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Preparation method of magnetic chalcogenide composite adsorbent

A composite adsorption, chalcogenide technology, applied in the directions of alkali metal compounds, chemical instruments and methods, adsorbed water/sewage treatment, etc., can solve the problem of difficult separation of adsorbents and water bodies, and achieve high magnetic properties, stable structure, and simple preparation process. Effect

Active Publication Date: 2018-07-03
NINGBO URBAN ENVIRONMENT OBSERVATION & RES STATION NUEORS CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the adsorbent is difficult to separate from the water body, the present invention provides a magnetic chalcogen composite adsorbent with fast magnetic separation and good adsorption performance, which improves the practicability of the adsorbent

Method used

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  • Preparation method of magnetic chalcogenide composite adsorbent
  • Preparation method of magnetic chalcogenide composite adsorbent
  • Preparation method of magnetic chalcogenide composite adsorbent

Examples

Experimental program
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Embodiment 1

[0021] (1) Chalcogen compound K 2x mn x sn 3-x S 6 Preparation of:

[0022] Chalcogen K 2x mn x sn 3-x S 6 Prepared by hydrothermal method, add Sn (28.83mmol), Mn (5.77mmol), K 2 CO 3 (11.53mmol), S (69mmol) and H 2 O (15mL), hydrothermal reaction in an oven at 180°C for 100h, after cooling to room temperature, water, CS 2and ethanol for several times, and finally dried in a vacuum oven at 60°C before use.

[0023] (2) Nano Fe 3 o 4 preparation

[0024] First, 1.35g of FeCl 3 ·6H 2 O and 40mL ethylene glycol were mixed and stirred into a homogeneous liquid, then 1g polyethylene glycol and 3.6g ammonium acetate were added, then fully stirred and mixed, then transferred to a 75mL reaction kettle, reacted at 180°C for 22h, and finally mixed with absolute ethanol and After washing with water, dry naturally overnight.

[0025] (3) Preparation of magnetic chalcogen composite adsorbent

[0026] 0.45g Fe 3 o 4 Mix with 120mL ethanol in a 250mL three-necked flask, s...

Embodiment 2

[0028] (1) Chalcogen compound K 2x mn x sn 3-x S 6 Preparation of:

[0029] Chalcogen K 2x mn x sn 3-x S 6 Prepared by hydrothermal method, add Sn (23mmol), Mn (11.53mmol), K 2 CO 3 (11.53mmol), S (69mmol) and H 2 O (15mL), hydrothermal reaction in an oven at 190°C for 96h, after cooling to room temperature, water, CS 2 and ethanol for several times, and finally dried in a vacuum oven at 60°C before use.

[0030] (2) Nano Fe 3 o 4 preparation

[0031] First, 1.5g of FeCl 3 ·6H 2 O and 80mL of ethylene glycol were mixed and stirred to form a homogeneous liquid, then 1g of polyethylene glycol and 4g of ammonium acetate were added, then fully stirred and mixed, then transferred to an 80mL reaction kettle, reacted at 200°C for 20h, and finally mixed with absolute ethanol and water Let dry overnight after washing.

[0032] (3) Preparation of magnetic chalcogen composite adsorbent

[0033] 0.225g Fe 3 o 4 Mix with 120mL ethanol in a 250mL three-necked flask, stir...

Embodiment 3

[0035] (1) Chalcogen compound K 2x mn x sn 3-x S 6 Preparation of:

[0036] Chalcogen K 2x mn x sn 3-x S 6 Prepared by hydrothermal method, add Sn (23.6mmol), Mn (10.9mmol), K 2 CO 3 (21.9mmol), S (69mmol) and H 2 O (15mL), hydrothermally reacted in an oven at 200°C for 94h, after cooling to room temperature, water, CS 2 and ethanol for several times, and finally dried in a vacuum oven at 60°C before use.

[0037] (2) Nano Fe 3 o 4 preparation

[0038] First, 2.8g of FeCl 3 ·6H 2 O and 80mL ethylene glycol were mixed and stirred into a homogeneous liquid, then 2g polyethylene glycol and 6.4g ammonium acetate were added, then fully stirred and mixed, then transferred to a 150mL reaction kettle, reacted at 210°C for 18h, and finally mixed with absolute ethanol and After washing with water, dry naturally overnight.

[0039] (3) Preparation of magnetic chalcogen composite adsorbent

[0040] 0.18g Fe 3 o 4 Mix with 120mL ethanol in a 250mL three-necked flask, st...

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Abstract

The invention relates to a preparation method of a magnetic chalcogenide composite adsorbent, belonging to the field of environmental protection. The preparation method comprises the steps of dispersing nano-Fe3O4 particles into an ethanol solution, mechanically stirring for 10-14 hours, adding K2xMnxSn3-xS6, continuing to stir for 20-24 hours, carrying out magnetic separation, and drying, so as to obtain the magnetic chalcogenide composite adsorbent. The composite adsorbent simultaneously has magnetic separation capacity and adsorptive property. By simulating adsorption experiments of copperions, lead ions and cadmium ions in wastewater through the magnetic chalcogenide composite adsorbent, the theoretical adsorption amounts of copper ions, lead ions and cadmium ions are respectively 92.7mg / g-126.5mg / g, 196.1mg / g-262.3mg / g and 188.6mg / g-264.2mg / g, and the saturation magnetization strengths of copper ions, lead ions and cadmium ions after adsorption are respectively 15.6emu / g-77.2emu / g, 14.7emu / g-75.1emu / g and 14.6emu / g-76.2emu / g.

Description

technical field [0001] The invention relates to an adsorbent, in particular to a preparation method of a magnetic chalcogen composite adsorbent, which belongs to the field of environmental protection. Background technique [0002] With the rapid development of industrial production, heavy metal pollution in water is becoming more and more serious. Unlike organic pollutants, heavy metals cannot be biodegraded and easily accumulate in aquatic organisms, and endanger human health through the food chain. Therefore, the treatment of heavy metal wastewater is related to the health of the water environment and human health. At present, the main heavy metal wastewater treatment methods include ion exchange method, adsorption method, chemical precipitation method, membrane filtration method, biological method and so on. Among them, the adsorption method has the advantages of low cost, good treatment effect, and simple operation, and is currently recognized as an effective method for...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/30B01J20/28C02F1/28C02F101/20
CPCB01J20/06B01J20/28009B01J2220/42B01J2220/4806C02F1/281C02F2101/20
Inventor 李建荣肖航
Owner NINGBO URBAN ENVIRONMENT OBSERVATION & RES STATION NUEORS CHINESE ACADEMY OF SCI