Download Ion Exchange and Solvent Extraction: A Series of Advances, by Jacob A. Marinsky, Yitzhak Marcus PDF

By Jacob A. Marinsky, Yitzhak Marcus

The Ion trade and Solvent Extraction sequence treats ion alternate and solvent extraction either as discrete issues and as a unified, multidisciplinary learn - providing new insights for researchers in lots of chemical and comparable fields.;Volume 12 includes insurance of: the character of metal-ion interplay with oppositely charged websites of ion exchangers; high-pressure ion alternate separation of infrequent earth components; the economic restoration of necessary minerals from seawater and brines through ion alternate and sorption; the kinetics of ion trade in heterogenous structures; the ion-exchange equilibria of amino acids; and more.;The paintings is meant for analytical, co-ordination, strategy, separation, floor, natural, inorganic, actual and environmental chemists, geochemists, electrochemists, radiochemists, biochemists, biophysicists, hydrometallurgists, membrane researchers and chemical engineers.

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Additional resources for Ion Exchange and Solvent Extraction: A Series of Advances, Volume 12

Example text

In analyzing schemes for separation processes the separation of component mixtures or the purification of components with sorbability extremes (lowestor highest) from multicomponent systems willbe considered. When separating multicomponent mixtures the problem of providing flow circulation is solved in the same way as in separating twocomponent mixtures. 11. SEPARATIONPROCESSES WITH FLOW REVERSAL A general scheme for the countercurrention-exchange separation process with flow reversal is analogous to the schemes for such two-phase separation processes as rectification, ,chemical exchange, etc.

Purification from Impurities Sorbed More Strongly than the Substance to Be Purified The product BX, with decreased content of impurities, is obtained in column I. Carried out in columnI1 is the combined processof separation and recovery of the AX and BX mixture fromthe ion exchangerand resin regeneration. The process scheme is shownin Fig. 3. For complete displacement of the ions separated by the auxiliary C ions in columnI1 it is necessary [7] that the ratio of solution and ion exchanger flow inputs should satisfy the condition where = y(1- x)/(l - y)x, and y and xare equivalent fractionsof A in the ion exchanger and solution, respectively,at equilibrium.

3171, or for the puritication of nickel from calciumon cation exchanger [M]. Similarly the process may also be performed when the purpose is to obtain A as AX. The recovery of Rb+ from its mixture withK+, using NH: as an auxiliary ion, canbe used as an example [l91 of this. In the scheme in question the processes of recovery of a given component from ion exchanger and resin regeneration are combined. However, some difficulties may arise when removing CX from the solution leaving column11. With ion exchangerhaving a high affinityfor the ions GORSHKOV L A scheme for purification of product more strongly sorbed im- purities.

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