Synthesis of Poly(Ethyl Eugenyl oxyacetate) as Carrier For Separation of Heavy Metal Ions Fe(III), Cr(III), Cu(II), Ni(II), Co(II), and Pb(II) Using Liquid-Liquid Extraction Method

Abstract

Synthesis of poly(ethyl eugenyl oxyacetate), PEEOA, has been conducted. The compound was applied to separate Fe(III), Cr(III), Cu(II), Co(II), and Pb(II) using a liquid-liquid extraction method. The effect of pH, polyeugenyl ethyl oxyacetic ion carrier concentration, extraction time, and metal concentration was optimized to obtain optimum condition. The result showed that the synthesized polyeugenyl ethyl oxyacetic has a yellow color with a melting point 127-1300 °C and yield efficiency of 87%. The formation of polyeugenyl ethyl oxyacetid confirmed with IR spectroscopy and 1H-NMR spectra. The appearance of the absorption band at 1759 cm−1 as stretching vibration of carbonyl (C=O) esther and 1280 and 1373 cm−1 as stretching vibration of carbonyl (C-O-C), chemical shift at 4,74 ppm for proton methylene (CH2-C=0) and chemical shift at 1,27 ppm for proton methyl (O-CH2-CH3). The optimum condition for ion separation has occurred at pH 3-6 for ion Fe(III), pH 5 for ion Cr(III), Ni(II), Co(II), Cu(II), and Pb(II). The carrier volume was optimum at 5 mL (1 × 10−3 M) for Fe (III), 10 mL for Cr(III), Ni(II), and Co(II), and 15 mL for Cu(II), and Pb(II). The optimum extraction time was 2,5 and 20 hours for ion Fe(III) and Cr(III), respectively, and 36 hours for ion Cu(II), Ni(II), Co(II) and Pb(II). The concentration range of metals ion accurately extracted was 0.75 - 5 x 10−4 M for ion Fe(III); 0.75- 2.50 x 10−4 M for Cr(III), Ni(II), and Co(II) and 0.75-1 x 10−4 M for Cu(II) and Pb(II). Compared to other metal ions the respond polyeugenyl oxyacetic acid was best Fe(III) with selectivity order Fe(III) > Cr(III) > Cu(II) > Pb(II) > Ni(II) > Co(II).