Alloy catalyst for oxidising impurities in acidic waste water

A catalyst to oxidise impurities in acid waste water in the presence of hydrogen peroxide and oxygen is claimed, which contains 10-40 wt.% manganese, 10-25 wt.% chromium and 50-70 wt.% iron. The catalyst is prepared by heating the alloy for 0.3 to 3 hours at 300-1200 deg C in an oxygen-containing at...

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Main Authors TAUCHNITZ, HEIKO., 06688 WENGELSDORF, DE, HERDA, WILFRIED, 40490 DUESSELDORF, DE, KOPPE, JUERGEN., 06258 SCHKOPAU, DE, LAUSCH, HARTMUT., 06128 HALLE, DE, EICHHORST, VOLKER., 06110 HALLE, DE, HEUBNER, ULRICH., 58791 WERDOHL, DE
Format Patent
LanguageEnglish
German
Published 29.01.1998
Edition6
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:A catalyst to oxidise impurities in acid waste water in the presence of hydrogen peroxide and oxygen is claimed, which contains 10-40 wt.% manganese, 10-25 wt.% chromium and 50-70 wt.% iron. The catalyst is prepared by heating the alloy for 0.3 to 3 hours at 300-1200 deg C in an oxygen-containing atmosphere. Also claimed is a process for oxidising the impurities as above, by bringing the water into contact with the catalyst for 1-60 minutes, with the waste water running through or over the catalyst.
Bibliography:Application Number: DE1996130043