Poly(Furfural-Acetone) as New Adsorbent for Removal of Cu(II) from Aqueous Solution: Thermodynamic and Kinetic Studies

Tariq S. Najim, Suhad A. Yassin, Ali J. Majli


Poly(furfural-acetone) was prepared and used for the removal of Cu(II) from aqueous solution. The optimum pH
for the removal was found to be 6. The adsorption kinetic of Cu(II) was studied, and the rates of sorption were
found to conform to Pseudo–Second-order kinetic with a correlation coefficient (R2=1), results indicate that the
pH 6 of the system supported the adsorption of Cu(II) on PFA, which involve higher negative value of ?Go. On
the other hand, the degree of spontaneity of the reaction increases with increasing temperature for all
concentrations of Cu(??). The positive values of ?H° reveals, the endothermic nature of the process and its value
lie in the range of physisorption. It was also observed that the randomness increases at the solid-solution
interface from the positive values of ?S°. Estimation of sticking probability S* values reveal that the process is
favorable due to low value of S*(S*<1). Activation energy Ea values were consistent with values of ?H° both
are positive and their values lie in the range of physisorption.

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DOI: https://doi.org/10.5539/ijc.v2n2p44


International Journal of Chemistry   ISSN 1916-9698 (Print)   ISSN 1916-9701 (Online)

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