SYNTHESIS, SORPTION AND KINETIC CHARACTERISTICS OF SILICA-HEXACYANOFERRATE COMPOSITES
作者:
M. Ramaswamy,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1999)
卷期:
Volume 17,
issue 6
页码: 1603-1618
ISSN:0736-6299
年代: 1999
DOI:10.1080/07366299908934668
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The precipitation behaviour of the compounds in the system, divalent metal-hexacyanoferrate(II)-sodium silicate, has been investigated. Under suitable conditions, copper, cobalt and nickel-based composite sorbents have been prepared. These sorbents were very effective in removing cesium from neutral solutions. In regard to exchange capacities, copper hexacyanoferrate (Cu-Hcf) composites exhibited highest values and these values were found to be independent of silica content. Similarly, rates of cesium uptake also were higher and these rates were not affected by granulation of copper-based materials. There was little decrease in the rates in hydrazine containing nitric acid solutions. Several cycles of batchwise sorption and desorption operations were performed with Cu-Hcf composites and quantitative recovery of cesium from loaded sorbents was achieved using nitric acid
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