METHOD OF PREPARING SORBENTS Russian patent published in 1997 - IPC

Abstract RU 2079359 C1

FIELD: sorbents; environmental safety. SUBSTANCE: to obtain materials with high sorption characteristics in respect to metal ions, including radionuclides and mercury ions being most dangerous constituents of industrial wastes, sawdust of various tree species is treated with mix containing phosphoric acid, dimethylformamide, and urea at boiling temperature for 2-5 h. EFFECT: simplified procedure and reduced cost. 1 tbl

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RU 2 079 359 C1

Authors

Velichko B.A.

Shutova L.A.

Ryzhakova A.A.

Abramova G.V.

Fomenko A.S.

Albulov A.I.

Dates

1997-05-20—Published

1995-07-28—Filed