Method of preparing metal element adsorbent and method of adsorb

Details Method of preparing metal element adsorbent and method of adsorb Method of preparing metal element adsorbent and method of adsorb

1992-06-26

1994-06-14

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

2523151, 252322, 502400, 502401, C22B 100

Patent

active

053206649

ABSTRACT:
A metal element adsorbent in the form of a hydrogel prepared by treating a condensed tannin with a base, in the presence or absence of an aldehyde so as to avoid precipitation of cross-linked tannin and produce a hydrogel. The inventive adsorbent exhibits high adsorption properties for metal elements and a low flow resistivity when used in a packed column. Methods for use of the inventive adsorbent are disclosed.

REFERENCES:
patent: 974448 (1910-11-01), Supf
patent: 1545321 (1925-07-01), Hebden

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