Authors: S V S Rao R Lekshmi A G S Mani P K Sinha
Publish Date: 2009/11/11
Volume: 283, Issue: 2, Pages: 379-384
Abstract
Composite ionexchange resins were prepared by coating copperferrocyanide CFC and hydrous manganese oxide HMO powders on polyurethane PU foam Polyvinyl acetate/Acetone was used as a binder The foam was loaded with about five times its weight with CFC and HMO powders The distribution coefficients of CFCPU foam and HMOPU foam for cesium and strontium respectively were estimated Under similar conditions the HMOPU foam showed higher capacity as well as better kinetics for removal of strontium than CFCPU foam for Cs The pilot plant scale studies were conducted using a mixed composite ionexchange resin bed About 1000 bed volumes could be passed before attaining a DF of 10 from an initial value of 60–80 The spent resin was digested in alkaline KMnO4 and the digested liquid was fixed in cement matrix The matrices were characterized with respect to compressive strength and leach resistance
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