Specific ion exchange resins

Removal of ultraviolet absorbing organics by passage through a specific ion exchange resin such as Amberlite XAD-2. 

Metal specific ion-exchange resins bearing hydroxyoxime groups have been prepared [10] from substituted phenylacrylates (Fig. 6). 

Bibler, J. P., Wallace, R. M., and Bray, L. A. Testing a New Cesium-Specific Ion Exchange Resin for Decontamination of Alkaline High-Activity Waste, Report WSRC-RP-89, Westinghouse Savannah River Co., Aiken, SC, 1989. 

Figure 2.2 An example of a specific ion exchange resin and its relation to an analytical...

These chelating resins have found most of their use in metal ion recovery processes in the chemical and waste recovery industries. They may find use in fermentation applications where the cultured organism requires the use of metal ion cofactors. Specific ion exchange resins have also been used in laboratory applications that may find eventual use in biotechnology product recovery applications. 

The effect of additives. Here the aim was to attempt to trap out any reactive boron species that may have been causing the product instability. The addition of various aldehydes, or dienes, boron specific ion exchange resins or other boron trapping agents just before work-up had no effect on the product stability. 

Recent laboratory studies and field operations have demonstrated the excellent performance of a macroreticular boron-specific ion-exchange resin, Amberlite XE-243, for deborat-ing several process streams, sea water, and irrigation water. One large plant is now operating successfully on sea water. Further studies on this product are currently in progress in several areas throughout the world. 

One way of bypassing calculation of Ea/b to estimate the selectivity of a specific ion-exchange resin for various ions is to measure the distribution coefficient ZJy for individual ions, including radionuclides. (The mass distribution coefficient T)m is also used for this purpose.) The volumetric distribution coefficient is the ratio of... 

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