Method for selectively capturing metal ions

Details Method for selectively capturing metal ions Method for selectively capturing metal ions

1975-10-23

1977-10-18

Wyse, Thomas G.

Liquid purification or separation

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

Responsive to fluid flow

209167, 423 26, B03D 100

Patent

active

040545164

ABSTRACT:
A method for selectively capturing metal ions by treating a solution conting ions of heavy metals, such as cupric ions, zinc ions, etc., at an adjusted pH value with a metal capturing agent comprising a condensation product of a higher fatty acid or derivative thereof with an excess of a polyamine, for example, a condensation product of decanoic acid and a polyamine. Heavy metal ions contained in effluents from mines and factories are selectively captured and separated according to this method.

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patent: 3640862 (1972-02-01), Gieseke et al.
patent: 3768646 (1973-10-01), Grannen
patent: 3932274 (1976-01-01), Izumi et al.

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