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Removal of pertechnetate ion (99m TcO-4) from radioactive waste using anion-exchange paper membrane

100%

Inoue H. , Lakshmi S. , Yamasaki M. , Ymagishi S. I.

tom Vol. 31, nr 3-4

119-126

In order to treat simply and safely the waste-containing radioactive technetium, a study of the removal of pertechnetate ion (the main chemical form of technetium) from radioactive waste was carried out using an anion-exchange membrane in which trimethylhydroxylpropylammonium groups were homoge-neously dispersed with high density. flux through the paper membrane is larger than that through a polymer membrane; moreover, in the paper membrane can exist in the membrane phase in spite of the presence of a large amount of Cl-. The anion-exchange paper membrane possesses three outstanding characteristics: (1) higher fluxes of and Cl- than that of the polymer membrane, (2) almost the same occupation of in available ion-exchange sites as in the polymer membrane, and (3) higher diffusional membrane permeability ratio than that of the polymer membrane.

Femoral neck and trochanteric fracture of senile patients in rural area

100%

Inoue H. , Kanai A. , Sunohara H. , Miya M.

nr 2

Effects of supersonic treatment on lactoferrin separation from whey waste using reversed micellar system

88%

Inoue H. , Yamasaki M. , Lakshmi D. S. , Kojo T. , Yamagishi S. I.

tom Vol. 31, nr 3-4

5-12

A cationic oleic acid reversed micellar system was used to simplify and enhance the purification of bovine lactoferrin (Lfn) from whey. The rate of Lfn extraction by the application of 30 kHz supersonic treatment to the organic solvent phase (P < 0.01) was by 1.5 time higher compared to non-supersonic treatment. An increase in water content and the light scatter were observed in the organic phase when the supersonic treatment was applied. An increase in the efficiency of Lfn extraction by supersonic treatment of an organic phase was attributable to increased water dispersion in the organic solvent phase and an increase in the orientation of the cationic oleic acid towards microparticles of water in organic solvent phase.