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Adsorbent for removing antimony in printing and dyeing wastewater and preparation method and application thereof

A printing and dyeing wastewater, adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc., can solve the problems of increasing wastewater treatment costs, poor recycling performance, etc. The effect of improving hydrophilicity and improving adsorption capacity

Active Publication Date: 2020-12-25
HANGZHOU FUYANG WEIWEN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the maximum adsorption capacity of the adsorbent still has a lot of room for improvement, and the recycling performance is relatively poor, which undoubtedly increases the cost of wastewater treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing an adsorbent for removing antimony in printing and dyeing wastewater. First, titanium nitrate and cerium nitrate are used as raw materials to prepare metal oxides; then polyacrylonitrile fibers are used as raw materials to prepare amidoximated polyacrylonitrile; finally, propylene Amide and N-(4-aminophenyl) acrylamide are used as raw materials for polymerization reaction. During the polymerization process, metal oxides and amidoximated polyacrylonitrile fibers are added to obtain hydrogel. After post-treatment, xerogel is obtained. Property treatment, obtains described adsorbent; Wherein, the concrete method of modification treatment is as follows:

[0036] (A) Ultrasonic oscillation of 1-ethyl-3-methylimidazolium hexafluorophosphate and 1-butyl-3-methylimidazolium chloride was performed to obtain modifiers;

[0037] (B) Then add the dry gel to the modifier, under nitrogen protection, add methanol aqueous solution with a mass concentration of 50%, ...

Embodiment 2

[0049] A method for preparing an adsorbent for removing antimony in printing and dyeing wastewater. First, titanium nitrate and cerium nitrate are used as raw materials to prepare metal oxides; then polyacrylonitrile fibers are used as raw materials to prepare amidoximated polyacrylonitrile; finally, propylene Amide and N-(4-aminophenyl) acrylamide are used as raw materials for polymerization reaction. During the polymerization process, metal oxides and amidoximated polyacrylonitrile fibers are added to obtain hydrogel. After post-treatment, xerogel is obtained. Property treatment, obtains described adsorbent; Wherein, the concrete method of modification treatment is as follows:

[0050] (A) Ultrasonic oscillation of 1-ethyl-3-methylimidazolium hexafluorophosphate and 1-butyl-3-methylimidazolium chloride was performed to obtain modifiers;

[0051] (B) Then add the dry gel to the modifier, under nitrogen protection, add methanol aqueous solution with a mass concentration of 60%...

Embodiment 3

[0063] A method for preparing an adsorbent for removing antimony in printing and dyeing wastewater. First, titanium nitrate and cerium nitrate are used as raw materials to prepare metal oxides; then polyacrylonitrile fibers are used as raw materials to prepare amidoximated polyacrylonitrile; finally, propylene Amide and N-(4-aminophenyl) acrylamide are used as raw materials for polymerization reaction. During the polymerization process, metal oxides and amidoximated polyacrylonitrile fibers are added to obtain hydrogel. After post-treatment, xerogel is obtained. Property treatment, obtains described adsorbent; Wherein, the concrete method of modification treatment is as follows:

[0064] (A) Ultrasonic oscillation of 1-ethyl-3-methylimidazolium hexafluorophosphate and 1-butyl-3-methylimidazolium chloride was performed to obtain modifiers;

[0065] (B) Then add the dry gel to the modifier, under nitrogen protection, add methanol aqueous solution with a mass concentration of 55%...

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PUM

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Abstract

The invention provides an adsorbent for removing antimony in printing and dyeing wastewater and a preparation method and application thereof. The preparation method comprises the following steps: preparing a metal oxide by taking titanium nitrate and cerium nitrate as raw materials; then preparing amidoximation polyacrylonitrile by taking polyacrylonitrile fiber as a raw material; finally, takingacrylamide and N (4aminophenyl) acrylamide as raw materials for a polymerization reaction, adding metal oxide and amidoximation polyacrylonitrile fiber in the polymerization process, obtaining hydrogel, obtaining dry gel through aftertreatment, carrying out modification treatment, and obtaining the adsorbent, wherein the maximum adsorption capacity of the adsorbent on antimony in the printing anddyeing wastewater is high, and excellent cyclic utilization performance of the adsorbent is achieved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an adsorbent for removing antimony in printing and dyeing wastewater, a preparation method and an application. Background technique [0002] Antimony metal and its compounds are widely used in flame retardants, alloys, ceramics, pigments and synthetic fibers. With the increase of antimony consumption, antimony pollution has attracted more and more attention in recent years. Antimony is a toxic and harmful element. Antimony is listed as hazardous waste in the Basel Convention. It has strong biological toxicity (carcinogenic, teratogenic, mutagenic) to organisms. Combined, destroy tissue metabolism, damage the heart, liver, kidney and nervous system. In the natural environment, antimony mainly exists in the form of trivalent Sb(III) and pentavalent Sb(V). Sb(III) can be adsorbed and oxidized to Sb(V) by oxidants in natural water bodies or their sediments, so in the ...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/10
CPCB01J20/06B01J20/267B01J20/28047C02F1/281C02F1/285C02F2101/10
Inventor 董晓明
Owner HANGZHOU FUYANG WEIWEN ENVIRONMENTAL PROTECTION TECH CO LTD
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