Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal
Patent
1998-09-14
1999-10-19
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iib metal
75742, C22B 4300
Patent
active
059684615
ABSTRACT:
The present invention relates to a process for cleaning mercury-contaminated soils that is simple, efficient and safe to use. This process can also be used to clean soils contaminated with additional metals, such as zinc, copper and lead, at a lower pH. The present invention involves screening the contaminated soil to remove unwanted materials, leaching the contaminated soils with hypochlorite in a screw reactor, thickening, leaching with hypochlorite and sodium chloride, thickening again and then separating the mercury-containing liquids from the clean soil. This invention also relates to a process which uses sulfide to treat the mercury-containing liquids.
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El-Shoubary Youssef
Lavosky William F.
Seth Subash C.
Speizer Ned A.
Bos Steven
Daniel Mark R.
Merck & Co. , Inc.
Pecoraro Dianne
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