Ion Exchange In Water and Waste Treatment ... - ACS Publications

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HYDROGEN EXCHANGE RESIN FOR STEAM PURITY TESTING R. W. Lane, T. E. Larson, and J. W. Pankey. . , . , , ,

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ELECTRODIALYSIS O F WATER USING A MULTIPLE MEMBRANE CELL A. G. Winger, G. W. Bodamer, R. Kunin, C. J. Prizer, and G. W. , . . . , , , . . . . . , , . , . , , , Harmon.

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CONCENTRATION OF RADIOACTIVE AQUEOUS WASTES W. R. Walters, D. W. Weiser, and L. J. Marek , , , , , ,

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ANION EXCHANGE REMOVAL O F IRON F R O M CHLORIDE SOLUTIONS A. C. Reents and F. H. Kahler . , . . , . , .

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TREATMENT OF CHROMIC ACID WASTES R. F. Ledford and J. C. Hesler. , ,

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PHENOL SORPTION ON ION EXCHANGE RESINS R. E. Anderson and R. D. Hansen , . , , . . . , ,

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MONOBED OPERATION W I T H A PROBLEM WATER R. V. Skold and J. F. Wilkes. . . , . . . , . .

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CAPACITY AND LEAKAGE O F ION EXCHANGE COLUMNS . , . . . , . . , , . . Morris Mindick

Interest in ion exchange has grown significantly in the last ten years. In 1943 there wereonly four papers published in Industrial and Engineering C h e m i s t r y on ion exchange-all devoted to its use in water treatment. There were only about fifteen papers on ion exchange in the whole chemical literature in 1943 compared to 550 in 1953. Of the 550 almost half dealt with the topics discussed in this symposium-water and waste treatment and ion exchange membranes. During these ten years the use of ion exchange resins has grown from their use for the removal of calcium and magnesium to soften household water to the complete demineralization of water for laboratory and industrial use. For example, Kansas City has the first brewery that uses ion exchange to completely demineralize its water [Chern.Eng. News, 32, 635 (Feb. 15, 1954)]. Complete demineralization of water allows industries 46

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TREATMENT O F SPENT SULFURIC ACID PICKLING LIQUORS A. M. Fradkin and E. B. Tooper , , , , , , .

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ELECTROLYTIC REGENERATION OF SPENT PICKLING SOLUTIONS Henry C. Bramer and James Coull , , . . , , , ,

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CATION EXCHANGE REMOVAL OF RADIOACTIVITY FROM WASTES H. Gladys Swope and Elaine Anderson , . , . , , ,

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to add the specific amount and kind of salt for make-up water that best fills their needs. Ion exchange is becoming more and more important in the treatment of industrial wastes. Its first use was in the treatment and recovery of metals from plating baths. It has also been used in the separation and recovery of radioactive isotopes. In fact, its uses seem to be legion. Two recent developments are the separation of organic from inorganic constituents (the so-called ion exclusion technique), and the preparation and use of ion exchange membranes. Three papers in this symposium deal with this latter subject. The other papers in the symposium report on steam purity testing, treatment of steel mill waste pickling liquors, removal of metals, adsorption of phenols, removal of radioactivity, and a method for evaluating the capacity of ion exchange resins. M. GLADYS SWOPE

INDUSTRIAL A N D ENGINEERING CHEMISTRY

Vol. 47, No. 1