Method for the removal of ultrafine particulates from an aqueous

Details Method for the removal of ultrafine particulates from an aqueous Method for the removal of ultrafine particulates from an aqueous

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.

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