Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1999-03-05
2000-11-28
Drodge, Joseph W.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210639, 210666, 210774, 502411, 588 11, B01D 1100
Patent
active
061531030
ABSTRACT:
A method of separating ultra-fine particulates from an aqueous suspension such as a process stream or a waste stream. The method involves the addition of alkali silicate and an organic gelling agent to a volume of liquid, from the respective process or waste stream, to form a gel. The gel then undergoes syneresis to remove water and soluble salts from the gel containing the particulates, thus, forming a silica monolith. The silica monolith is then sintered to form a hard, nonporous waste form.
REFERENCES:
patent: 4518508 (1985-05-01), Conner
patent: 4695511 (1987-09-01), Goodman et al.
patent: 5395532 (1995-03-01), Chaiko
patent: 5494863 (1996-02-01), Mathur
patent: 5948726 (1999-09-01), Moskovitz et al.
Chaiko David J.
Ellison Adam J. G.
Kopasz John P.
Drodge Joseph W.
Dvorscak Mark P.
Moser William R.
Smith Bradley W.
The United States of America as represented by the United States
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