Preparation method and application of calcium silicate adsorbing material

An adsorption material, calcium silicate technology, applied in chemical instruments and methods, adsorption water/sewage treatment, silicon compounds, etc., can solve the problems of high cost of calcium silicate materials, limited adsorption capacity, difficulty in popularization and application, etc., and achieve raw materials Sufficient sources, low production costs, and low prices

Active Publication Date: 2019-03-19
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method and application of calcium silicate adsorbing material
  • Preparation method and application of calcium silicate adsorbing material
  • Preparation method and application of calcium silicate adsorbing material

Examples

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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 adsorbing material. The preparation method includes: using waste shell and glass as raw materials, pretreating to obtain calcium oxide powder and glass powder, adding the calcium oxide powder, the glass powder and sodium hydroxide according to a molar ratio of Ca:Si:Na of 0.6-2.2:1:1.1-1.5 into a reaction container,adding water according to a mass ratio of water to solid of 10-30:1 into the reaction container for alkali hydrothermal reaction. The preparation method is simple in operation, rich in raw material source and low in cost, and high-value reutilization of waste is realized, so that resource utilization rate is increased; a prepared calcium silicate adsorption material can serve as an efficient cheap adsorbent for treating water pollutants, and the preparation method is easy for industrial production and has potential 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 Applications(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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