Abstract

Buhani, Dian Herasari, Suharso and Suripto Dwi Yuwono

DOI : http://dx.doi.org/10.13005/ojc/330149

In this research, it has been evaluated concentration effect of Cd²⁺ ion used as the Cd²⁺ ionic imprinted on synthesis of the Cd²⁺ ionic imprinted amino-silica hybrid (Cd(II)-IIP) adsorbent to adsorption rate and capacity of the target ion (Cd²⁺) in solution. The results of the ionic imprinting (as active sites of Cd²⁺ ion) obtained were prepared from different concentrations of the Cd²⁺ ion producing the different ionic imprinted cavity fraction. The concentrations of Cd²⁺ ion used as the ionic imprinting were 0.05, 0.10, and 0.15 mol L⁻¹ resulting the ionic imprinted cavity fraction for each 97.89 (Cd(II)-IIPa), 98.49 (Cd(II)-IIPb), and 95.82 % (Cd(II)-IIPc), respectively. From the adsorption data obtained, they show that initial concentration differences of the imprinted Cd²⁺ ion produce different adsorption models of the Cd²⁺ ion. The bigger the Cd²⁺ ionic imprinting fraction, the higher the adsorption rate (k₁) and capacity (q) of Cd²⁺ ion on the adsorbent.

imprinted ionic; adsorption; amino-silica hybrid; adsorption active site.

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