Preparation method of electrocatalytic oxidation particle electrode

Abstract

The invention discloses a preparation method of an electrocatalytic oxidation particle electrode. The preparation method comprises the following steps: pretreating activated carbon, eluting carbon powder, sulfur, sulfide and other impurities attached to the activated carbon, and functionalizing the surface of the activated carbon; then carrying out contact reaction on lead acetate impregnation liquid and the activated carbon, and precipitating lead dioxide in inner holes of the activated carbon and on the surface of the activated carbon through a precipitation process; and finally, carrying out drying and curing to form a product. According to the invention, the load type lead dioxide electrocatalytic oxidation particle electrode is produced on a large scale, and the electrode is loaded into a specially-made anode, so an electrocatalytic oxidation technology can be applied to actual sewage treatment. The electrode produced by the invention can replace a titanium-based plate-type electrode in traditional two-dimensional electrocatalytic oxidation equipment, the adsorption function of the activated carbon is utilized to improve organic pollutant treatment efficiency, and equipment cost is greatly reduced at the same time; and meanwhile, the synergistic effect of the activated carbon carrier improves the current efficiency of organic pollutant treatment, and reduces the comprehensive cost of organic sewage treatment, so the particle electrode has better comprehensive economic benefits.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic oxidation electrodes, and in particular relates to a preparation method of electrocatalytic oxidation particle electrodes. Background technique [0002] Electrocatalytic oxidation refers to the direct electrochemical reaction of organic pollutants on the electrode or the use of strong oxidizing active substances on the electrode surface to cause redox transformation of pollutants. The mechanism of direct electrochemical reaction is that water produces hydroxyl radicals through electrochemical action. Hydroxyl radicals are the strongest oxidants in water, and can oxidize most of the organic and inorganic pollutants in water, and oxidize them into carbon dioxide. and water and other harmless substances; and use the surface of the electrode to generate strong oxidizing active substances such as hypochlorite / Fenton reagent, etc. These oxidizing agents have strong oxidizing properties, and pol...

AI Technical Summary

Problems solved by technology

In the large-scale sewage treatment process, there are disadvantages such as small treatment capacity per unit tank and low current efficiency, especially when the conductivity of the wastewater is low, it is necessary to add additional electrolytes to work normally, resulting in high construction and treatment costs. Therefore, the application of electrocatalytic oxidation technology in the field of sewage treatment is severely limited.

Images