US 12,290,071 B2
Performic acid biofilm prevention for industrial CO2 scrubbers
John Bolduc, Saint Paul, MN (US); Chris Nagel, Saint Paul, MN (US); Junzhong Li, Saint Paul, MN (US); Catherine Hanson, Saint Paul, MN (US); and Peter Fernholz, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Dec. 18, 2023, as Appl. No. 18/542,978.
Application 18/542,978 is a continuation of application No. 17/646,239, filed on Dec. 28, 2021, granted, now 11,882,826.
Application 17/646,239 is a continuation of application No. 16/362,885, filed on Mar. 25, 2019, granted, now 11,241,009, issued on Feb. 8, 2022.
Application 16/362,885 is a continuation of application No. 15/487,641, filed on Apr. 14, 2017, granted, now 10,278,392, issued on May 7, 2019.
Claims priority of provisional application 62/323,024, filed on Apr. 15, 2016.
Prior Publication US 2024/0114904 A1, Apr. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61L 2/00 (2006.01); A01N 25/02 (2006.01); A01N 37/02 (2006.01); A01N 37/16 (2006.01); A01N 59/00 (2006.01); A61L 2/18 (2006.01); B08B 7/00 (2006.01); B08B 9/00 (2006.01); B08B 17/00 (2006.01)
CPC A01N 37/16 (2013.01) [A01N 25/02 (2013.01); A01N 37/02 (2013.01); A01N 59/00 (2013.01); A61L 2/18 (2013.01); A61L 2/186 (2013.01); A61L 2202/11 (2013.01); A61L 2202/17 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for removing microorganisms from a system comprising:
contacting a surface in the system with a peroxyformic acid composition comprising at least about 75 ppm peroxyformic acid, wherein the composition is dosed on site and generated in situ; and
removing biofilm and microbial growth from the surface,
wherein the system is a petroleum production and/or oil recovery system, refining system, geothermal well, boiler, power generation system, mineral washing system, flotation and benefaction system, paper mill digester and washer, bleach plant system, white water system, mill water system, black liquor evaporator, air washer, continuous casting system, air conditioning system, refrigeration system, pasteurization system, water reclamation system, purification system, membrane filtration system, food processing system, and/or waste treatment system.