Method for preparing sulfamethoxazole modified aluminum silicate fiber adsorbents

A technology of aluminum silicate fiber and sulfamethoxazole, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve problems such as degradation, and achieve strong adsorption capacity and efficiency. The effect of high, excellent mechanical stability

Inactive Publication Date: 2018-10-09
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been researches on the treatment technology of perfluoroalkyl persistent pollutants such as PFOA. Because of its excellent stability, it cannot be degraded by traditional wastewater treatment methods.
Adsorption and separation to remove organic and inorganic pollutants in environmental water has been considered to be a very effective and commonly used treatment method. The use of adsorption and separation to remove PFOA in water has become a concern for those skilled in the art. There are many reports on the use of adsorption and separation to remove PFOA. few

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Pretreatment of aluminum silicate fibers: Put 10 g of aluminum silicate fibers with a particle size of 280-320 μm in 180 mL of sodium carbonate solution with a concentration of 1.2% by mass, soak at room temperature for 6 h, separate solid and liquid, and use Ionic water washing to neutrality, drying to obtain pretreated aluminum silicate fibers;

[0019] (2) Preparation of chlorinated aluminum silicate fiber: In the reactor, add anhydrous ethanol: 78mL, 3-chloropropyltrimethoxysilane: 26g, mix well, add pretreated aluminum silicate fiber: 12g, , the temperature was raised to 65±2°C at a constant temperature, refluxed for 5 hours, separated from solid and liquid, washed with absolute ethanol, dried to obtain aluminum chlorosilicate fibers;

[0020] (3) Preparation of sulfamethoxazole modified aluminum silicate fiber adsorbent: In the reactor, add dilute hydrochloric acid: 80mL, sulfamethoxazole: 4g, stir and dissolve, add chloroaluminosilicate fiber: 15.5 g, Zinc s...

Embodiment 2

[0022] (1) Aluminum silicate fiber pretreatment: Put 80g of aluminum silicate fiber with a particle size of 280~320μm in 1200mL of sodium carbonate solution with a concentration of 1.2% by mass, soak at room temperature for 6 hours, separate solid and liquid, use Ionic water washing to neutrality, drying to obtain pretreated aluminum silicate fibers;

[0023] (2) Preparation of chlorinated aluminum silicate fiber: In the reactor, add anhydrous ethanol: 760mL, 3-chloropropyltrimethoxysilane: 270g, mix well, add pretreated aluminum silicate fiber: 130g, , the temperature was raised to 65±2°C at a constant temperature, refluxed for 5 hours, separated from solid and liquid, washed with absolute ethanol, dried to obtain aluminum chlorosilicate fibers;

[0024] (3) Preparation of sulfamethoxazole modified aluminum silicate fiber adsorbent: In the reactor, add dilute hydrochloric acid: 780mL, sulfamethoxazole: 50g, stir and dissolve, add chlorinated aluminum silicate fiber: 160g , Z...

Embodiment 3

[0026] (1) Pretreatment of aluminum silicate fibers: put 50 g of aluminum silicate fibers with a particle size of 280-320 μm in 1000 mL of sodium carbonate solution with a concentration of 1.2% by mass, soak at room temperature for 6 h, separate solid and liquid, and use Ionic water washing to neutrality, drying to obtain pretreated aluminum silicate fibers;

[0027] (2) Preparation of chlorinated aluminum silicate fiber: In the reactor, add anhydrous ethanol: 81mL, 3-chloropropyltrimethoxysilane: 25g, mix well, add pretreated aluminum silicate fiber: 11g, , the temperature was raised to 65±2°C at a constant temperature, refluxed for 5 hours, separated from solid and liquid, washed with absolute ethanol, dried to obtain aluminum chlorosilicate fibers;

[0028] (3) Preparation of sulfamethoxazole modified aluminum silicate fiber adsorbent: In the reactor, add dilute hydrochloric acid: 82mL, sulfamethoxazole: 2g, stir and dissolve, add chloroaluminosilicate fiber: 17g , Zinc fl...

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PUM

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Abstract

The invention discloses a method for preparing sulfamethoxazole modified aluminum silicate fiber adsorbents. The method is characterized by comprising steps of carrying out surface chlorination on aluminum silicate fibers by 3-gamma-chloropropyl trimethoxysilane to obtain chlorinated aluminum silicate fibers; adding, by weight, 78-82% of diluted hydrochloric acid and 2-5% of sulfamethoxazole intoa reactor, stirring and dissolving the diluted hydrochloric acid and the sulfamethoxazole, adding, by weight, 14-18% of chlorinated aluminum silicate fibers and 0.2-1.0% of zinc sheets into the reactor, heating the reactor until the temperature of the reactor reaches 40+ / -2 DEG C, keeping the temperature of the reactor constant, carrying out stirring reaction for 3 h, separating solid from liquidafter the reaction is completely carried out and carrying out washing by the aid of deionized water, and carrying out drying to obtain the sulfamethoxazole modified aluminum silicate fiber adsorbents.The aluminum silicate fibers are used as frameworks of the sulfamethoxazole modified aluminum silicate fiber adsorbents. The sum of the percentages of components added into the reactor is one hundredpercent. The method has the advantages that perfluorooctanoic acid can be selectively adsorbed by the sulfamethoxazole modified aluminum silicate fiber adsorbents which are adsorption materials, andthe adsorption materials are excellent in mechanical performance, good in chemical stability, high in adsorption rate and easy to elute and have regeneration capacity.

Description

technical field [0001] The invention relates to a preparation method and application technology of an adsorption material, in particular to a preparation method and application of a sulfamethoxazole-modified aluminum silicate fiber adsorbent, and belongs to the technical field of separation material application. Background technique [0002] Perfluorooctanoic acid (PFOA), or "C8", is a synthetic chemical often used as an integral processing aid in the production of high-performance fluoropolymers. These high-performance fluoropolymers can be widely used in aerospace technology, transportation, electronics industry, and household products such as kitchen utensils (such as non-stick pans). Since the early 1980s, the application of this non-volatile perfluorinated organic compound in industrial and civil fields has grown rapidly. The extensive use of this type of product makes it enter various environmental media such as soil, water, and the atmosphere around the world in vari...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/14
Inventor 李慧芝裴梅山韩斌
Owner UNIV OF JINAN
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