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Composite adsorption material and preparation method thereof

A composite adsorption material and material technology, which is applied in the field of organic-inorganic mineral water treatment and purification materials and its preparation, can solve the problems of limited material absorption capacity, limited effect, and low specific surface area of ​​adsorbents, and achieve the expansion of scope, simple method, easy-to-handle effects

Active Publication Date: 2021-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mullite, analcite, and diatomaceous earth adsorbents used in this method have low specific surface area and limited absorption capacity for various organic molecular pollutants.
At the same time, the yeast used cannot degrade inorganic metal ions
CN201510688988.X provides a modified walnut shell activated carbon adsorbent and its preparation method, which is mainly used for the adsorption and removal of heavy metal ions, and has limited effect on organic pollutants
[0005] The adsorption materials used in the existing adsorption method to treat industrial sewage generally have the following disadvantages: the saturated adsorption capacity of different adsorption materials is different, and it is limited by the pore structure and surface structure of the adsorbent. It is difficult for a single-character adsorption material to achieve broad spectrum performance. Ground treatment of a wide variety of organic and inorganic pollutants in water bodies with different properties

Method used

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  • Composite adsorption material and preparation method thereof
  • Composite adsorption material and preparation method thereof
  • Composite adsorption material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] At room temperature, mix water, sodium hydroxide, silica sol, and N-methylpyrrolidine according to a certain ratio, then heat in sealed water at 90°C for 24 hours, cool to room temperature, and then add the spare sodium metaaluminate powder to the above solution in, and stir well. The final material ratio satisfies: Al 2 o 3 / SiO 2 =30, N-Methylpyrrolidine / SiO 2 =0.15,OH - / SiO 2 =0.75,H 2 O / SiO 2 =40. Afterwards, the above mixture was ultrasonically (1.0 KW / L) and magnetically stirred at 40°C for 3 hours, and then placed in a reaction kettle for crystallization at 175°C for 120 hours. The obtained product was washed with distilled water, dried at 120°C, and then calcined at 550°C for 5 hours. It is confirmed to be analcime by XRD detection, observed by scanning electron microscope, it is spherical shape, the grain size is about 30nm, it belongs to ultrafine nanoscale range, and the specific surface area is 270m 2 / g. Mix 200-mesh coal fly ash (with 10-100μm ...

Embodiment 2

[0036] At room temperature, mix water, sodium hydroxide, silica sol, and N-methylpyrrolidine according to a certain ratio, then heat in sealed water at 100°C for 24 hours, cool to room temperature, and then add the spare sodium metaaluminate powder to the above solution in, and stir well. The final material ratio satisfies: Al 2 o 3 / SiO 2 =40, N-Methylpyrrolidine / SiO2 =0.20,OH - / SiO 2 =0.8,H 2 O / SiO 2 =60. Afterwards, the above mixture was ultrasonically stirred (0.5 KW / L) at 60°C for 3 hours, and then placed in a reaction kettle for crystallization at 180°C for 140 hours. The obtained product was washed with distilled water, dried at 120°C, and then calcined at 550°C for 5 hours. The product was confirmed to be analcime by XRD detection, observed by scanning electron microscope, it was spherical shape, the grain size was about 35nm, belonging to the nanoscale range, and the specific surface area was 212m 2 / g. Mix 500-mesh coal fly ash (with large and super-large ...

Embodiment 3

[0038] At room temperature, mix water, sodium hydroxide, silica sol, and N-methylpyrrolidine according to a certain ratio, then heat in sealed water at 120°C for 6 hours, cool to room temperature, and then add aluminum isopropoxide powder to the above solution, and stir well. The final material ratio satisfies: Al 2 o 3 / SiO 2 =60, N-Methylpyrrolidine / SiO 2 =0.25,OH - / SiO 2 =0.9,H 2 O / SiO 2 =80. Afterwards, the above mixture was ultrasonically (2.0 KW / L) and magnetically stirred at 50°C for 3 hours, and then placed in a reactor for crystallization at 180°C for 140 hours. The obtained product was washed with distilled water, dried at 120°C, and then calcined at 550°C for 5 hours. The product was confirmed to be analcime by XRD detection, observed by scanning electron microscope, it was in spherical shape, the grain size was about 18nm, it belonged to ultra-fine nanometer range, and the specific surface area was 380m 2 / g. Mix 500-mesh coal fly ash (with 10-100μm mac...

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Abstract

The invention discloses a composite adsorption material and a preparation method thereof. The composite adsorption material comprises 5-50% of fly ash, 10-50% of activated carbon and 5-60% of nano analcime, wherein the fly ash and the analcime are integrally connected through the activated carbon. The specific surface area of the composite adsorption material is 300-1500m<2> / g, the pore volume ofthe composite adsorption material 0.3-1.5cm<3> / g, and the mechanical strength of the composite adsorption material is 5-25N / mm. The preparation method includes: mixing the fly ash, the superfine analcime and water-soluble phenolic resin, forming and performing high-temperature curing. The composite adsorption material can adsorb various organic pollutants and heavy metal ions in wastewater in a broad spectrum manner.

Description

technical field [0001] The invention relates to the field of water treatment and environmental protection, in particular to an organic-inorganic mineral water treatment purification material with coal powder ash, ultrafine analcite and activated carbon as main raw materials and a preparation method thereof. Background technique [0002] With the development of petrochemical and related industries, organic wastewater has become one of the main sources of water pollution. The composition of organic wastewater is complex, the content of organic matter is large, and most of them exist in the form of aromatic groups such as benzene, naphthalene, anthracene, and quinone, which have the characteristics of deep color, strong toxicity, and refractory degradation. serious threat. In addition, with the rapid development of industry and the unreasonable discharge of wastewater, the pollution of heavy metals in water is becoming more and more serious. Heavy metal wastewater mainly comes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
CPCB01J20/16B01J20/20C02F1/281C02F1/283
Inventor 杨卫亚凌凤香沈智奇郭长友季洪海王丽华王少军张会成
Owner CHINA PETROLEUM & CHEM CORP
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