Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal
Patent
1992-04-06
1994-03-15
Langel, Wayne
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iib metal
210753, 210754, 210756, C02F 176
Patent
active
052944174
ABSTRACT:
A process for the removal of mercury from industrial waste streams is disclosed wherein the waste stream is a nitrate based solution that has been decomposed by the addition of hypochlorite. The method involves adding a reducing agent to reduce the hypochlorite and/or adjusting the pH by the use of a strong acid to less than about 2.0, converting any residual chlorine to a soluble unreactive salt, adding a soluble precipitating agent, such as sodium sulfide, to the solution in a ratio to the mercury present of greater than 1:1 to about 2:1 to precipitate out the mercury as a mercury compound. The solution is then filtered to remove the precipitated mercury compound.
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Burger Carey O.
Casteel Jeffery D.
Dotson Ronald L.
Mellor Richard E.
Moore Sanders H.
Carlson Dale Lynn
Langel Wayne
Olin Corporation
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