birlik özkütük, ebru eskişehir osmangazi üniversitesi - fen-edebiyat fakültesi - kimya bölümü, turkey

SELECTIVE REMOVAL OF Cd(II) USING DOUBLE IMPRINTED POLYMER FROM SYNTHETIC WATER

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The aim of this study is to prepare ion-imprinted polymers which can be used for the selective removal of Cd(II) from synthetic water. Ion-imprinted polymer particles have been prepared by molecular imprinting technique using 3-mercaptopropyl-trimethoxysilane as monomer, tetraethoxysilane as crosslinking agent in the presence of Cd(II) and dodecylamine. After that, the template ions have been removed using 0.1 M HNO3/ethanol. A batch procedure has been used for the determination of the characteristics of the Cd(II) solid phase. The obtained results have shown that IIP has a large adsorption capacity (98.2 mgg^-1). Optimum pH and adsorption time have found to be 5.0 and 2 h, respectively. In selectivity study, it has found that imprinting have been increased affinity of the material toward Cd(II) ion over other competitor metal ions with the same charge. The selectivity of Cd(II)/Zn(II), Cd(II)/Cu(II) and Cd(II)/Hg(II) have found to be 2.73, 8.83 and 112 respectively.

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Ion , imprinted , Cadmium Separation , Preconcentration , Sol , gel

Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering

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