公开(公告)号：US12285747B2

公开(公告)日：2025-04-29

申请号：US18459263

申请日：2023-08-31

Applicant: Harbin Institute of Technology

Inventor： Panpan Wang ,  Han Wang ,  Jun Ma ,  Shiyi Qiu ,  Junda Yi

IPC: B01J35/00 ,  B01D43/00 ,  B01J23/34 ,  B01J31/02 ,  B01J37/04

Abstract: A method of utilizing humic acid to prepare layered humic acid/manganese oxide composite catalyst and its application, the method includes the steps of: adding sodium hypochlorite, manganese salt and humic acid to a water source, stirring and mixing; then introducing into a filter device having a filter material of manganese and a support medium, and generating a layered humic acid/manganese oxide composite catalyst on a surface of the filter material while directing a continuous water flow of the water source into the filter device with a short empty bed contact time for a short time. The catalyst can be used to effectively remove manganese to maintain an effluent with a Mn2+ concentration of not more than 20 μg/L and to effectively remove heavy metals such as iron, manganese, arsenic, thallium, molybdenum or lead from the water source under neutral, acidic or alkaline conditions with a removal rate of 95% more.