Synthesis method of composite film for adsorbing Hg < 2 + > in wastewater

A composite film and synthesis method technology, applied in the direction of adsorption water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of limited adsorption membrane treatment effect, non-recyclable utilization, high operating cost, etc. Achieve the effect of low density, novel method and low cost

Active Publication Date: 2021-11-30
保定源汉升新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But currently used for Hg in wastewater 2+ The removal effect of the adsorption membrane is limited, it cannot be recycled, and the treatment time is long, and the operating cost is high. It takes about 1 hour in the reaction tank to achieve the removal effect

Method used

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  • Synthesis method of composite film for adsorbing Hg &lt; 2 + &gt; in wastewater
  • Synthesis method of composite film for adsorbing Hg &lt; 2 + &gt; in wastewater
  • Synthesis method of composite film for adsorbing Hg &lt; 2 + &gt; in wastewater

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preparation example Construction

[0030] The application discloses a method for adsorbing Hg in wastewater 2+ The synthetic method of composite thin film, it comprises: polyvinylidene fluoride / multi-walled carbon nanotube / polyethylene glycol composite base film, MXene hybrid Fe 2 o 3 Nano particle active layer, cellulose surface covering film. The composite film synthesized by this method has a very excellent effect of degrading organic pollutants.

[0031] The composite film disclosed in this application includes: polyvinylidene fluoride / multi-walled carbon nanotube / polyethylene glycol composite bottom film, MXene hybrid Fe 2 o 3 Nano particle active layer, cellulose surface covering film;

[0032] The polyvinylidene fluoride / multi-walled carbon nanotube / polyethylene glycol composite bottom film has a void structure,

[0033] The MXene hybrid Fe 2 o 3 The nanoparticle active layer has a layered structure, combined with the polyvinylidene fluoride / multi-walled carbon nanotube / polyethylene glycol composi...

Embodiment 1

[0064] The amount of active substance in the synthesis

[0065] MXene@Fe 2 o 3 Actual MXene content in hybrid nanoparticles: 1.65mg

[0066] MXene@Fe 2 o 3 Actual Fe in hybrid nanoparticles 2 o 3 Content: 63.36mg

[0067] Volume of surface covering cellulose dispersion: 1.5mL

[0068] Hg removal 2+ See Table 1 for wastewater conditions.

[0069] Table 1 Reaction Conditions

[0070] condition scope Film area 12.56cm 2

[0071] Under the above conditions to remove Hg 2+ Wastewater treatment can achieve 97-98% efficiency, and the flux is 32-33L / (h·m 2 bar).

Embodiment 2

[0073] The amount of active substance in the synthesis

[0074] MXene@Fe 2 o 3 Actual MXene content in hybrid nanoparticles: 2.20mg

[0075] MXene@Fe 2 o 3 Actual Fe in hybrid nanoparticles 2 o 3 Content: 63.36mg

[0076] Volume of surface covering cellulose dispersion: 1.5mL

[0077] Hg removal 2+ See Table 2 for wastewater conditions.

[0078] Table 2 Reaction Conditions

[0079] condition scope Film area 12.56cm 2

[0080] Under the above conditions to remove Hg 2+ Wastewater treatment can achieve 97% efficiency, and the flux is 16~17L / (h·m 2 bar).

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Abstract

The invention belongs to the technical field of wastewater purification, and particularly relates to a synthesis method of a composite film for adsorbing Hg < 2 + > in wastewater. The synthesis method of the composite film comprises the following steps of: adding multi-walled carbon nanotubes and polyethylene glycol into N-methyl pyrrolidone, carrying out ultrasonic stirring and hydrothermal treatment, adding polyvinylidene fluoride powder, and stirring to obtain a composite bottom film; carrying out ultrasonic stirring on a Ti3AlC2 powder HF solution, and carrying out centrifugal collection until the supernatant is neutral; dispersing a FeCl3 solution in the supernatant , and and carrying out ultrasonic dispersion, hot bathing, vacuum suction filtration, washing and drying to obtain MXene hybrid Fe2O3 nano powder; adding the powder into deionized water, performing ultrasonic dispersion, and performing vacuum filtration to the composite bottom film to form an active layer; and adding nano cellulose into deionized water, performing ultrasonic dispersion, and performing vacuum suction filtration on the upper part of the active layer to complete the preparation of the composite film.

Description

technical field [0001] The invention belongs to the technical field of wastewater purification, and more specifically, is a method for adsorbing Hg in wastewater. 2+ Synthesis of composite films. Background technique [0002] In recent years, with the continuous development of my country's industry, environmental issues have been increasingly studied. In order to fully implement the concept of sustainable environmental development, protect and strengthen the production and renewal capabilities of the environmental system. The biggest impact on the environment is the discharge of industrial wastewater. In view of this, my country has also promulgated regulations on water pollution control in recent years, such as "Water Law of the People's Republic of China", "Water Pollution Prevention and Control Law of the People's Republic of China", "Urban Sewage Treatment and Pollution Prevention Technology Policy" and other laws and regulations to control and treat wastewater discharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/10B01D69/12B01D69/02C02F1/28C02F101/20
CPCB01D67/0079B01D69/10B01D69/12B01D69/02C02F1/288B01D2325/12C02F2101/20
Inventor 郝润龙陈曦马昭王思媛罗益辰梁翰庭
Owner 保定源汉升新材料科技有限公司
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