ciprofloxacin drug from water samples using functionalized silica resin
Abstract
Mathematical modeling studies for the adsorptive removal of ciprofloxacin drug from water samples using functionalized silica resin The current research demonstrates the adsorptive removal of ciprofloxacin antibiotic drug from pharmaceutical wastewater
samples using functionalized silica (FS) resin through batch adsorption experiments. The adsorption experiments were performed
under the optimized parameters such as pH effect, FS-resin amount, ciprofloxacin concentration, equilibrium time
and temperature. Results demonstrate that the maximum adsorption of ciprofloxacin was achieved at pH (6.5), while the
effective resin dose was 20 mg L−
1. The Langmuir and Freundlich models were applied on equilibrium data, and it has been
observed that the adsorption was best fit to the Freundlich model with a good correlation coefficient (R2 = 0.999). Moreover,
the thermodynamic and kinetic parameters show that the adsorption of ciprofloxacin is endothermic and spontaneous in
nature followed by pseudo-second-order kinetic model. To explore the efficiency of resin, the real wastewater samples were
collected and it has been observed that resin has better potential to treat pharmaceutical effluents. Furthermor