Liquid purification or separation – Processes – Chemical treatment
Patent
1996-03-11
1997-06-10
Nessler, Cynthia L.
Liquid purification or separation
Processes
Chemical treatment
210912, C02F 172
Patent
active
056372329
ABSTRACT:
A improved process is provided for the catalytic oxidation of ferrous iron in liquid media in the presence of oxygen. The improvement is provided by the use of a carbonaceous char catalytically active for said oxidation which is prepared by the carbonization and oxidation of a bituminous coal or a bituminous material at temperatures below 700.degree. C. followed by exposure of the carbonized, oxidized char to a nitrogen-containing compound and, during or after said exposure, increasing the temperature to at least 700.degree. C.
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Calgon Carbon Corporation
Nessler Cynthia L.
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