Preparation method of coal-based carbon-based carbon nanotube based on hydrogen peroxide wastewater treatment

Abstract

The invention discloses a preparation method of a coal-based carbon-based carbon nanotube based on hydrogen peroxide wastewater treatment, and belongs to the technical field of hydrogen peroxide wastewater treatment and application. The preparation method comprises the following steps: S1, carrying out coarse filtration pretreatment on organic wastewater containing polycyclic anthraquinones generated in a hydrogen peroxide production process to obtain filtrate; S2, adjusting the pH value of the filtrate, conducting treating with a Fenton reagent, and then adding a polyether modified organic silicon type defoaming agent to obtain waste liquid containing Fe<3+>; S3, adding dilute nitric acid into the waste liquid, conducting standing after the reaction is completed, and conducting filtering to obtain a mixed liquid; S4, taking long flame coal, and carrying out isovolumetric mixing and impregnation on the long flame coal and the mixed solution to obtain a mixture; and S5, transferring the mixture into a muffle furnace to obtain the coal containing the coal-based carbon nanotubes. According to the method, hydrogen peroxide wastewater is treated, and then iron and organic matter in the hydrogen peroxide wastewater reacts to obtain the coal-based carbon-based carbon nanotubes.

Description

technical field [0001] The invention relates to the technical field of hydrogen peroxide wastewater treatment and application, more specifically, it relates to a method for preparing coal-based carbon-based carbon nanotubes based on hydrogen peroxide wastewater treatment. Background technique [0002] Hydrogen peroxide wastewater is one of the very large amounts of wastewater produced in the chemical industry. It mainly contains anthraquinone polycyclic aromatic hydrocarbons. Because it is difficult to treat efficiently, it has attracted the attention of a large number of researchers. The Fenton method for industrial wastewater treatment is also an international treatment of wastewater. The mainstream method, but the organic matter and iron ions contained in the wastewater are usually not well utilized and discharged directly. In order to avoid the waste of resources and promote green chemical processes to a certain extent, it is necessary to design more recycling and utiliza...

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Problems solved by technology

[0004] Chinese patents CN202010448273.8 (application number) and CN202010132264.8 (application number) respectively use cheap coal or methane as a carbon source to prepare carbon nanotubes (or methods). The former utilizes pyrolysis gas produced by coal pyrolysis The sulfur oxides brought out are absorbed by semi-coke, and the thiophene refractory gases produced are involved in the formation of carbon nanotubes, which utilize pure methane and CO 2 Formation of carbon deposits during reforming produces carbon nanotubes, but neither pre-treats the feedstock

Chinese patent CN200710198794.7 (application number) directly grows carbon nanotubes on the carbon surface, and then on the surface of the carbon nanotubes, the carbon nanotube electrode is supported by chemical vapor deposition method and the carbon nanotube electrode. The carbon nanotube electrode, but its The manufacturing cost is high, the process is relatively complicated, and the requirements for the production environment and equipment are high

[0005] Chinese patent CN201210361045.2 (application number) also uses supercritical water oxidation treatment method, which mentions that organic wastewater passes through high-pressure pump and preheater in turn, and simultaneously uses compressor to divert oxygen into the oxidation device. This patent uses synthetic Gas is used as the source of supercritical gas, but after the completion of the supercritical oxidation process, the organic matter is still completely oxidized, which is a waste of resources for organic matter with utilization value