Magnetic adsorption material containing humic acid as well as preparation method and application of magnetic adsorption material

A magnetic adsorption material, humic acid technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of complex operation, poor regeneration performance, low removal efficiency, etc.

Pending Publication Date: 2021-09-07
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high cost, complicated operation, low removal efficiency and poor regeneration performance of heavy metal ions, dyes and antibiotics polluted water in the prior art, the purpose of the present invention is to provide a method for preparing organic solid waste and iron-containing solid waste. The method of humic acid magnetic adsorption material

Method used

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  • Magnetic adsorption material containing humic acid as well as preparation method and application of magnetic adsorption material
  • Magnetic adsorption material containing humic acid as well as preparation method and application of magnetic adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1.0 g of iron-containing solid waste and 1.0 g of organic solid waste were mixed uniformly and dried to obtain a humic acid-containing magnetic adsorption material precursor. The precursor of the magnetic adsorption material containing humic acid was placed in a porcelain boat, heated to 500 °C for 3 h in a tube furnace with a nitrogen atmosphere, and the heating rate was 10 °C / min. Subsequently, the product obtained by calcination at N 2 After cooling to room temperature in the atmosphere, the pH of the cleaning solution was neutralized by several times of centrifugal washing. After the product was dried at 100°C, it was ground with an agate mortar and passed through a 100-mesh sieve to obtain a magnetic adsorption material (Fe 3 o 4 / C-500). Iron-containing solid waste in this embodiment is Fenton sludge (mass percentage): 31.0% Fe, 25.5% Zn, 14.7% Ca, 6.3% S, 2.6% Al, 2.5% Cu, 2.2% Si, 9.8% Cr, 1.9%P, 1.1%Cl, the balance is impurities; organic solid waste is munic...

Embodiment 2

[0036] 1.0 g of iron-containing solid waste and 1.0 g of organic solid waste were mixed uniformly and dried to obtain a magnetic adsorption material precursor. The magnetic adsorption material precursor was placed in a porcelain boat, heated to 600° C. for 3 h in a tube furnace with a nitrogen atmosphere, and the heating rate was 10° C. / min. Subsequently, the product obtained by calcination at N 2 After cooling to room temperature in the atmosphere, the pH of the cleaning solution was neutralized by several times of centrifugal washing. After the product was dried at 100°C, it was ground with an agate mortar and passed through a 100-mesh sieve to obtain a magnetic adsorption material (Fe 3 o 4 / C-600).

[0037] In this embodiment, the iron-containing solid waste is Fenton's sludge (mass percentage): In this embodiment, the iron-containing solid waste is Fenton's sludge (mass percentage): 31.0% Fe, 25.5% Zn, 14.7% Ca, 6.3% S, 2.6% Al, 2.5% Cu, 2.2% Si, 9.8% Cr, 1.9% P, 1.1%...

Embodiment 3

[0040] 1.0 g of iron-containing solid waste and 1.0 g of organic solid waste were mixed uniformly and dried to obtain a magnetic adsorption material precursor. The magnetic adsorption material precursor was placed in a porcelain boat, heated to 500° C. for 3 h in a tube furnace with a nitrogen atmosphere, and the heating rate was 10° C. / min. The product obtained by calcination is in N 2 After cooling to room temperature in the atmosphere, the pH of the cleaning solution was neutralized by several times of centrifugal washing. After the product is dried at 100°C, the magnetic adsorption material is obtained. The magnetic adsorption material is placed in a porcelain boat, and placed in a tube that is fed with humid air (humidity is 96%-98%) and the heating rate is 10°C / min. Calcined at 300°C for 0.5h in a type furnace. The product that obtains uses agate mortar to grind, crosses 100 mesh sieves, obtains containing humic acid magnetic adsorption material (Fe 3 o 4 / C@HA-500)....

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Abstract

The invention belongs to the technical field of adsorption materials, and discloses a magnetic adsorption material containing humic acid as well as a preparation method and an application thereof. The method comprises the following steps: 1) taking iron-containing solid waste and organic solid waste as precursors of the humic acid-containing magnetic adsorption material; 2) roasting the humic acid-containing magnetic adsorption material precursor to obtain a magnetic adsorption material; or 3) carrying out secondary hydration oxidation on the magnetic adsorption material to obtain the humic acid-containing magnetic adsorption material. The method is simple and low in cost, the prepared adsorption material has good adsorption performance on heavy metal ions, dyes and antibiotics, and the purpose of treating waste with waste is achieved. The adsorption material is excellent in magnetic property, high in chemical stability and excellent in regeneration performance, and meets the requirements of large-scale industrial production and popularization and use. The adsorption material is used for removing heavy metal ions, dyes and/or antibiotics in a water body.

Description

technical field [0001] The invention belongs to the technical field of water treatment and adsorption materials, in particular to a humic acid-containing magnetic adsorption material and its preparation method and application. Background technique [0002] As an important part of the ecological environment, water resources are not only the core resources for human life and life, but also the database of biogeochemical cycles. However, with the development of society, the problem of environmental pollution is becoming more and more serious, especially the problem of water pollution has become a major problem that cannot be ignored and needs to be solved urgently. At present, common water pollutants mainly include pollutants such as heavy metal ions, dyes and antibiotics. Among them, heavy metal ions seriously threaten human health and living environment due to their persistence, diffusion, accumulation and latent characteristics. Heavy metal ions have become a class of water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20C02F101/30
CPCB01J20/24B01J20/28009C02F1/286C02F2101/20C02F2101/308
Inventor 宿新泰向宇佳林璋张丽娟万娟娟
Owner SOUTH CHINA UNIV OF TECH
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