US 12,109,537 B1
Bi-layered superhydrophobic membrane for water filtration
Junaid Saleem, Doha (QA); Safdar Hossain Sk, Hofuf (SA); Zubair Khalid Baig Moghal, Doha (QA); and Gordon McKay, Doha (QA)
Assigned to KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed by KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed on Feb. 16, 2024, as Appl. No. 18/444,479.
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 61/14 (2006.01); B01D 17/04 (2006.01); B01D 69/02 (2006.01); B01D 69/12 (2006.01); B01D 71/26 (2006.01)
CPC B01D 69/02 (2013.01) [B01D 17/04 (2013.01); B01D 61/147 (2013.01); B01D 69/1218 (2022.08); B01D 71/262 (2022.08); B01D 2325/0233 (2022.08); B01D 2325/04 (2013.01); B01D 2325/06 (2013.01); B01D 2325/24 (2013.01); B01D 2325/38 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A bi-layered superhydrophobic membrane, comprising:
a porous top layer formed from about 75% to about 100% polypropylene; and
a porous base layer formed from about 75% to about 100% polypropylene, the porous base layer being less porous than the porous top layer,
wherein a thickness of the bi-layered superhydrophobic membrane ranges from about 100 μm to about 1 mm,
wherein a surface roughness of the bi-layered superhydrophobic membrane ranges from about 120 nm to about 130 nm, and
wherein a thickness of the top layer of the bi-layered superhydrophobic membrane ranges from about 60 μm to about 600 μm.