	US 12,391,587 B2
	Method for producing water containing permanganate ions
Masayoshi Takahashi, Sendai (JP)
Assigned to TOHOKU UNIVERSITY, Sendai (JP)
Appl. No. 18/015,704
Filed by TOHOKU UNIVERSITY, Sendai (JP)
PCT Filed Jul. 21, 2021, PCT No. PCT/JP2021/027308 § 371(c)(1), (2) Date Jan. 11, 2023, PCT Pub. No. WO2022/019327, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 2020-125863 (JP), filed on Jul. 22, 2020.
Prior Publication US 2023/0286840 A1, Sep. 14, 2023
Int. Cl. C02F 1/66 (2023.01); C01G 45/12 (2025.01); C02F 1/68 (2023.01); C02F 1/78 (2023.01)

CPC C02F 1/68 (2013.01) [C01G 45/12 (2013.01); C02F 1/66 (2013.01); C02F 1/78 (2013.01)]

7 Claims

1. A method for producing water containing permanganate ions, comprising dissolving a divalent inorganic iron compound and a divalent manganese compound in water with a pH of less than 3.5, and then feeding ozone microbubbles into the water.