Abstract
A composite ion exchange material, polyaniline stannic silicate was prepared under different experimental conditions. Ion exchange material synthesized at pH 1.0 shows an ion exchange capacity 1.6 meq/g for Na+ ions. The exchanger has been characterized on the basis of X-ray and TGA. Ion exchange capacity, pH titration, elution and distribution studies were also carried out to determine the preliminary ion exchange properties of the material. The effect of temperature on the ion exchange capacity of the material at different temperatures has been studied. The sorption behavior of metal ions was also explored in different surfactant mediums. The practical utility of the material was explored by achieving quantitative separation of toxic metal ions in synthetic mixtures.
Highlights
Ion exchange materials have been proved very suitable tool to various environmental problems [1,2,3]
Quantitative binary separations of some metal ions of analytical interest were achieved on polyaniline stannic silicate. 2.0 g of exchanger in H+ form was packed in a glass column (i.d = 0.5 cm) with a glass wool support at the end
In this study of the preparation and characterization of organic-inorganic composite cation exchange material, a number of samples of organic-inorganic electrically conducting composite polyaniline stannic silicate providing a new class of hybrid ion exchangers were prepared by the sol-gel mixing of organic conducting polymer polyaniline with the inorganic precipitate of stannic silicate (Table 1)
Summary
Ion exchange materials have been proved very suitable tool to various environmental problems [1,2,3]. The inorganic ion exchangers have their own limitations e.g. non-suitable for column operation because of non-granulometric nature. In order to overcome the above limitations of organic resins and inorganic ion exchangers, many investigators have introduced organic-inorganic composite ion exchangers consisting properties of both the constituents and enhanced utility of inorganic materials and organic binding matrices [4]. Composite materials formed by developing organic polymers and inorganic particles are very important for the environmental point of view. Various methods have been developed for the removal of toxic metals from aqueous systems such as adsorption, reverse osmosis, ion exchange. An attempt has been made for the synthesis, characterization, ion exchange behavior and analytical applications of composite cation exchanger, polyanailine stannic silicate
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