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Adsorbent for eliminating methylene blue in water as well as preparation method and application thereof

A methylene blue and adsorbent technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of small adsorption capacity and poor adsorption selectivity, and achieve easy regeneration, stable performance, and improved efficiency Effect

Active Publication Date: 2018-08-14
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a commonly used adsorption material for wastewater treatment, activated carbon usually has the advantages of low cost and can adsorb a variety of pollutants. However, due to the poor selectivity and small adsorption capacity of activated carbon to methylene blue, it is difficult to meet the needs of methylene blue removal in water. Therefore, the development of An adsorbent with high adsorption capacity and good selectivity for methylene blue, which is of great significance to the development of water treatment and environmental protection in my country

Method used

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  • Adsorbent for eliminating methylene blue in water as well as preparation method and application thereof
  • Adsorbent for eliminating methylene blue in water as well as preparation method and application thereof
  • Adsorbent for eliminating methylene blue in water as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 1 g of cetyltrimethylammonium bromide and 0.6 mL of sodium hydroxide (0.1 mol / L) into 50 mL of water, and stir at 40 degrees Celsius for 3 hours;

[0025] (2) Add 15 mL tetraethyl orthosilicate and 0.5 mL cyclopentane to the solution in the above step (1), continue to stir for 48 hours, centrifuge, wash and dry;

[0026] (3) Disperse 200 mg of the amorphous silica material synthesized in the above step (2) in ethanol, add 5 mL of ammonia water and 0.4 g of silver nitrate, sonicate for 40 minutes, centrifuge, wash, and dry; Amorphous silica material.

Embodiment 2

[0028] (1) Add 1 g of cetyltrimethylammonium bromide and 0.8 mL of sodium hydroxide (0.1 mol / L) into 50 mL of water, and stir at 60 degrees Celsius for 3 hours;

[0029] (2) Add 20 mL tetraethyl orthosilicate and 1 mL cyclopentane to the solution in the above step (1), continue to stir for 24 hours, centrifuge, wash and dry;

[0030] (3) Disperse 100 mg of the amorphous silica material synthesized in the above step (2) in ethanol, add 5 mL of ammonia water and 0.4 g of silver nitrate, sonicate for 40 minutes, centrifuge, wash, and dry; Amorphous silica material.

Embodiment 3

[0032] (1) Add 1 g of cetyltrimethylammonium bromide and 1 mL of sodium hydroxide (0.1 mol / L) into 50 mL of water, and stir at 80 degrees Celsius for 3 hours;

[0033] (2) Add 30 mL tetraethyl orthosilicate and 2 mL cycloheptane to the solution in the above step (1), continue to stir for 24 hours, centrifuge, wash and dry;

[0034] (3) Disperse 150 mg of the amorphous silica material synthesized in the above step (2) in ethanol, add 5 mL of ammonia water and 0.4 g of silver nitrate, sonicate for 40 minutes, centrifuge, wash, and dry; Amorphous silica material.

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Abstract

The invention discloses an adsorbent for eliminating methylene blue in water as well as a preparation method and application thereof. The adsorbent comprises a nanometer silver oxide loaded amorphoussilicon oxide material. The preparation method of the adsorbent comprises the following steps of (1) preparation of amorphous silicon oxide carrier materials: mixing cetyl trimethyl ammonium bromide and sodium hydroxide solution; performing stirring at a certain temperature; then, adding a mixture of ethyl orthosilicate, cyclopentane or cycloheptane; continuously performing stirring, centrifugation, washing and drying to obtain the amorphous silicon oxide; (2) preparation of silver oxide loaded amorphous silicon oxide material: adding silver nitrate ethanol solution and ammonium hydroxide; performing ultrasonic treatment, centrifugation, washing and drying to prepare the nanometer oxide silver loaded amorphous silicon oxide material. The method has the advantages that the preparation process is simple; the prepared adsorption material has relatively strong adsorption removal capability on methylene blue; the methylene blue in the waste water can be effectively eliminated; in addition,the adsorption material can realize the regeneration cyclic utilization.

Description

technical field [0001] The invention belongs to the field of water body environment treatment, and in particular relates to an adsorbent for removing methylene blue in water, a preparation method and application thereof. Background technique [0002] In recent years, water pollution has become one of the most significant environmental problems in the world today, especially in our country at this stage. Methylene blue is an important organic dye widely used in chemical indicators, dyes, biological stains and medicines. The wastewater discharged from various chemical industries involved in the methylene blue dyeing process contains high concentrations of methylene blue. On the other hand, a very small amount of methylene blue in the wastewater can easily cause high chroma in the wastewater, and this type of wastewater is harmful to humans and other organisms. Toxic, therefore, must be removed. [0003] At present, the treatment methods of organic chemical wastewater reporte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30C02F1/28C02F101/36C02F101/38
CPCB01J20/06B01J20/103B01J20/28007B01J20/28016C02F1/281C02F2101/36C02F2101/38C02F2101/40
Inventor 闫新龙胡晓燕周敏
Owner CHINA UNIV OF MINING & TECH
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