Removal of metals from waste materials that contain bimetallic s

Details Removal of metals from waste materials that contain bimetallic s Removal of metals from waste materials that contain bimetallic s

1978-07-11

1979-05-08

Hearn, Brian

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 43, 423112, 423127, 423277, 75117, 75118R, C01G 302, C01G 734, C01G 700, C01G 500

Patent

active

041536690

ABSTRACT:
Metals are removed from waste materials that contain an organic component and a bimetallic salt complex component that comprises complexes having the formula M.sub.I M.sub.II X.sub.n .multidot.Aromatic and/or the formula M.sub.I M.sub.II X.sub.n .multidot.M.sub.II OX.multidot.Aromatic, wherein M.sub.I is a Group I-B metal, M.sub.II is a Group III-A metal, X is halogen, n is the sum of the valences of M.sub.I and M.sub.II, and Aromatic is a monocyclic aromatic hydrocarbon or halogenated aromatic hydrocarbon having 6 to 12 carbon atoms by contacting the waste material with water and sufficient alkali metal hydroxide to form a hydrolysis mixture which has a pH above 5 and which separates into an upper organic phase and a lower aqueous phase. After separation of the phases, there is obtained a slurry of M.sub.I oxide, M.sub.I hydroxide, and/or M.sub.II hydroxide from which the metals can be recovered or which can be discarded in ways that are not damaging to the environment. This process can be used, for example, to remove copper and aluminum from waste materials that contain CuAlCl.sub.4 .multidot.toluene and/or CuAlCl.sub.4 .multidot.AlOCl.multidot.toluene.

REFERENCES:
patent: 2605166 (1952-07-01), Landa et al.
patent: 3477813 (1969-11-01), Fernald et al.
patent: 3678112 (1972-07-01), Woolensak et al.
patent: 3679751 (1972-07-01), Golden et al.
patent: 3845188 (1974-10-01), Walker et al.
patent: 3887600 (1975-06-01), Long et al.

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