High-activity aluminum oxide three-dimensional electrode particle filler as well as preparation method and application thereof

A technology of three-dimensional electrodes and alumina, which is applied in chemical instruments and methods, wastewater treatment in processing, and special treatment targets, etc., can solve problems such as agglomeration and loss of active components, achieve simple preparation process, reduce preparation cost, and repeat The effect of high utilization

Active Publication Date: 2020-03-24
INST OF ANALYSIS GUANGDONG ACAD OF SCI (CHINA NAT ANALYTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Effectively solve the problems of agglomeration and loss of active components during the use of existing fillers

Method used

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  • High-activity aluminum oxide three-dimensional electrode particle filler as well as preparation method and application thereof
  • High-activity aluminum oxide three-dimensional electrode particle filler as well as preparation method and application thereof
  • High-activity aluminum oxide three-dimensional electrode particle filler as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of a highly active alumina three-dimensional electrode particle filler in this embodiment comprises the following steps:

[0029] (1) Alumina carrier pretreatment: the γ-Al 2 o 3 After washing with deionized water, dry at 100°C for 12 hours, and set aside;

[0030] (2) Microwave pretreatment: Weigh 5.9g glucose, 1.2g nickel acetate tetrahydrate, 3.0g copper acetate monohydrate and 0.95g cobalt acetate tetrahydrate, place in 40mL 10% v / v dilute nitric acid, heat to dissolve at 80°C, Then add the γ-Al after step (1) pretreatment 2 o 3 20g, microwave hydrothermal reaction at 170°C for 20min; after the reaction, dry at 100°C to obtain the pretreated particle filler;

[0031] (3) Quartz sand roasting: put the pretreated particle filler obtained in step (2) into a crucible, cover the surface with a layer of quartz sand, roast in a muffle furnace at 800°C for 4 hours, and remove it after cooling to room temperature. Quartz sand is used to obtain hi...

Embodiment 2

[0034]The preparation method of a highly active alumina three-dimensional electrode particle filler in this embodiment comprises the following steps:

[0035] (1) Alumina carrier pretreatment: the γ-Al 2 o 3 After washing with deionized water, dry at 100°C for 12 hours, and set aside;

[0036] (2) Microwave pretreatment: Weigh 3.0g glucose, 1.2g nickel acetate tetrahydrate, 3.0g copper acetate monohydrate and 0.95g cobalt acetate tetrahydrate, place in 40mL 10% v / v dilute nitric acid, heat to dissolve at 80°C, Then add the γ-Al after step (1) pretreatment 2 o 3 20g, microwave hydrothermal reaction at 170°C for 20min; after the reaction, dry at 100°C to obtain the pretreated particle filler;

[0037] (3) Quartz sand roasting: put the pretreated particle filler obtained in step (2) into a crucible, cover the surface with a layer of quartz sand, and roast in a muffle furnace at 800°C for 4 hours, and remove the quartz after cooling to room temperature. sand to obtain highly...

Embodiment 3

[0045] The preparation method of a highly active alumina three-dimensional electrode particle filler in this embodiment comprises the following steps:

[0046] (1) Alumina carrier pretreatment: the γ-Al 2 o 3 After washing with deionized water, dry at 100°C for 12 hours;

[0047] (2) Microwave pretreatment: Weigh 5.9g glucose, 2.4g nickel acetate tetrahydrate, 6.0g copper acetate monohydrate and 1.9g cobalt acetate tetrahydrate, place in 40mL 10% v / v dilute nitric acid, heat to dissolve at 80°C, Then add the γ-Al after step (1) pretreatment 2 o 3 20g, microwave hydrothermal reaction at 170°C for 20min; after the reaction, dry at 100°C;

[0048] (3) Quartz sand roasting: the pretreated particle filler obtained in step (2) is packed into a crucible, the surface is covered with a layer of quartz sand, roasted at 600° C. for 4 hours, and the quartz sand is removed after being cooled to room temperature to obtain high Activated alumina three-dimensional electrode particle fil...

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Abstract

The invention provides a high-activity aluminum oxide three-dimensional electrode particle filler as well as a preparation method and application thereof. The preparation of the particle filler comprises the steps of alumina carrier pretreatment, microwave pretreatment and quartz sand roasting. A high-activity particle electrode is prepared by combining microwave pretreatment with a quartz sand roasting method, graphite flakes are used as a positive electrode and a negative electrode, and organic pollutants in wastewater are treated by utilizing a three-dimensional electrode electro-catalyticoxidation method, so that the removal efficiency is improved while the preparation cost is reduced. The prepared electro-catalytic particle filler electrode can be applied to removal of ammonia nitrogen and chemical oxygen demand (COD) indexes in black and odorous water, printing and dyeing wastewater, papermaking wastewater and other water bodies.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a high-activity alumina three-dimensional electrode particle filler and a preparation method and application thereof. Background technique [0002] Electrocatalytic oxidation is one of the most widely used technologies in advanced oxidation technology. This method uses catalysts to reduce the activation energy of the reaction and increase the generation of hydroxyl radicals in active components, thereby improving the removal effect of organic pollutants. Three-dimensional electrode technology is a kind of electrochemical catalytic oxidation technology. Three-dimensional electrode filler is the core part of this technology, and its performance directly affects the treatment effect of this technology on organic pollutants. At present, the catalytic fillers based on this technology are generally iron-carbon fillers, but there are many problems in the application proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F103/28C02F101/16
CPCC02F1/46109C02F2001/46133C02F2101/16C02F2303/02C02F2103/28Y02W10/10
Inventor 雷永乾刘宁郭鹏然管鹏
Owner INST OF ANALYSIS GUANGDONG ACAD OF SCI (CHINA NAT ANALYTICAL
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