A kind of preparation method and application of calcium silicate adsorption material

An adsorption material, calcium silicate technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, silicon compounds, etc., can solve the problems of high cost of calcium silicate materials, limited adsorption capacity, difficult to popularize and apply, etc. The effect of resource utilization, low production cost, and pollution reduction

Active Publication Date: 2022-02-22
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the existing adsorbents for treating water body pollutants, and the calcium silicate materials prepared by the prior art are expensive, low in efficiency, limited in adsorption capacity and difficult to popularize and apply. The use of discarded shells and Glass to prepare calcium silicate adsorbent materials for sewage treatment

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  • A kind of preparation method and application of calcium silicate adsorption material
  • A kind of preparation method and application of calcium silicate adsorption material
  • A kind of preparation method and application of calcium silicate adsorption material

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Embodiment 1

[0049] The preparation of embodiment 1 calcium silicate adsorption material

[0050] (1) Recover discarded oyster shells and glass, transport them back to the processing base, put them into a drum sieve with an aperture of 13mm, and build a high-pressure water gun with a flushing pressure of 700bar. Combine the drum sieve and high-pressure water gun to clean the discarded shells and glass respectively, Remove the dust and sand; put the cleaned glass into a crusher for crushing, and then load it into a gravity separator to separate lighter paper scraps, bamboo wood chips, plastics, film and film-containing glass particles Separation from the heavier glass slag to remove impurities from the glass and obtain glass slag;

[0051] (2) Put the discarded shells separated by washing into a high-temperature calcination kiln, and calcine them at 800°C for 3 hours. The main component of the shells, CaCO 3 Calcined into CaO, the reaction is as follows:

[0052] CaCO 3 →CaO+CO 2 ↑

[...

Embodiment 2

[0056] The preparation of embodiment 2 calcium silicate adsorption material

[0057] (1) Recover discarded oyster shells and glass, transport them back to the processing base, put them into a drum sieve with an aperture of 13mm, and build a high-pressure water gun with a flushing pressure of 700bar. Combine the drum sieve and high-pressure water gun to clean the discarded shells and glass respectively, Remove the dust and sand; put the cleaned glass into a crusher for crushing, and then load it into a gravity separator to separate lighter paper scraps, bamboo wood chips, plastics, film and film-containing glass particles Separation from the heavier glass slag to remove impurities from the glass and obtain glass slag;

[0058] (2) Put the discarded shells separated by washing into a high-temperature calcination kiln, and calcine them at 800°C for 3 hours. The main component of the shells, CaCO 3 Calcined into CaO, the reaction is as follows:

[0059] CaCO 3 →CaO+CO 2 ↑

[...

Embodiment 3

[0063] The preparation of embodiment 3 calcium silicate adsorption material

[0064] (1) Recover discarded oyster shells and glass, transport them back to the processing base, put them into a drum sieve with an aperture of 13mm, and build a high-pressure water gun with a flushing pressure of 700bar. Combine the drum sieve and high-pressure water gun to clean the discarded shells and glass respectively, Remove the dust and sand; put the cleaned glass into a crusher for crushing, and then load it into a gravity separator to separate lighter paper scraps, bamboo wood chips, plastics, film and film-containing glass particles Separation from the heavier glass slag to remove impurities from the glass and obtain glass slag;

[0065] (2) Put the discarded shells separated by washing into a high-temperature calcination kiln, and calcine them at 800°C for 3 hours. The main component of the shells, CaCO 3 Calcined into CaO, the reaction is as follows:

[0066] CaCO 3 →CaO+CO 2 ↑

[...

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Abstract

The invention discloses a preparation method and application of a calcium silicate adsorption material. In this method, waste shells and glass are used as raw materials, and calcium oxide powder and glass powder are pretreated, and the calcium oxide powder, glass powder and sodium hydroxide are prepared according to the molar ratio of Ca:Si:Na: 0.6-2.2:1:1.1-1.5 Add it into the reaction vessel, and then add water into the reaction vessel according to the water: solid mass ratio of 10-30:1 to carry out the alkali-water heat-sealing reaction. The preparation method of the present invention is simple to operate, rich in sources of raw materials and low in price, realizes high-value reuse of waste, improves resource utilization, and at the same time, the prepared calcium silicate adsorption material can be used as an efficient method for treating water body pollutants. Inexpensive adsorbent, easy to realize industrial production, has potential practical application value.

Description

technical field [0001] The invention belongs to the technical field of chemical production. More specifically, it relates to a preparation method and application of a calcium silicate adsorption material. Background technique [0002] At present, the unreasonable discharge of urban domestic sewage and industrial wastewater in my country has led to serious water pollution problems. The eutrophication of water bodies caused by phosphorus and nitrogen plasma, while heavy metals such as copper and lead are highly toxic and difficult to biodegrade, are harmful to humans. They are one of the most common water pollution. Therefore, new materials and methods are urgently needed to deal with them. [0003] Adsorption method is a common method for removing pollutants in water bodies. It can effectively remove various pollutants in wastewater. It has the advantages of high efficiency, low cost, and no secondary pollution. The most common adsorbents include activated carbon, fly ash, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30C02F1/28C02F101/20C02F101/16C02F101/10
CPCB01J20/10C02F1/281C02F2101/105C02F2101/16C02F2101/20
Inventor 李进段婷婷邓凯张宇梁燕秋郑超蔺中钟来元
Owner GUANGDONG OCEAN UNIVERSITY
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