Havy Metal Cations Adsorption by Cinnamoyl C-methylcalix [4] Resorcinarene

Abstract

Adsorption has been extensively studied as a costeffectivemethod for removing a wide variety of hazardous materials, such as dyes and heavy metals, from aqueous solutions. The aim of this research is to synthesized and applicated of CinnamoylC-methylcalix[4]resorcinarene (CCMCR) as the Cr(III) and Cd(II) adsorbent. The cinnamoyl C-metylcalix[4]resorcinarene was synthesized in 4 steps. They were synthesis of C-methylcalix[4]resorcinarene via acid-catalyzed condensation of resorcinol and acetaldehyde, followed by O-acetylation, Friedel-Craft cinnamoylation and hydrolysis. The characterization of the target compound was performed by IR and 1H-NMR. The adsorption of Cr(III) and Cd(II) was carried out in batch system. The effect of operating parameter conditions on capacity adsorption were investigated including acidity, interaction time, and the metal ion concentration. Most parameters in batch system confirm that CCMCR is a good adsorbent for Cr(III) but not good enough for Cd(II). The Cr(III) uptake was bigger than that of Cd(II), and also Cr(III) adsorption rate was faster than Cd(II). The adsorption kinetic both of Cr(III) and Cd(II) adsorptions in batch followed pseudo 2nd order kinetics model. It is mean that the adsorption process depend on concentration and the quantity of active site. The results of adsorption equilibirium study showed that in adsorption Cr(III) and Cd(II) onto CCMCR, Langmuir isoterm model was more applicable than Freundlich model.