Cooperative binding of Cadmium(II) on PVA-Bentonite complex in water

The adsorption of Cd(II) on polyvinyl alcohol-bentonite complex was studied using a simplified model derived from Langmuir-Freundlich model. The bentonite used was obtained from Al-Azraq area in Jordan. The adsorptivity of Cd(II) was not affected by the pH change. No temperature dependence of the adsorption of the heavy metal pollutant onto the PVA/bentonite complex was observed implying that DHads is approximately zero and the adsorption process is entropy driven.

Author(s): Khaleel A. Abu-Sbeiha, Mahmoud Salmana, Idrees Al-Momanib and Bassam El-Eswedc

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