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Preparation method of acrylic acid/polyvinylpyrrolidone/palygorskite composite adsorbing material

A polyvinylpyrrolidone and composite adsorption material technology, which is applied in adsorption water/sewage treatment, alkali metal compounds, alkali metal oxides/hydroxides, etc., and can solve water environment pollution, high toxicity, difficult biodegradation and decolorization, etc. problem, to achieve the effect of improving adsorption performance and increasing molecular gap aggregation

Inactive Publication Date: 2014-03-12
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 method of acrylic acid/polyvinylpyrrolidone/palygorskite composite adsorbing material
  • Preparation method of acrylic acid/polyvinylpyrrolidone/palygorskite composite adsorbing material
  • Preparation method of acrylic acid/polyvinylpyrrolidone/palygorskite composite adsorbing material

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Experimental program
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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 600 mL, stir mechanically (1000 rpm) for 8 hours, dilute the suspension with water, let it stand for a while, pour The supernatant and the bottom layer of sand layer are washed three times with the mud suspension in the middle layer, dried, crushed, acidified and washed with 1 M hydrochloric acid to neutrality, then dried and crushed, and passed through a 200-mesh sieve to obtain the acidified modified slope Goshenite clay (PGS), spare.

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

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 600 mL, stir mechanically (1000 rpm) for 8 hours, dilute the suspension with water, let it stand for a while, pour The supernatant and the bottom layer of sand layer are washed three times with the mud suspension in the middle layer, dried, crushed, acidified and washed with 1 M hydrochloric acid to neutrality, then dried and crushed, and passed through a 200-mesh sieve to obtain the acidified modified slope Goshenite clay (PGS), spare.

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

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 600 mL, stir mechanically (1000 rpm) for 8 hours, dilute the suspension with water, let it stand for a while, pour The supernatant and the bottom layer of sand layer are washed three times with the mud suspension in the middle layer, dried, crushed, acidified and washed with 1 M hydrochloric acid to neutrality, then dried and crushed, and passed through a 200-mesh sieve to obtain the acidified modified slope Goshenite clay (PGS), spare.

[0035] (2) Preparation of acrylic acid / polyvinylpyrrolidone / palygorskite clay composite adsorption material: Weigh 7.2g of AA and 20 mL of distilled water into a three-necked flask, stir mechanically at room temperature for half an hour, then add Adjust the neutralization degree to 60% with 2.4g NaOH, and stir for 30 minutes, add 12.0g of modified PGS, continue to stir for 10 minutes, then add 2.4g of PVP and 0...

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Abstract

The invention provides a preparation method of an acrylic acid / polyvinylpyrrolidone / palygorskite clay composite adsorbing material. The preparation method is characterized in that acrylic acid, polyvinylpyrrolidone and palygorskite clay are used as raw materials, N, N'-methylene-bisacrylamide is used as a crosslinking agent, potassium peroxodisulfate is used as an initiating agent, and the composite material with a network interpenetration structure is obtained through free radical polymerization. As the polyvinylpyrrolidone and the palygorskite clay are introduced, the network spatial structure of the polymer is adjusted through the special structure on the surface of the palygorskite clay, adsorption sites of the spatial three-dimensional network structure of the composite material are increased, and the molecular clearance gathering of the polymer is increased, so that the cationic dye adsorption property of the polymer is improved. Experiments prove that the cationic dye methylene blue adsorption capacity of the composite adsorbing material prepared by the method is 1700mg / g-1980mg / g, and the removal rate of cationic dye methylene blue 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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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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