US 12,440,804 B2
Water sorbing materials and related systems and methods
Saeed Alhassan, Abu Dhabi (AE); Safiya Khalil, Abu Dhabi (AE); Alya Alkaabi, Abu Dhabi (AE); Hamda Alblooshi, Abu Dhabi (AE); Hajar Aljaberi, Abu Dhabi (AE); and Hemant Mittal, Abu Dhabi (AE)
Assigned to Khalifa University of Science and Technology, Abu Dhabi (AE)
Appl. No. 18/020,988
Filed by Khalifa University of Science and Technology, Abu Dhabi (AE)
PCT Filed Aug. 31, 2021, PCT No. PCT/IB2021/057938
§ 371(c)(1), (2) Date Feb. 13, 2023,
PCT Pub. No. WO2022/049480, PCT Pub. Date Mar. 10, 2022.
Claims priority of provisional application 63/073,300, filed on Sep. 1, 2020.
Prior Publication US 2023/0285893 A1, Sep. 14, 2023
Int. Cl. B01D 53/04 (2006.01); B01D 53/26 (2006.01); B01D 53/28 (2006.01); E03B 3/28 (2006.01)
CPC B01D 53/28 (2013.01) [B01D 53/0438 (2013.01); B01D 53/261 (2013.01); E03B 3/28 (2013.01); B01D 2253/202 (2013.01); B01D 2259/40088 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A water collection device comprising:
one or more water sorbing materials including at least a first thermo-responsive polymer that sorbs water at temperatures above an upper critical solution temperature and desorbs water below the upper critical solution temperature, wherein the first thermo-responsive polymer includes poly(acrylamide-acrylic acid) copolymer.
 
15. A method of harvesting water comprising:
exposing one or more water sorbing materials to an environment, wherein the one or more water sorbing materials includes at least a first thermo-responsive polymer that sorbs water at temperatures above an upper critical solution temperature and desorbs water at temperatures below the upper critical solution temperature, wherein the first thermo-responsive polymer includes poly(acrylamide-acrylic acid) copolymer; and
collecting water desorbed from the first thermo-responsive polymer.