Simplified process for leaching precious metals from fuel...

Details Simplified process for leaching precious metals from fuel... Simplified process for leaching precious metals from fuel...

2007-08-24

2009-12-22

Lorengo, Jerry (Department: 1793)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C075S744000, C423S022000

Reexamination Certificate

active

07635534

ABSTRACT:
The membrane electrode assemblies of fuel cells are recycled to recover the catalyst precious metals from the assemblies. The assemblies are cryogenically embrittled and pulverized to form a powder. The pulverized assemblies are then mixed with a surfactant to form a paste which is contacted with an acid solution to leach precious metals from the pulverized membranes.

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