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US 12,269,764 B2Granted
Hydrogels for the entrapment of bacteria
AssigneeUniversity of Washington
InventorsRaymond Redcorn, Mari-Karoliina Henriikka Winkler, Bruce Godfrey, David A. Stahl
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Abstract
Hydrogels for entrapment of live microorganisms and methods of their use, such as in wastewater purification, are disclosed.
Claims18
A composition for reducing the concentration of one or more contaminants in a fluid, comprising:
- a plurality of particles comprising a hydrogel core surrounded by a polymer shell, wherein the hydrogel core further comprises microorganisms,
- wherein the polymer shell is bound to the hydrogel core by covalent bonding, ionic bonding, or a combination thereof,
- wherein the hydrogel core comprises (a) alginate and a polymer of one or more acylate derivatives of polyethylene glycol (PEG);
- or (b) polyvinyl alcohol (PVA), alginate, and carboxymethyl cellulose (CMC).
1 more element
Dependencies are inferred from the claim text.