US 12,269,764 B2
Hydrogels for the entrapment of bacteria
Raymond Redcorn, Seattle, WA (US); Mari-Karoliina Henriikka Winkler, Seattle, WA (US); Bruce Godfrey, Seattle, WA (US); and David A. Stahl, Seattle, WA (US)
Assigned to University of Washington, Seattle, WA (US)
Appl. No. 17/767,613
Filed by University of Washington, Seattle, WA (US)
PCT Filed Oct. 13, 2020, PCT No. PCT/US2020/055402
§ 371(c)(1), (2) Date Apr. 8, 2022,
PCT Pub. No. WO2021/076508, PCT Pub. Date Apr. 22, 2021.
Claims priority of provisional application 62/914,884, filed on Oct. 14, 2019.
Prior Publication US 2024/0076221 A1, Mar. 7, 2024
Int. Cl. C02F 3/10 (2023.01); C02F 3/28 (2023.01); C02F 3/34 (2023.01); C12N 11/04 (2006.01); C12N 11/08 (2020.01); C12N 11/084 (2020.01); C12N 11/087 (2020.01); C12N 11/12 (2006.01); C02F 103/00 (2006.01)
CPC C02F 3/341 (2013.01) [C02F 3/108 (2013.01); C02F 3/2806 (2013.01); C12N 11/04 (2013.01); C12N 11/084 (2020.01); C12N 11/087 (2020.01); C12N 11/12 (2013.01); C02F 2103/005 (2013.01)] 18 Claims
OG exemplary drawing
 
1. 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).