US 12,215,460 B2
Methods of microbial control
Wayne E. Buschmann, Boulder, CO (US)
Assigned to Clean Chemistry, Inc., Boulder, CO (US)
Filed by Clean Chemistry, Inc., Boulder, CO (US)
Filed on Nov. 24, 2021, as Appl. No. 17/535,268.
Application 17/535,268 is a continuation of application No. 16/806,148, filed on Mar. 2, 2020, granted, now 11,225,755.
Application 16/806,148 is a continuation of application No. 15/371,567, filed on Dec. 7, 2016, granted, now 10,611,656, issued on Apr. 7, 2020.
Claims priority of provisional application 62/263,900, filed on Dec. 7, 2015.
Prior Publication US 2022/0259803 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/02 (2023.01); C02F 1/50 (2023.01); C02F 1/72 (2023.01); C02F 9/00 (2023.01); C12P 3/00 (2006.01); D21C 9/10 (2006.01); D21C 9/147 (2006.01); D21C 9/16 (2006.01); C02F 1/00 (2023.01); C02F 1/76 (2023.01); C02F 103/00 (2006.01); C02F 103/02 (2006.01); C02F 103/28 (2006.01); C02F 103/32 (2006.01)
CPC D21C 9/166 (2013.01) [C02F 1/722 (2013.01); C02F 9/00 (2013.01); C12P 3/00 (2013.01); D21C 9/1063 (2013.01); D21C 9/147 (2013.01); C02F 1/008 (2013.01); C02F 1/02 (2013.01); C02F 1/50 (2013.01); C02F 1/76 (2013.01); C02F 1/766 (2013.01); C02F 2103/007 (2013.01); C02F 2103/023 (2013.01); C02F 2103/28 (2013.01); C02F 2103/32 (2013.01); C02F 2209/04 (2013.01); C02F 2209/36 (2013.01); C02F 2303/02 (2013.01); C02F 2303/04 (2013.01); C02F 2303/08 (2013.01); C02F 2303/20 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method of reducing a microbial load in contaminated feedstock materials in a fermentation processing system producing a chemical product, the fermentation system including a blending tank, and a fermenter and a recovery vessel for recovery of the chemical product, the method comprising:
providing a biomass feedstock material for fermentation;
introducing the feedstock material to a feedstock process liquid in the fermentation processing system;
mixing the feedstock process liquid in a heated blending tank;
introducing the feedstock process liquid to a fermenter;
fermenting the feedstock process liquid;
recovering the chemical product from the fermenter; and
prior to the fermenting introducing a peracetate oxidant solution to the feedstock process liquid in the blending tank, wherein the peracetate oxidant solution comprising peracetate anions and a peracid, the peracetate oxidant solution having a pH from about 10 to about 12 is added to the fermentation process at up to 130 ppm by weight and this mixture is heated to a fermentation temperature of about 50-60° C.