Process for removing heavy metals from fluid media
OwnerMarcel Laszloinventor
Life of this patent
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Abstract
A process in which metal foil is introduced into a fluid containing one or more heavy metals, so that one part of the surface of the foil is in contact with the fluid and another part thereof is in contact with air and that an activator in the form of a solution of a complex compound, preferably based on the metal comprising the foil, preferably an NaAl complex, is brought into contact with the foil and the fluid whereby the metal or metals precipitate and after precipitation are separated from the fluid in a way known per se.
Claims17
A method for removing one or more heavy metals from a fluid containing same, said heavy metal being selected from the group consisting of mercury, lead, cobalt, silver, gold, copper, zinc, cadmium, bismuth, manganese, arsenic, tin and nickel, which comprises the steps of placing a metal sheet in said fluid so that a portion of the surface of said sheet contacts said fluid and another portion of said sheet surface contacts the ambient air, said metal sheet being made of a metal having a lower redox potential than said heavy metal;
- contacting said fluid and said sheet with a solution of a complex effective as an activator to cause said heavy metal to precipitate in the fluid;
- and then separating said precipitate from said fluid.
Dependencies are inferred from the claim text.