Decontamination of copper(II) from aqueous solutions using synthesized polyaniline/montmorillonite composite

The adsorptive removal of copper(II) ions from aqueous solutions were studied using the prepared polyaniline/montmorillonite composite adsorbent. The controlling parameters as: pH, adsorbent dose, ion concentration and temperature were studied. The removal of Cu(II) reached its maximum value at pH 5.5 and the equilibrium adsorption capacity was found to be 99.61 mg g-1 on the composite adsorbent. The experimental adsorption results were found to follow Langmuir adsorption isotherm model with maximum adsorption capacity of 100.01 mg g-1. The kinetic studies showed good fit of the experimental results with pseudo-second-order kinetic model, indicating the participation chemisorptions.

Automated summary

The adsorptive removal of copper(II) ions from aqueous solutions was investigated using a polyaniline/montmorillonite composite adsorbent. The study examined the controlling parameters of pH, adsorbent dose, ion concentration, and temperature. The results showed that the optimal pH for copper(II) removal was 5.5, and the equilibrium adsorption capacity of the composite adsorbent was 99.61 mg g-1. The experimental data followed the Langmuir adsorption isotherm model, with a maximum adsorption capacity of 100.01 mg g-1. Kinetic studies indicated that the experimental results fit well with a pseudo-second-order kinetic model, suggesting chemisorption involvement.