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Preparation method of sludge-based metal organic framework material

A metal-organic framework and organic framework technology, applied in the field of sludge recycling, can solve the problem of the safe and harmless disposal rate of sludge being less than 30%, and achieve the improvement of the density of catalytic active sites, the simple preparation process, and the improvement of stability. Effect

Inactive Publication Date: 2021-04-06
HEFEI CEMENT RES DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, my country's sludge treatment is still in its infancy, and the safe and harmless disposal rate of sludge is less than 30%. The disposal of sludge has become an urgent problem.

Method used

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  • Preparation method of sludge-based metal organic framework material
  • Preparation method of sludge-based metal organic framework material

Examples

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Effect test

Embodiment 1

[0027] A method for preparing a sludge-based metal-organic framework material, specifically comprising the following steps:

[0028] Use an electronic balance to weigh 20g of municipal sludge samples (water content 90%), filter through a sieve with a diameter of 7mm, separate impurities and then homogenize the sludge by stirring. Add concentrated sulfuric acid to adjust the pH of the liquid sample to 0.5, put it in a hydrothermal reaction kettle, and react at 130°C for 4 hours. After it is naturally cooled to room temperature, move the liquid to the reflux device, and continue to add concentrated sulfuric acid to make its concentration 4mol / L, heating and reflux reaction for 20 hours, after the reaction, naturally cool to room temperature, take a small amount of liquid to measure its amino acid content by ninhydrin colorimetry, and dissolve the remaining liquid in N, N-dimethyl formaldehyde after lyophilization In the amide solution, add zinc nitrate hexahydrate and terephthal...

Embodiment 2

[0030] A method for preparing a sludge-based metal-organic framework material, specifically comprising the following steps:

[0031] Use an electronic balance to weigh 20g of municipal sludge samples (water content 85%), filter through a sieve with a diameter of 7mm, separate impurities and then homogenize the sludge by stirring. Add concentrated sulfuric acid to adjust the pH of the liquid sample to 1.5, put it into a hydrothermal reaction kettle, and react at 125°C for 5 hours. After it is naturally cooled to room temperature, move the liquid to the reflux device, and continue to add concentrated sulfuric acid to make its concentration 4 mol / L, heat and reflux for 16 hours, after the reaction, cool naturally to room temperature, take a small amount of liquid to measure its amino acid content by ninhydrin colorimetry, and dissolve the remaining liquid in N,N-dimethyl formaldehyde after lyophilization In the amide solution, add zinc nitrate hexahydrate and 2-methylimidazole at...

Embodiment 3

[0033] A method for preparing a sludge-based metal-organic framework material, specifically comprising the following steps:

[0034] Use an electronic balance to weigh 20g of municipal sludge samples (water content 95%), filter through a sieve with a diameter of 7mm, separate impurities and then homogenize the sludge by stirring. Add concentrated sulfuric acid to adjust the pH of the liquid sample to 1, put it into a hydrothermal reaction kettle, and react at 135°C for 3 hours. After it is naturally cooled to room temperature, move the liquid to the reflux device, and continue to add concentrated sulfuric acid to make its concentration 4mol / L, heating and reflux reaction for 24 hours, after the reaction, naturally cool to room temperature, take a small amount of liquid and measure its amino acid content by ninhydrin colorimetry, and dissolve the remaining liquid in N,N-dimethyl formaldehyde after lyophilization In the amide solution, add zinc nitrate hexahydrate and triethylam...

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Abstract

The invention discloses a preparation method of a sludge-based metal organic framework material. According to the method, heavy metals and organic matters in the sludge are fully utilized as preparation raw materials of the functional material, and different types of amino acids with single spatial configuration are obtained by extracting and hydrolyzing proteins in the sludge through a hot acid method. Different amino acids obtained by hydrolysis are used as mixed ligands of a metal organic framework, so that the diversity of the structure can be improved, the stability of the structure is also improved due to the single spatial configuration of the amino acids, the synchronous separation confinement catalytic material is endowed with new application potential, and the resource utilization of sludge is realized.

Description

technical field [0001] The invention belongs to the technical field of sludge resource utilization, and in particular relates to a preparation method of a sludge-based metal-organic framework material. Background technique [0002] Sludge is the product of sewage purification treatment by sewage treatment plants. Its composition is very complex, containing a large amount of heavy metals and organic matter (mainly protein) and harmful substances that are difficult to degrade. With the increase of population and the development of industry, the production of different sludges such as industrial sludge and municipal sludge has also increased sharply. In 2020, my country's sludge production is expected to exceed 60 million tons (water content 80%), causing serious pollution and damage to the geological environment and ecological environment, and endangering human health. At present, my country's sludge treatment is still in its infancy, and the safe and harmless disposal rate o...

Claims

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Application Information

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IPC IPC(8): C07F15/04C07F15/06C07F3/06C02F11/00
CPCC07F15/04C07F15/06C07F3/06C02F11/00
Inventor 张山李宁苏明雪黄婷
Owner HEFEI CEMENT RES DESIGN INST
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