Exchange behaviour of tin, antimony and uranium in aqueous/nonaqueous media on the cation-exchanger zirconium phosphate

Marei, S. A.; Aly, H. F.; Zakareia, N.

doi:10.1007/bf00431607

Cited by 6 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Extensive laboratory experiments have been conducted on the uptake of U from aqueous solutions by crystalline and amorphous Zr-(oxyhydr)oxides and Zr-phosphates (e.g., Amphlett, 1964;Gal and Ruvarac, 1964;Horwitz, 1966;Vesely et al, 1968;Ruvarac and Vesely, 1970;Marei et al, 1972;Aly et al, 1975;Pakholkov and Zelenin, 1988;Song et al, 1995;Plotnikov and Bannykh, 1997;Drot et al, 1999;Zhuravlev et al, 2002;Lomenech et al, 2003;Misaelides et al, 2006;Um et al, 2007;Finck et al, 2008). Early studies focused on the use of these materials as industrial ion exchangers, while more recent ones were designed to test their applicability to the remediation or prevention of U contamination in soils and natural waters.…”

Section: Zr-rich Materialsmentioning

confidence: 99%

Newly recognized hosts for uranium in the Hanford Site vadose zone

Stubbs

Veblen

Elbert

et al. 2009

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

Uranium contaminated sediments from the U.S. Department of Energy's Hanford Site have been investigated using electron microscopy. Six classes of solid hosts for uranium were identified. Preliminary sediment characterization was carried out using optical petrography, and electron microprobe analysis (EMPA) was used to locate materials that host uranium. All of the hosts are fine-grained and intergrown with other materials at spatial scales smaller than the analytical volume of the electron microprobe. A focused ion beam (FIB) was used to prepare electron-transparent specimens of each host for the transmission electron microscope (TEM). The hosts were identified as: (1) metatorbernite [Cu(UO 2 ) 2 (PO 4 ) 2 Á8H 2 O]; (2) coatings on sediment clasts comprised mainly of phyllosilicates; (3) an amorphous zirconium (oxyhydr)oxide found in clast coatings; (4) amorphous and poorly crystalline materials that line voids within basalt lithic fragments; (5) amorphous palagonite surrounding fragments of basaltic glass; and (6) Fe-and Mn-oxides. These findings demonstrate the effectiveness of combining EMPA, FIB, and TEM to identify solid-phase contaminant hosts. Furthermore, they highlight the complexity of U geochemistry in the Hanford vadose zone, and illustrate the importance of microscopic transport in controlling the fate of contaminant metals in the environment.

show abstract

Section: Zr-rich Materialsmentioning

confidence: 99%

Newly recognized hosts for uranium in the Hanford Site vadose zone

Stubbs

Veblen

Elbert

et al. 2009

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

show abstract

“…Table I. Inorganic Ion Exchangers Titanium phosphate (112,529) phosphate silicate (377) arsenate (426,433) antimonate (433) vanadate (428) molybdate (433) tungstate (220,431,433) selenite (418,433) Zirconium oxide (189,448) phosphate (12,13,16,83,84,337,447,453,529) phosphate silicate (28,370) phosphomolybdate (541) molybdate ( 82) arsenate (458) Cerium (IV) polyphosphate (7, Tin (II) ferrocyanide (430,432) Tin (IV) oxide (49,438) phosphate (114, 423) arsenate (114,219,427) antimonate (420) molybdate (425) selenite (422) ferrocyanide (173) Tantalum phosphate (386) antimonate (421) Miscellaneous Ammonium phosphomolybdate (64,164,203) Antimony pentoxide…”

Section: New Exchangersmentioning

confidence: 99%

Ion exchange

Walton¹

1974

Anal. Chem.

