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Preparation of Acrylic Acid/Polyvinylpyrrolidone/Palygorskite Composite Adsorbent Material

A technology of polyvinylpyrrolidone and composite adsorption materials, which is applied in the direction of adsorption of water/sewage treatment, alkali metal compounds, alkali metal oxides/hydroxides, etc., and can solve water environmental pollution, high toxicity, biodegradation and decolorization difficulties, etc. problems, to achieve the effect of improving the adsorption performance and increasing the interstitial aggregation of molecules

Inactive Publication Date: 2016-08-24
江苏尚励环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Dye water has caused serious pollution to the water environment due to its high chroma, high toxicity, and difficulty in biodegradation and decolorization. Therefore, the treatment of printing and dyeing wastewater has always been a difficult point in water treatment.

Method used

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  • Preparation of Acrylic Acid/Polyvinylpyrrolidone/Palygorskite Composite Adsorbent Material
  • Preparation of Acrylic Acid/Polyvinylpyrrolidone/Palygorskite Composite Adsorbent Material
  • Preparation of Acrylic Acid/Polyvinylpyrrolidone/Palygorskite Composite Adsorbent Material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Modification of palygorskite clay: Take 161g of palygorskite clay raw ore and add it to a 1000 mL beaker, add water to 600mL, stir mechanically (1000 rpm) for 8h, dilute the suspension with water, and pour the upper layer after standing for a period of time For the clear liquid and the bottom sand layer, wash the mud suspension in the middle layer three times, dry, crush, acidify and wash with 1 M hydrochloric acid to neutrality, then dry and crush, and pass through a 200-mesh sieve to obtain acidified modified palysine Stone clay (PGS), spare.

[0027] (2) Preparation of acrylic acid / polyvinylpyrrolidone / palygorskite clay composite adsorption material: Weigh 7.2g of AA and 20mL of distilled water into a three-necked flask, stir mechanically at room temperature for half an hour, then add 1.6 Adjust the neutralization degree to 40% with gNaOH, and stir for 30 min, add 7.2g of modified PGS, continue to stir for 10 min, then add 7.2g of PVP and 0.72g of MBA, raise the ...

Embodiment 2

[0030] (1) Modification of palygorskite clay: Take 161g of palygorskite clay raw ore and add it to a 1000 mL beaker, add water to 600mL, stir mechanically (1000 rpm) for 8h, dilute the suspension with water, and pour the upper layer after standing for a period of time For the clear liquid and the bottom sand layer, wash the mud suspension in the middle layer three times, dry, crush, acidify and wash with 1 M hydrochloric acid to neutrality, then dry and crush, and pass through a 200-mesh sieve to obtain acidified modified palysine Stone clay (PGS), spare.

[0031] (2) Preparation of acrylic acid / polyvinylpyrrolidone / palygorskite clay composite adsorption material: Weigh 7.2g of AA and 20mL of distilled water into a three-necked flask, stir mechanically at room temperature for half an hour, then add 3.6 Adjust the neutralization degree to 90% with gNaOH, and stir for 30 min, add 36g of modified PGS, continue to stir for 10 min, then add 1.2g of PVP and 0.12g of MBA, raise the t...

Embodiment 3

[0034] (1) Modification of palygorskite clay: Take 161g of palygorskite clay raw ore and add it to a 1000 mL beaker, add water to 600mL, stir mechanically (1000 rpm) for 8h, dilute the suspension with water, and pour the upper layer after standing for a period of time For the clear liquid and the bottom sand layer, wash the mud suspension in the middle layer three times, dry, crush, acidify and wash with 1 M hydrochloric acid to neutrality, then dry and crush, and pass through a 200-mesh sieve to obtain acidified modified palysine Stone clay (PGS), spare.

[0035] (2) Preparation of acrylic acid / polyvinylpyrrolidone / palygorskite clay composite adsorption material: Weigh 7.2g of AA and 20mL of distilled water into a three-necked flask, stir mechanically at room temperature for half an hour, then add 2.4 Adjust the neutralization degree to 60% with gNaOH, and stir for 30 min, add 12.0g of modified PGS, continue to stir for 10 min, then add 2.4g of PVP and 0.36g of MBA, raise the...

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Abstract

The invention provides a preparation method of acrylic acid / polyvinylpyrrolidone / palygorskite clay composite adsorption material, which uses acrylic acid, polyvinylpyrrolidone and palygorskite clay as raw materials, and N,N'-methylenebisacrylamide As a crosslinking agent, potassium persulfate is used as an initiator, and a composite material with a network interpenetrating structure is obtained through free radical polymerization. Due to the introduction of polyvinylpyrrolidone and palygorskite clay, the special structure of the palygorskite clay surface can adjust the three-dimensional network structure of the polymer, increase the adsorption sites of the three-dimensional network structure of the composite material, and increase the molecular weight of the polymer. Interstitial polymerization, thereby improving the adsorption performance of the polymer to cationic dyes. Experiments show that the adsorption capacity of the composite adsorption material prepared by the invention to the cationic dye methylene blue is 1700mg / g-1980mg / g, and the removal rate is 85%-99%.

Description

technical field [0001] The invention belongs to the field of fine chemical industry and relates to the preparation of a composite adsorption material, in particular to the preparation of an acrylic acid / polyvinylpyrrolidone / palygorskite clay composite adsorption material. Background technique [0002] Dye water has caused serious pollution to the water environment due to its high chroma, high toxicity, and difficulty in biodegradation and decolorization. Therefore, the treatment of printing and dyeing wastewater has always been a difficult point in water treatment. At present, the treatment methods for dye wastewater mainly include membrane filtration method, precipitation method, coagulation method, electrochemical method, ion exchange method, chemical oxidation and adsorption method. The adsorption method is simple and easy to operate because it does not introduce new pollutants. It is widely used in the adsorption treatment of wastewater due to its low energy consumption ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28
Inventor 张哲王小亮杨彩霞雷蕾罗鑫圣周鹏鑫李豫陇雷自强
Owner 江苏尚励环境工程有限公司
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