Process for the removal of metals from solution

Details Process for the removal of metals from solution Process for the removal of metals from solution

1977-07-22

1979-09-11

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 38B, B01D 1504, C02B 116, C02C 502

Patent

active

041674812

ABSTRACT:
Several metal ions, such as mercury, cadmium, copper, zinc, nickel and cobalt, may be removed from waste waters and similar solutions by treating such solutions with a cation exchanger in the presence of a polyamine. A treatment with clay minerals such as bentonite or montmorillonite in the presence of tetraethylenepentamine is preferred. The solution may be first combined with polyamine and then contacted with the cation exchanger, but in a preferred embodiment, the polyamine and cation exchanger are combined first to form a solid adsorbent and then contacted with the solution.

REFERENCES:
patent: 3118831 (1964-01-01), Morris
patent: 3320033 (1967-05-01), Goren
patent: 3487928 (1970-01-01), Canevari
patent: 3755161 (1973-08-01), Yokota et al.
patent: 3932274 (1976-01-01), Izumi et al.
Chemical Abstracts, 1224036, vol. 75, 1971.

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