Preparation method of ferrosilicon binary oxide ozonization catalyst with goethite structure

Abstract

The invention provides a preparation method of a ferrosilicon binary oxide ozonization catalyst with a goethite structure and relates to the preparation method of the ferrosilicon binary oxide ozonization catalyst, aiming at solving the problems that goethite is difficult to recycle and secondary pollution is caused. The preparation method comprises the following steps: preparing a trivalent ironsalt solution A; adding a silicate solution into the trivalent iron salt solution A; uniformly mixing to obtain a suspension solution B; dropwise adding an alkaline solution into the suspension solution B; while dropwise adding, magnetically stirring until no brown sediment is generated in the suspension solution B, so as to obtain a suspension solution C; adjusting the pH (Potential of Hydrogen)of the suspension solution C; then standing and precipitating; finally, carrying out activation treatment to obtain a mixed solution D; after filtering the mixed solution, obtaining a solid-phase matter; and washing and drying the solid-phase matter. The ferrosilicon binary oxide ozonization catalyst with the goethite structure, prepared by the invention, is easily subjected to solid-water separation; and a condition that secondary pollution is caused due to catalyst loss is avoided and the utilization safety is ensured. The preparation method is suitable for preparing the ozonization catalyst.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a preparation method of an ozonation catalyst of ferrosilicon binary oxide. Background technique [0002] Traditional treatment processes are difficult to effectively remove some refractory harmful pollutants in water, and these refractory harmful pollutants directly threaten the water quality safety of urban water supply. In the field of water treatment, the heterogeneous catalytic ozonation process has become a current research hotspot because of its high-efficiency oxidation performance and easy preparation of catalysts. Studies have found that goethite has strong activity in catalytic ozone removal of organic matter in water and its chemical properties are stable. However, goethite nanoparticles and water form a suspension, which is difficult to separate, so goethite is easy to lose and difficult to recycle. ; The lost goethite will remain in the treated water, cau...

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Problems solved by technology

[0003] In order to solve the problem that goethite is difficult to recycle and cause secondary pollution, the present invention proposes a preparation method of ozonation catalyst of ferrosilicon binary oxide with goethite structure

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