US 12,330,962 B1
Method for purifying polluted water
Mohamed Khairy Abdel Fattah Omran, Riyadh (SA); Mohamed Mokhtar Mohamed, Benha (EG); Salah Ahmed Ibrahim Eid, Sakaka (SA); and Babiker Yagoub Elhadi Abdulkhair, Riyadh (SA)
Assigned to IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY, Riyadh (SA)
Filed by IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY, Riyadh (SA)
Filed on Jan. 29, 2025, as Appl. No. 19/039,812.
Application 19/039,812 is a continuation of application No. 18/934,939, filed on Nov. 1, 2024, granted, now 12,240,768.
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/28 (2023.01); B01J 20/06 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B01J 20/34 (2006.01); C02F 101/30 (2006.01)
CPC C02F 1/288 (2013.01) [B01J 20/06 (2013.01); B01J 20/28007 (2013.01); B01J 20/28019 (2013.01); B01J 20/3071 (2013.01); B01J 20/3085 (2013.01); B01J 20/3433 (2013.01); B01J 20/3475 (2013.01); C02F 1/281 (2013.01); C02F 2101/308 (2013.01); C02F 2303/16 (2013.01); C02F 2305/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of purifying polluted water, comprising:
adding dry sulfur-doped Ag2WO4 nanoparticles to an aqueous solution comprising one or more pollutants while stirring the aqueous solution to form a mixture,
mixing the mixture to adsorb at least a portion of the one or more pollutants on the sulfur-doped Ag2WO4 nanoparticles; and
collecting a filtrate, wherein the filtrate has less of the one or more pollutants than the aqueous solution,
wherein the amount of sulfur present in the sulfur-doped Ag2WO4 nanoparticles is in a range from 5 to 30 wt. % of the total weight of the sulfur-doped Ag2WO4 nanoparticles, and
wherein the sulfur-doped Ag2WO4 nanoparticles have an average particle diameter ranging from 2 to 40 nm.