	US 12,005,486 B2
	Method to remediate contaminated soil
Omer Refa Koseoglu, Dhahran (SA); and Robert Peter Hodgkins, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jan. 13, 2022, as Appl. No. 17/574,883.
Prior Publication US 2023/0219124 A1, Jul. 13, 2023
Int. Cl. B09C 1/00 (2006.01); B09C 1/02 (2006.01); B09C 1/08 (2006.01)

CPC B09C 1/02 (2013.01) [B09C 1/08 (2013.01)]

18 Claims

1. A method for treating soil contaminated with sulfides and disulfides, the method comprising:

analyzing the soil contaminated with sulfides and disulfides to determine the sulfide and disulfide concentrations;

determining an oxidant concentration present in an oxidant mixture based on the sulfide and disulfide concentrations;

mixing the determined amount of oxidant, and a catalyst to form the oxidant mixture;

applying the oxidant mixture onto the contaminated soil;

washing the contaminated soil with a washing solution;

inserting vacuum pipes into the contaminated soil; and

vacuuming the contaminated soil to remove at least one of the oxidant mixture, contaminants, or oxidation products, thereby treating the contaminated soil.