Method for the removal of ultrafine particulates from an aqueous suspension

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873406

Chaiko, David J ^[1]; Kopasz, John P ^[2]; Ellison, Adam J. G. ^[3]

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1. Naperville, IL
2. Bolingbrook, IL
3. Corning, NY

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 6153103
• OSTI ID: 873406
• Country of Publication: United States
• Language: English

Related Subjects

method
removal
ultrafine
particulates
aqueous
suspension
separating
ultra-fine
process
stream
waste
involves
addition
alkali
silicate
organic
gelling
agent
volume
liquid
respective
form
undergoes
syneresis
remove
water
soluble
salts
containing
forming
silica
monolith
sintered
hard
nonporous
soluble salts
aqueous suspension
fine particulate
waste form
waste stream
process stream
method involves
remove water
soluble salt
method involve
move water
/210/502/588/