Liquid purification or separation – With means to add treating material – With distinct reactor tank – trough or compartment
Patent
1981-06-17
1984-02-21
Cintins, Ivars C.
Liquid purification or separation
With means to add treating material
With distinct reactor tank, trough or compartment
B01J 806
Patent
active
044328729
ABSTRACT:
A plate or hollow cylinder of coarsely porous graphite is coated with a layer of finely porous activated carbon that has previously been heat-treated. The fine layer is impregnated with a catalyst either before or after application to the graphite body. A gas is caused to flow through the graphite body and out through the finely porous layer containing the catalyst, to react with substances in a solution in which the carrier body is immersed. For oxidation, air can be used, and for reduction, hydrogen. In this manner, sulfite can be oxidized or chromate reduced and hydrogen gas can also be used to precipitate platinum, rhodium, copper and other metals from solution. Electro-chemical activation or regeneration of the catalyst is possible by applying a potential to the carrier body. The reaction can be carried on in solutions in which solids are suspended without clogging the catalyst.
REFERENCES:
patent: 3396123 (1968-08-01), Urban
patent: 3433358 (1969-03-01), Herzog et al.
patent: 3933643 (1976-01-01), Colvin et al.
patent: 3950251 (1976-04-01), Hiller
patent: 4013554 (1977-03-01), Reis et al.
patent: 4159309 (1979-06-01), Faul et al.
"Technische Information" Nr. 17, 1978, Katalytische Metall-Ruckgewinnung aus wassrigen Losungen.
Faul Wolfgang
Kastening Bertel
Cintins Ivars C.
Kernforschungsanlage Julich GmbH
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