US 12,290,795 B2
Multi-layered sorbent structure and a method for enhancing oil uptake performance thereof
Junaid Saleem, Doha (QA); SK Safdar Hossain, Al-Ahsa (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 Jun. 5, 2024, as Appl. No. 18/734,315.
Application 18/734,315 is a division of application No. 18/237,504, filed on Aug. 24, 2023, granted, now 12,030,034.
Prior Publication US 2025/0065303 A1, Feb. 27, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. B05D 5/00 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); C02F 1/28 (2023.01); C02F 101/32 (2006.01)
CPC B01J 20/261 (2013.01) [B01J 20/28035 (2013.01); B01J 20/3064 (2013.01); C02F 1/288 (2013.01); C02F 2101/32 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of making a multilayered zigzag-shaped oil sorbent to enhance oil uptake performance, the method comprising:
dissolving a polymer in an organic solvent to form a polymer solution;
dispersing an inorganic filler in the polymer solution to obtain a well-dispersed polymer solution;
spin coating the well-dispersed polymer solution to obtain a uniform thin film;
peeling off the uniform thin film by controlled heating to obtain a porous thin film;
extracting out the inorganic filler from the porous thin film using water, thereby obtaining a porous thin film with cavities;
superposing two such porous thin films with cavities facing each other by adding a polypropylene (PP) fibrous thin sheet between the two such porous thin films with cavities to maximize available volume for oil uptake; and
heat-sealing the superposed porous thin films with cavities in a zigzag-shape to obtain a super-sorbent multilayered zigzag-shaped oil sorbent.