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A kind of preparation method of modified porous magnetic loofah composite microsphere

A composite microsphere and loofah technology, applied in the field of materials, can solve the problems of difficult solid-liquid separation of adsorbents, hinder the progress of adsorption technology, etc., and achieve the effects of easy industrial production, good adsorption selection, and fast speed.

Inactive Publication Date: 2019-02-22
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, there are many shortcomings in the adsorption method. Among them, the difficulty of solid-liquid separation of the adsorbent has always been a major problem hindering the progress of adsorption technology. Therefore, in recent years, many scholars have devoted themselves to the study of magnetic adsorbents and applied them to water pollution. substance removal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Pretreatment of loofah: in the reactor, add separately, 5mol / LH 2 SO 4 :83 mL, ammonium persulfate: 6g, mix well, then add loofah powder: 11g, soak at room temperature for 12 h, then boil for 15 min, after cooling, wash with deionized water to neutrality, separate solid and liquid, put the solid in 240 mL contains 1.5% NaOH, 1.5% Na by mass and volume percentage 2 SiO 3 , 0.6% sodium sulfite in a mixed aqueous solution, react at a constant temperature of 100°C in a water bath for 100 minutes, cool to room temperature, separate solid and liquid, wash with water until neutral, and dry to obtain pretreated loofah;

[0026] (2) Preparation of porous magnetic loofah composite microspheres: In an autoclave lined with polytetrafluoroethylene, add, respectively, 1-ethyl-3 methylimidazole diethyl phosphate salt: 63g, pretreated loofah :12g, sealed, the temperature rises to 150℃ constant temperature, constant temperature reaction for 6 hours, take out and cool to room temperature...

Embodiment 2

[0030] (1) Pretreatment of loofah: in the reactor, add separately, 5mol / LH 2 SO 4 :80 mL, ammonium persulfate: 5g, mix well, then add loofah powder: 15g, soak at room temperature for 12 h, then boil for 15 min, after cooling, wash with deionized water until neutral, separate solid and liquid, put the solid in 300 mL contains 1.5% NaOH, 1.5% Na by mass and volume percentage 2 SiO 3 , 0.6% sodium sulfite in a mixed aqueous solution, react at a constant temperature of 100°C in a water bath for 100 minutes, cool to room temperature, separate solid and liquid, wash with water until neutral, and dry to obtain pretreated loofah;

[0031] (2) Preparation of porous magnetic loofah composite microspheres: In an autoclave lined with polytetrafluoroethylene, add, respectively, 1-ethyl-3 methylimidazole diethyl phosphate salt: 60g, pretreated loofah :15g, sealed, the temperature rises to 150℃ constant temperature, constant temperature reaction for 6 hours, take out and cool to room temperature...

Embodiment 3

[0035] (1) Pretreatment of loofah: in the reactor, add separately, 5mol / LH 2 SO 4 :81 mL, ammonium persulfate: 7g, mix well, add 12g loofah powder: 12g, soak at room temperature for 12 hours, then boil for 15min, after cooling, wash with deionized water to neutrality, separate solid and liquid, put the solid in 250 mL contains 1.5% NaOH, 1.5% Na by mass and volume percentage 2 SiO 3 , 0.6% sodium sulfite in a mixed aqueous solution, react at a constant temperature of 100°C in a water bath for 100 minutes, cool to room temperature, separate solid and liquid, wash with water until neutral, and dry to obtain pretreated loofah;

[0036] (2) Preparation of porous magnetic loofah composite microspheres: In an autoclave lined with polytetrafluoroethylene, add, respectively, 1-ethyl-3 methylimidazole diethyl phosphate salt: 65g, pretreated loofah :10g, sealed, temperature rise to 150℃ constant temperature, constant temperature reaction for 6 hours, take out and cool to room temperature, a...

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Abstract

The invention discloses a preparation method of a modified porous magnetic loofah sponge composite microsphere. The preparation method is characterized by comprising the following steps: firstly, dissolving loofah sponge powder in mixed ion liquid, and adding nano ferroferric oxide to prepare porous magnetic loofah sponge composite microspheres; then aminating the surfaces of the porous magnetic loofah sponge composite microspheres to obtain aminated porous magnetic loofah sponge composite microspheres; and finally adding the following components into a reactor in percentage concentration by mass: 73-78% of deionized water and 8-12% of DMPS, stirring and dissolving, 12-18% of aminated porous magnetic loofah sponge composite microspheres, stirring at the constant temperature of 80+ / -2 DEG C, performing reflux reaction for 2h, cooling and then washing with methanol, performing solid-liquid separation, and drying to obtain the modified porous magnetic loofah sponge composite microspheres. An adsorbent has high adsorption capacity on arsenic, thus not only being low in cost, but also is green and environment-friendly; and the adsorbent also has magnetism, is high in mechanical strength, can be repeatedly used for more than ten times, and the adsorbent is easily separated.

Description

Technical field [0001] The invention relates to a preparation method of a biomagnetic adsorbent, in particular to a preparation method of modified porous magnetic loofah complex microspheres and application technology for arsenic adsorption and separation, belonging to the field of materials. Background technique [0002] Arsenic pollution refers to environmental pollution caused by arsenic or its compounds. The mining and smelting of arsenic and arsenic-containing metals, the production of arsenic or arsenic compounds as raw materials, the production of glass, pigments, technical materials, paper, and the combustion of coal can all produce arsenic-containing waste water, waste gas and waste residues, which will pollute the environment. . In addition to natural causes such as rock weathering and volcanic eruptions, atmospheric arsenic pollution mainly comes from industrial production, the use of arsenic pesticides, and the burning of coal. Arsenic-containing wastewater, pestici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/10
CPCB01J20/24B01J20/28009B01J20/28021C02F1/286C02F2101/103
Inventor 李慧芝翟玉博周英杰
Owner UNIV OF JINAN