Method of recovering a cleaning agent

Details Method of recovering a cleaning agent Method of recovering a cleaning agent

2007-11-20

2007-11-20

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

C423S035000, C423S050000, C423S299000

Reexamination Certificate

active

10768671

ABSTRACT:
The invention provides a method of recovering a copper component or a manganese component from a cleaning agent containing copper oxide, a cleaning agent containing basic copper carbonate, a cleaning agent containing copper hydroxide, or a cleaning agent containing copper oxide and manganese oxide, the cleaning agents having been used for removing, through contact with a harmful gas, a phosphine contained as a harmful component in the harmful gas. Also, the invention provides a method of recovering a copper component or a manganese component from a cleaning agent containing basic copper carbonate, a cleaning agent containing copper hydroxide, or a cleaning agent containing copper oxide and manganese oxide, the cleaning agents having been used for removing, through contact with a harmful gas, a phosphine contained as a harmful component in the harmful gas. According to the present invention, the copper component and/or the manganese component can be effectively recovered from the cleaning agents in a recyclable form.

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