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Preparation method and application of general magnetic adsorbent

A magnetic adsorbent and mineralizer technology, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve problems such as complex operation, multiple sets, and poor economy

Active Publication Date: 2018-08-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, printing and dyeing sewage (especially the dyeing of blended fibers) is usually a mixture of various dyes, and each dye needs to be treated separately with different processes, requiring multiple sets of sewage treatment equipment, and the operation is complicated and economical.

Method used

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  • Preparation method and application of general magnetic adsorbent
  • Preparation method and application of general magnetic adsorbent
  • Preparation method and application of general magnetic adsorbent

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0051] Weigh 0.946g FeCl 3 ·6H 2 O and 0.346g MnCl 2 4H 2 O was dissolved in 18mL of ethylene glycol and 2mL of absolute ethanol, stirred evenly by magnetic force to form a clear solution, which was designated as solution A. Weigh 1.8g NaAc and add it to the above solution, stir magnetically to form a homogeneous solution and call it solution B, then weigh 0.4g NaAc 3 Cit·2H 2 O and 0.2 g D-Glucose were added to solution B, heated to 60 °C and magnetically stirred to form a homogeneous solution C. Finally, 20 mL of the obtained solution was poured into a 25 mL hydrothermal kettle lined with polytetrafluoroethylene, and reacted at 200° C. for 12 h. Centrifuge, wash and dry the reaction mixture for 6 hours under vacuum at 70°C to obtain MnFe 2 o 4 / C composite material sample 1-1. Under the protection of nitrogen, the heating rate is 5°C / min, keep at 450°C for 1.5h, and cool naturally to obtain MnFe that can be used for adsorption 2 o 4 / C Composite.

preparation Embodiment 2

[0053] Weigh 0.946g FeCl 3 ·6H 2 O and 0.416g CoCl 2 4H 2 O was dissolved in 20 mL of ethylene glycol, stirred evenly by magnetic force to form a clear solution, which was designated as solution A. Weigh 1.8g NaAc and add it to the above solution, stir magnetically to form a homogeneous solution and call it solution B, then weigh 0.5g NaAc 3 Cit·2H 2 O and 0.180g D-Glucose were added to solution B, heated to 70°C and magnetically stirred to form a homogeneous solution C. Finally, the obtained solution was poured into a 30 mL hydrothermal kettle lined with polytetrafluoroethylene, and reacted at 200° C. for 16 h. Centrifuge, wash and dry the reaction mixture at 60°C for 12 hours under vacuum conditions to obtain CoFe 2 o4 / C composite material sample 2-1. Under the protection of nitrogen, the heating rate is 8°C / min, and the temperature is maintained at 500°C for 1 hour, and natural cooling is used to obtain CoFe that can be used for adsorption. 2 o 4 / C composite, des...

preparation Embodiment 3

[0055] Weigh 0.946g FeCl 3 ·6H 2 O and 0.238g ZnCl 2 Dissolve in 18mL of ethylene glycol and 2mL of diethylene glycol mixture, and magnetically stir evenly to form a clear solution, which is designated as solution A. Weigh 1.8g NaAc and add it to the above solution, stir magnetically to form a homogeneous solution and call it solution B, then weigh 0.5g NaAc 3 Cit·2H 2 O, 0.2g D-Glucose and 0.1g starch were added to solution B, heated to 70°C and magnetically stirred to form a homogeneous solution C. Finally, the obtained solution was poured into a 25 mL hydrothermal kettle lined with polytetrafluoroethylene, and reacted at 200° C. for 14 h. Centrifuge, wash and dry the reaction mixture for 6 hours at 80°C under vacuum to obtain ZnFe 2 o 4 / C composite material sample 3-1. Under the protection of argon, the heating rate is 10°C / min, and the temperature is kept at 600°C for 1h, and the ZnFe that can be used for adsorption is obtained by natural cooling. 2 o 4 / C compos...

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Abstract

The invention relates to a preparation method and an application of a universal magnetic adsorbent, belongs to the field of preparation of magnetic porous nanocomposite materials, and concretely relates to a carbon and magnetic spinel ferrite MFe2O4 hybrid nanocomposite MFe2O4 / C synthesized by adopting a solvothermal method, and its application as a dye sewage treatment adsorbent after being calcined. The adsorbent has a good adsorption performance on a cationic dye and an anionic dye in a wide solution pH range of (3.0-11.0), can be quickly separated from an aqueous solution under the actionof an external magnetic field, and is convenient, fast, economical and efficient.

Description

technical field [0001] The invention belongs to the field of preparation of magnetic porous nanocomposite materials, and relates to a magnetic spinel type ferrite MFe 2 o 4 Hybridization with Carbon to Form Mesoporous Layered Structure Nanocomposite MFe 2 o 4 The preparation method of / C, and its application as dye sewage treatment adsorbent after calcining treatment. Specifically: the invention provides a metal oxide MFe of a general magnetic adsorbent 2 o 4 (M is one or more of divalent Fe, Zn, Co, Mn, Mg, Cu, Ni, Cd, the molar ratio of the total number of divalent M ions to the number of trivalent Fe ions is close to 1:2, and will not be repeated later ) and carbonaceous hybrid nanocomposite MFe 2 o 4 / C preparation and its application as sewage treatment. Background technique [0002] Water pollution is one of the most serious environmental problems facing mankind at present. Dye wastewater has always been an important issue because of its complex composition, hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/20C02F1/28C02F101/30C02F101/34C02F101/38
CPCB01J20/06B01J20/20B01J20/28009B01J2220/4806B01J2220/4812C02F1/281C02F1/283C02F2101/308C02F2101/34C02F2101/38C02F2101/40
Inventor 张伟董地理贺平吴承伟
Owner DALIAN UNIV OF TECH
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