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Preparing method of magnetic carbon composite adsorption material

A technology of composite adsorbent material and magnetic material, applied in the field of composite material technology and water treatment, can solve the problem that adsorbent is not easy to recover, and achieve the effects of good recycling performance, many recycling times, and cheap and easy-to-obtain raw materials

Inactive Publication Date: 2017-07-07
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a magnetic carbon composite adsorption material with low cost, high absorption efficiency, good adsorption performance and good recyclability for the shortcomings of conventional adsorbents that are not easy to recycle.

Method used

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  • Preparing method of magnetic carbon composite adsorption material
  • Preparing method of magnetic carbon composite adsorption material
  • Preparing method of magnetic carbon composite adsorption material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Add 10g of ammonium polyphosphate to 300mL of tetrahydrofuran and mix evenly; then ultrasonically disperse 10g of graphite powder into it to obtain a mixed suspension; dissolve 0.6g of ferric sulfate in 200mL of tetrahydrofuran and add it to the above-mentioned The mixed suspension was obtained, heated to 80°C and stirred for 8 hours, then suction filtered, and the obtained mixture was first dried in an oven for 12 hours to obtain a mixture powder; then the mixture powder was placed in a tube furnace, and treated at 600°C under the protection of argon 6 hours (heating rate: 5°C / min), then fully ground and sieved with 200 mesh to obtain 20.6g magnetic carbon composite adsorption material. The removal rate of methylene blue by this adsorbent material can reach about 92% for the first time, and the removal rate remains above 50% after repeated use for 15 times.

Embodiment 2

[0037] Add 2g of urea into 100mL of methanol and mix evenly, then ultrasonically disperse 8g of activated carbon into it to obtain a mixed suspension; dissolve 10g of cobalt chloride into 100mL of methanol and add it to the above mixing In the suspension, heat to 30°C and stir for 8 hours, filter with suction, and dry the mixture in an oven for 8 hours, then place it in a tube furnace, and treat it at 1000°C for 6 hours under the protection of nitrogen (the heating rate is 20°C / min), After that, it was fully ground and sieved with 100 mesh to obtain 20 g of magnetic carbon composite adsorption material. The adsorption material can remove about 95% of the acid blue for the first time, and the removal rate remains above 45% after repeated use for 15 times.

Embodiment 3

[0039] Add 5g of bipyridinium ammonium into 100mL of hot water and mix evenly; then ultrasonically disperse 8g of carbon nanotubes into it to obtain a mixed suspension; put 10g of magnetic CeCo 3 Disperse in 100mL of water and add it to the above mixed suspension under ultrasonic conditions; heat to 70°C and stir for 5 hours, filter with suction, and dry the obtained mixture in an oven for 5 hours, then place it in a tube furnace under nitrogen protection Treat at 500°C for 4 hours (heating rate: 1°C / min), then fully grind, and sieve through 150 mesh to obtain 16g of magnetic carbon composite adsorption material. The adsorption material can remove about 90% of the acid blue for the first time, and the removal rate remains above 50% after repeated use for 12 times.

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Abstract

The invention provides a preparing method of a magnetic carbon composite adsorption material. A substance containing nitrogen and a carbon material are subjected to ultrasonic dispersion into a solvent to obtain a mixed suspension liquid, a magnetic material precursor is added into the suspension liquid, the mixture is heated to 30-120 DEG C after being subjected to full dispersion under an ultrasonic condition, the mixture is stirred for 1-8 h, and separation and drying are conducted to obtain mixture powder; then the mixture powder is fully grinded after being treated at high temperature of 120-900 DEG C for 0.5-8 h under the protection of inert gases, and the mixture powder is screened through a 20-300 mesh screen, so that the magnetic carbon composite adsorption material is obtained. The magnetic carbon composite adsorption material prepared through the method has the advantages of being low in cost, good in adsorption performance, high in adsorption efficiency, high in recyclable utilization frequency and the like, is short in consumption time in wastewater treatment and extremely easy to precipitate after being dispersed in water, and can be repeatedly used through simple treatment after being recycled, moreover, the adsorption performance is not drastically lowered, and thus the method has very high economic value in wastewater treatment.

Description

technical field [0001] The invention relates to an adsorbent for dye wastewater treatment, in particular to the preparation of a reusable magnetic carbon composite adsorption material, which belongs to the technical field of composite materials and water treatment. Background technique [0002] After entering the 21st century, with the continuous development of industry, the problem of water pollution has become increasingly serious. The pollution of heavy metal phenols and residual dyes in wastewater is particularly prominent in the process of industrialization. Sewage treatment by adsorption technology is one of the commonly used technologies for environmental pollution control. Adsorbents can easily, safely and efficiently absorb impurities and harmful substances in wastewater. At present, the most commonly used adsorbents are activated carbon, molecular sieve, etc., but they have a long suspension time in wastewater and are not easy to settle, which leads to the disadvan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28
CPCB01J20/0207B01J20/0225B01J20/0229B01J20/20B01J20/205B01J20/28009B01J20/28059C02F1/28C02F1/281C02F1/283
Inventor 任宗礼王伟荆王莉王博
Owner LANZHOU JIAOTONG UNIV
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