View full text Add to dashboard Cite

Harold F. Walton joined the staff of the University of Colorado in 1947. His research interests in ion exchange date from 1938 when he went to work for the Permutit Co. as a research chemist; from there he went to Northwestern University in 1940. He obtained the BA and DPhil degrees at Oxford University. He Is the author of three textbooks on inorganic and analytical chemistry and coauthor with William Rieman III of "Ion Exchange in Analytical Chemistry" published in 1970. He has contributed chapters on the physical and analytical chemistry of ion exchange to several cooperative works. In 1961 he was chairman of the Gordon Research Conference on Ion Exchange. Dr. Walton spent the 1966-67 academic year and half of 1970 as a Fulbright visiting professor at the University of Trujillo, Peru. He Is a member of the Advisory Board of Analytical Chemistry.has chapters on ion exchange in nonaqueous and mixed solvents by Marcus, on ligand-exchange chromatography by Walton, and on liquid ion exchange technology by Kunin; Volume 5 has accounts of inorganic ion exchangers by Clearfield, Nancollas, and Blessing; of ion exchange in elemental analysis by Strelow; and on pellicular ion exchange resins by Horvath. A good short account of ion exchange in analytical chemistry is that by Inczedy in the Chemical Rubber Publishing Company's review series (A6). The International Union of Pure and Applied Chemistry has published the report of a committee on ion-exchange nomenclature, consisting of O. Samuelson, E. Bayer, and F. G. Helfferich (A7).In the Russian language, two books on ion exchange have appeared (A9, A 28). Both books were reviewed in the Russian Journal of Analytical Chemistry (Zh. Anal. Khim.). Another significant Russian book is that edited by Sladkov (A 29), which has a chapter by Davankov, Rogozhin, and Semechkin on ligand-exchange chromatography and another by Rogozhin, Davankov, and Peslayakas on the chromatographic separation of optical isomers. Reviews on chelating ion exchangers (A 23) and complex-ion formation in exchange resins (A27) have also appeared. A paper by Gurvich (288) describes the use of organic complexing agents incorporated into absorbants like charcoal.A German review (A20) is aptly titled "Ion Exchangers -Active Polymers." Recent progress in ion-exchange chromatography is reviewed in Japanese (A 14). An English-language book reflecting the author's own research and interest is that by Muzzarelli (A22).The latest volume of "Chromatographic Reviews," now published as an integral part of the Journal of Chromatography, includes two chapters on a very timely topic, the

show abstract

“…Thus, KAKIHANA and KOJIMA [6] showed that in solutions of more than 30 mole % of ethanol, the selectivity coefficient of K + exchange on amorphous ZrP is, contrary to the aqueous medium, higher than that of Cs + exchange. Besides, some studies [7,8] have been done on the sorption of some elements on amorphous ZrP from mixed solvents with the main aim of obtaining better separation conditions. Ion exchange on crystalline ZrP is usually thermodynamically irreversible whereby hysteresis phenomena are often observed [2, 9 -14], and since it was intended to carry out a study, including the thermodynamic aspect of the behaviour of ZrP in mixed solvents, amorphous ZrP was chosen for the study.…”

Section: Introductionmentioning

confidence: 99%

Ion Exchange Properties of Amorphous Zirconium Phosphate in Mixed Solvents

Misak

Mikhail

1982

Radiochimica Acta

View full text Add to dashboard Cite

Tracer equilibria measurements for sorption on zirconium phosphate (ZrP) of Na + in up to 90 % methanol and acetone and of Cs + in up to 90% methanol and 60% isopropanol and acetone have shown that in all these solutions, ion exchange is the main sorption mechanism. With the exception of the Na + capacity in 90% methanol, the Na + -and Cs + -capacities of ZrP, are higher in solutions containing up to 90% methanol, 60% isopropanol and 60% acetone than in water, which is probably due to the higher basicity of the mixed solvents and a possible dehydration of Na + and Cs + , particularly in solutions of relatively high organic solvent contents. The diffusion coefficient of Na + in ZrP decreases on addition of up to 90% methanol and acetone and the decrease is highest in the presence of 90% methanol.

show abstract

Exchange behaviour of tin, antimony and uranium in aqueous/nonaqueous media on the cation-exchanger zirconium phosphate

Cited by 6 publications

References 1 publication

Newly recognized hosts for uranium in the Hanford Site vadose zone

Newly recognized hosts for uranium in the Hanford Site vadose zone

Ion exchange

Ion Exchange Properties of Amorphous Zirconium Phosphate in Mixed Solvents

Contact Info

Product

Resources

About