METHOD OF PREPARING SORBENTS FOR METAL IONS (VARIANTS) AND METHOD FOR ISOLATION OF A METAL ELEMENT FROM ITS SOLUTION Russian patent published in 1997 - IPC

Abstract RU 2072895 C1

FIELD: adsorption technics. SUBSTANCE: metal element hydrogel is adsorbed with an adsorbent prepared by treating condensed tannin with a base in presence or absence of an aldehyde in order to avoid precipitation of cross-linked tannin and to isolate hydrogel. Adsorbent is distinguished with high adsorption capacity in respect to metal elements and manifests a low resistance to stream when used in a charged column. EFFECT: improved adsorption capacity. 17 cl, 7 dwg

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RU 2 072 895 C1

Authors

Vataru Sirato[Jp]

Dates

1997-02-10—Published

1992-07-08—Filed