Abstract
Synthetic inorganic ion exchangers have special uses and can be valuable in some trace separations. Zeolite NaA is used in an ion exchange study with Sr 2+ , Ca 2+ , and Mg 2+ in aqueous Nacl media of ionic strengths, 1, 2, 3, 4, and 5, and in the oversaturated range of 7 and 10 m . A mixed aqueous methanol, ethanol, n-propyl alcohol, and n-butyl alcohol, 1 m NaCl medium has been investigated with the aim of studying the effect of changing the dielectric constant of the medium on the uptake of the studied cations, which are present in trace concentrations in caustic soda manufactured by the selective membrane technique. The temperature effect on uptake shows an endothermic character for the exchange reactions under investigation.
Published Version
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