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Preparation method of hexamethylenetetramine-modified glass fiber adsorbent

A technology of hexamethylenetetramine and glass fiber, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxide/hydroxide, etc., can solve problems such as degradation, and achieve strong adsorption capacity and adsorption Simple operation and high porosity effect

Inactive Publication Date: 2018-10-02
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) Glass fiber pretreatment: Put 20g of glass fiber with a length between 2 and 10mm into 280mL of octylphenol polyoxyethylene ether solution with a mass percent concentration of 2.0%, stir at room temperature for 2 hours, and separate solid and liquid. Wash with deionized water to neutrality and dry to obtain pretreated glass fiber;

[0019] (2) Chloropropyltriethoxysilane modified glass fiber preparation: In the reactor, add absolute ethanol: 74mL, chloropropyltriethoxysilane: 28g, mix well, add pretreated glass fiber: 14g, the temperature was raised to 58±2°C and kept at a constant temperature, refluxed for 5 hours, separated from solid and liquid, washed with absolute ethanol, dried to obtain chloropropyltriethoxysilane modified glass fiber;

[0020] (3) Preparation of hexamethylenetetramine modified glass fiber adsorbent: In the reactor, add deionized water: 76mL, hexamethylenetetramine: 10g, stir to dissolve, add chloropropyl triethyl Oxysilane-modified glass fi...

Embodiment 2

[0022] (1) Glass fiber pretreatment: Put 40g of glass fiber with a length between 2 and 10mm into 600mL of octylphenol polyoxyethylene ether solution with a mass percent concentration of 2.5%, stir at room temperature for 2 hours, and separate solid and liquid. Wash with deionized water to neutrality and dry to obtain pretreated glass fiber;

[0023] (2) Chloropropyltriethoxysilane modified glass fiber preparation: In the reactor, add absolute ethanol: 72mL, chloropropyltriethoxysilane: 27g, mix well, add pretreated glass fiber: 16g, the temperature was raised to 58±2°C and kept at a constant temperature, refluxed for 5 hours, separated from solid and liquid, washed with absolute ethanol, dried to obtain chloropropyltriethoxysilane modified glass fiber;

[0024] (3) Preparation of hexamethylenetetramine modified glass fiber adsorbent: In the reactor, add deionized water: 75mL, hexamethylenetetramine: 12g, stir to dissolve, add chloropropyl triethyl Oxysilane-modified glass fi...

Embodiment 3

[0026] (1) Glass fiber pretreatment: Put 50g of glass fiber with a length between 2 and 10mm into 580mL of octylphenol polyoxyethylene ether solution with a mass percent concentration of 1.5%, stir at room temperature for 2 hours, and separate solid and liquid. Wash with deionized water to neutrality and dry to obtain pretreated glass fiber;

[0027] (2) Chloropropyltriethoxysilane modified glass fiber preparation: In the reactor, add absolute ethanol: 76mL, chloropropyltriethoxysilane: 28g, mix well, add pretreated glass fiber: 12g, the temperature was raised to 58±2°C and kept at a constant temperature, refluxed for 5 hours, separated from solid and liquid, washed with absolute ethanol, dried to obtain chloropropyltriethoxysilane modified glass fiber;

[0028] (3) Preparation of hexamethylenetetramine modified glass fiber adsorbent: In the reactor, add deionized water: 78mL, hexamethylenetetramine: 8g, stir to dissolve, add chloropropyl triethyl Oxysilane-modified glass fib...

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Abstract

The invention discloses a preparation method of a hexamethylenetetramine-modified glass fiber adsorbent, and is characterized in that: firstly, pretreating a glass fiber by adopting an octylphenol polyoxyethylene ether solution to obtain a pretreated glass fiber; then modifying the glass fiber with chloropropyl-triethoxysilane to obtain a chloropropyl-triethoxysilane-modified glass fiber; then adding the following components into a reactor by weight percentage: 74-78% of deionized water and 8-12% of hexamethylene tetraamine, stirring for dissolving, adding 12-16% of the chloropropyl-triethoxysilane to modify the glass fiber, wherein the sum of the weight percentages of each component is 100%; stirring and allowing a reaction for 6h at room temperature, performing solid-liquid separation after reaction ending, washing with the deionized water, and drying to obtain the hexamethylenetetramine-modified glass fiber adsorbent. The adsorbent has selective adsorption to perfluorooctanoic acid,and is good in mechanical properties, good in chemical stability, high in adsorption speed, easy to elute, and endowed with regeneration capability.

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 hexamethylenetetramine modified glass fiber adsorbent, and belongs to the technical field of separation material application. Background technique [0002] The main components of glass fiber are silica, alumina, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc. According to the alkali content in the glass, it can be divided into alkali-free glass fiber (sodium oxide 0% ~ 2%, aluminoborosilicate glass), medium-alkali glass fiber (8% to 12% sodium oxide, boron-containing or boron-free soda-lime silicate glass) and high-alkali glass fiber (more than 13% sodium oxide, which is Soda-lime silicate glass. Glass fiber is an inorganic non-metallic material with excellent performance. Poor abrasiveness. It is made of glass balls or waste glass through high-temperature melting, drawing, windi...

Claims

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Application Information

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