US 12,285,747 B2
Method of utilizing humic acid to prepare layered humic acid/manganese oxide composite catalyst and its method of use thereof
Panpan Wang, Harbin (CN); Han Wang, Harbin (CN); Jun Ma, Harbin (CN); Shiyi Qiu, Harbin (CN); and Junda Yi, Harbin (CN)
Filed by Harbin Institute of Technology, Heilongjiang (CN)
Filed on Aug. 31, 2023, as Appl. No. 18/459,263.
Prior Publication US 2024/0066512 A1, Feb. 29, 2024
Int. Cl. B01J 35/00 (2024.01); B01D 43/00 (2006.01); B01J 23/34 (2006.01); B01J 31/02 (2006.01); B01J 37/04 (2006.01)
CPC B01J 35/19 (2024.01) [B01D 43/00 (2013.01); B01J 23/34 (2013.01); B01J 31/0237 (2013.01); B01J 37/04 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/9022 (2013.01); B01D 2257/60 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of preparing layered humic acid/manganese oxide composite catalyst comprises the following steps:
(a) adding sodium hypochlorite, manganese salt and humic acid to a water source, stirring and mixing to obtain a water source containing sodium hypochlorite, manganese and humic acid;
in step (a), in the water source containing sodium hypochlorite, manganese and humic acid, a concentration of manganese ions is 0.005 mg/L-50 mg/L, a concentration of humic acid is 0.1 mg/L-20 mg/L, and a concentration of sodium hypochlorite is 0.01 mg/L-10 mg/L,
(b) introducing the water source containing sodium hypochlorite, manganese and humic acid into a manganese-loaded filter column, a manganese-loaded filter tank or a manganese-loaded filter pool, wherein an empty bed contact time of the manganese-loaded filter column, manganese-loaded filter tank or manganese-loaded filter pool is 5 minutes-60 minutes; and processing operation for 10 minutes or more, during operation, generating a layered humic acid/manganese oxide composite catalyst on a surface of a filter material to obtain a filter column, a filter tank or a filter pool having a layered humic acid/manganese oxide composite catalyst on a surface of the filter column, the filter tank or the filter pool,
wherein the layered humic acid/manganese oxide composite catalyst is used to remove heavy metals from a water source containing heavy metals under neutral, acidic or alkaline condition, the water source containing heavy metals is selected from the group consisting of surface water, ground water, low temperature and low turbidity water and sewage, the heavy metals are on more of iron, manganese, arsenic, thallium, molybdenum and lead.