Recovery of ammoniacal copper with novel organogels

Details Recovery of ammoniacal copper with novel organogels Recovery of ammoniacal copper with novel organogels

1984-03-05

1986-11-11

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 27, 524 87, 524167, 524210, 524357, C08D 520

Patent

active

046223444

ABSTRACT:
There is disclosed novel copper ion-exchange media and processes for the recovery of cupric ion from ammoniacal copper solutions and for the recovery of spent printed circuit board etchant. The novel ion-exchange media comprise hydrophobic nonporous polymer plasticized and swollen with a monomeric organic liquid copper ion-exchange agent such as beta-diketones or hydroxyoximes. A novel copper ion-complexing agent, 1-n-octylphenyl-p-1,3-butanedione, is also disclosed. The processes essentially comprise contacting the ammoniacal cupric ion-containing solution or spent etchant with the novel copper ion-exchange media to extract copper in cupric ion form. Copper can be recovered therefrom by conventional methods such as acid stripping and electrowinning.

REFERENCES:
patent: 2465296 (1949-03-01), Swiss
patent: 2615857 (1952-10-01), Clarke
patent: 3030416 (1962-04-01), Donatus et al.
patent: 3506620 (1970-04-01), Davis et al.
Oesch et al, Anal. Chem., 52:692-700, (1980).

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