Methods and apparatus using hydrogels

Details Methods and apparatus using hydrogels Methods and apparatus using hydrogels

1996-01-25

1998-06-23

Drodge, Joseph W.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

2103216, 210644, 422101, 422102, 435 71, 436514, 436518, 436824, B01D 1100, B01D 6140, G01N 33558

Patent

active

057700869

ABSTRACT:
The hydrogel-forming polymers are used as absorbents for collecting and concentrating solutions. A solution to be concentrated can be contained in a dialysis membrane, with the hydrogel-forming polymer, or mixture thereof, on the outer surface of the membrane. A hydrogel-forming polymer can be added directly to the solution to be concentrated and the resulting concentrate separated from the gel by filtration of decanting. A hydrogel-forming polymer can be placed in a container formed of porous material and the container can be added to the solution to be concentrated and physically removed after concentration has occurred. Hydrogel-forming polymer can be used as a liquid collection in diagnostic membrane assay cartridges.

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