A kind of regeneration adsorption material and preparation method thereof

A technology of adsorption materials and composite adsorption materials, which is applied in the field of preparation of environmentally friendly materials, can solve problems such as high production costs, consumption of natural resources, and difficulty in improving adsorption efficiency, so as to improve adsorption performance, reduce eutrophication of water bodies, and increase specific surface area Effect

Active Publication Date: 2022-07-15
HEFEI BAIHE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Application Information

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Problems solved by technology

The existing adsorption materials are mainly activated carbon, but the preparation of activated carbon is mainly carbonized wood, which not only consumes a lot of natural resources, but also has high production costs, and it is difficult to improve the adsorption efficiency.

Method used

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  • A kind of regeneration adsorption material and preparation method thereof
  • A kind of regeneration adsorption material and preparation method thereof
  • A kind of regeneration adsorption material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0025] Preparation of activated sludge adsorption material: after filter-pressing the remaining activated sludge, drying it in a nitrogen atmosphere to obtain the dried sludge; thermally cracking the dried sludge in a nitrogen atmosphere to obtain the activated sludge Adsorbent material; the moisture content of the residual activated sludge after filter press is 60-80wt%; the drying temperature is 80-200°C and the time is 10-80min; the thermal cracking temperature is 500-800°C and the time is 10-80min.

[0026] The activated mud adsorption material is used to adsorb algae and its pollutants in the water body to obtain sediment, and then the sediment is separated to obtain a mixture containing algae, sludge and activated mud adsorption material, and the mixture is dried at 100-200 ° C for 60- 120min, until the moisture content is not more than 20%; after 60-120min oxygen-free carbonization at 600-800 ℃, until the moisture content is not more than 1wt%; put the carbonized materia...

Embodiment 1

[0028] The precipitation material is separated and then subjected to drying treatment in sequence, and the treatment condition is drying at 200 ° C for 60 min; the moisture content of the material after drying treatment is 20 wt%; the dried material is then carbonized under the condition of 600 ° C without Oxygen carbonization for 120min, the moisture content of the material after carbonization treatment is less than 1wt%; steam activation treatment is carried out in a muffle furnace, and the treatment process is: put the carbonized material to be activated into the reaction tube of the muffle furnace, and continue to Pour nitrogen into the muffle furnace, and after the air in the tube is exhausted, pass water vapor at 600 mL / min, and at the same time raise the temperature at 18°C / min to the activation temperature of 810°C for activation for 60min, and cool down to room temperature at 25°C / min after activation , that is, the regenerated composite adsorption material is obtained...

Embodiment 2

[0030] The precipitation materials were separated and then subjected to drying treatment in sequence, and the treatment conditions were drying at 100 °C for 120 min; the moisture content of the materials after drying treatment was 18wt%; the dried materials were then carbonized, and the conditions were 800 °C without Oxygen carbonization for 60min, the moisture content of the material after carbonization treatment is less than 1wt%; the water vapor activation treatment is carried out in a muffle furnace, and the treatment process is: put the carbonized material to be activated into the reaction tube of the muffle furnace, and continue to Pour nitrogen into the muffle furnace, and after the air in the tube is exhausted, pass in water vapor at 700 mL / min, and at the same time raise the temperature at 15 °C / min to the activation temperature of 800 °C for 80 min, and after the activation is completed, cool down to room temperature at 20 °C / min , that is, the regenerated composite a...

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Abstract

The invention relates to a regenerative adsorption material and a preparation method thereof, belonging to the technical field of preparation of environmental protection materials. The preparation method comprises the following steps: placing an activated sludge adsorption material prepared from excess activated sludge in a water body, and treating the algae and the algae in the water body. The pollutants are adsorbed to obtain precipitation, and then the precipitate is separated, and the separated precipitate is sequentially subjected to drying treatment, carbonization treatment, and water vapor activation treatment to obtain a regenerated composite adsorption material. Because the organic matter content of the regenerated composite adsorption material prepared by the invention is significantly increased, the carbonized regeneration composite adsorption material is a multi-component phase, has multi-shaped pores, and the pore size structure and specific surface area are significantly improved, so that the adsorption effect is better. And it is easy to reuse the waste.

Description

technical field [0001] The invention relates to the technical field of preparing environmental protection materials, in particular to a regenerative adsorption material and a preparation method thereof. Background technique [0002] Adsorbent materials are widely used in water pollution treatment because of their abundant voids and large body surface area. The existing adsorption materials are mainly activated carbon, but the preparation of activated carbon is mainly based on carbonized wood, which not only consumes a lot of natural resources, but also has high production costs, and it is difficult to improve the adsorption efficiency. SUMMARY OF THE INVENTION [0003] In order to solve the deficiencies of the above technical problems, one of the objects of the present invention is to provide a preparation method of a regenerated adsorbent material. The preparation method has low production cost and high adsorption efficiency of the prepared regenerative composite adsorbe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/52C02F101/32
CPCB01J20/20B01J20/28059C02F1/285C02F1/5236C02F2101/322
Inventor 丁睿李艳娟孔庆玲严春婷
Owner HEFEI BAIHE ENVIRONMENTAL PROTECTION TECH CO LTD
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