C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/42 (2006.01) C02F 1/58 (2006.01) C02F 1/70 (2006.01) C22B 15/00 (2006.01)
Patent
CA 2067483
This invention relates to a process for removing copper ions from highly acidic waste water generated during the manufacture of dyes or pigments or intermediates thereof. The waste water is exposed at a pH less than about 1 to a bed of suspended iron particles, preferably a fluidized bed of iron particles, having a particle size of from about 200 to about 950 micrometers.
Catlin Joseph C.
Ellis Margaret D.
Good James J.
Putnam Mark A.
Tonks Neal E.
Corporation Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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