Humic acid type adsorbing material and preparation method and application thereof

A technology of adsorption material and humic acid, which is applied in the field of material preparation and environmental science, can solve the problems of high technical requirements and cost of synthesis process, complex synthesis method, poor selectivity, etc., and achieve low requirements for reaction conditions, simple synthesis process and high treatment effect Improved effect

Pending Publication Date: 2020-10-30
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Traditional hydrogels have low adsorption capacity and removal rate, poor selectivity, and most of them cannot be reused, failing to meet the requirements for the removal of organic dyes in actual production. Moreover, the synthetic raw materials of traditional hydrogels are highly toxic, the synthetic methods are complex, and the technical requirements of the synthetic process are high. and high cost

Method used

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  • Humic acid type adsorbing material and preparation method and application thereof
  • Humic acid type adsorbing material and preparation method and application thereof
  • Humic acid type adsorbing material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Mix 10g of 0.5% carboxymethyl cellulose solution, 10g of 0.1% sodium humate solution and 6g of 0.5% sodium montmorillonite aqueous dispersion solution at 55°C under stirring at a speed of 100r / min to form a mixed solution A. Then, 10 g of 0.2% N,N'-methylenebisacrylamide solution was added to 10 g of 20% acrylic acid solution to form a mixed solution B, which was dropped into the mixed solution A at a rate of 3 drops / s. At the same time, 10 g of 0.4% ammonium persulfate solution was dropped into the mixed solution A at a rate of 2 drops / s. After the above solution was added dropwise and the mechanical stirring was continued for 20 min, the temperature was raised to 70° C., and the stirring was continued for 2 h to obtain a viscous gel material. The gel material was frozen at -4°C for 12 hours, then thawed at room temperature for 6 hours, frozen and thawed three times under the same conditions and operations, and then placed in a freeze dryer to freeze-dry to obtain humi...

Embodiment 2

[0057] Mix 15g of 0.6% sodium carboxymethylcellulose solution, 10g of 0.8% potassium humate solution and 8g of 1.0% calcium-based montmorillonite water dispersion solution at 60°C under stirring at a speed of 125r / min to form a mixed solution A. Then add 10g of 0.3% N,N'-methylenebisacrylamide solution into 10g of 40% acrylic acid solution to form mixed solution B, which is dropped into mixed solution A at a rate of 4 drops / s. At the same time, 10 g of 0.7% potassium persulfate solution was dropped into the mixed solution A at a rate of 3 drops / s. After the dropwise addition of the above solution was completed, the mechanical stirring was continued for 30 minutes, and then the temperature was raised to 70° C., and the stirring was continued for 3 hours to obtain a viscous gel material. The gel material was frozen at -4°C for 12 hours, then thawed at room temperature for 8 hours, frozen and thawed four times under the same conditions and operations, and then placed in a freeze ...

Embodiment 3

[0059] Mix 20g of 0.7% potassium carboxymethylcellulose solution, 10g of 1.5% sodium humate solution and 10g of 1.5% sodium montmorillonite aqueous dispersion solution at 65°C under stirring at a speed of 150r / min to form a mixed solution A. Then add 10g of 0.5% N,N'-methylenebisacrylamide solution into 10g of acrylic acid solution with a mixing degree of 60% to form a mixed solution B, which is dropped into the mixed solution A at a rate of 5 drops / s. At the same time, 10 g of 1.0% ammonium persulfate solution was dropped into the mixed solution A at a rate of 4 drops / s. After the above solution was added dropwise, the mechanical stirring continued for 40 minutes, and then the temperature was raised to 70° C., and the stirring was continued for 4 hours to obtain a viscous gel material. The gel material was frozen at -4°C for 12 hours, then thawed at room temperature for 10 hours, frozen and thawed 5 times under the same conditions and operations, and then placed in a freeze d...

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Abstract

The invention discloses a humic acid type adsorbing material and a preparation method and application thereof, and belongs to the technical field of material preparation and environmental science. Carboxymethyl cellulose or salt thereof, humate and montmorillonite are used as raw materials, a monomer, a cross-linking agent and an initiator are added, and aqueous solution polymerization is performed to obtain the product. According to the humic acid type adsorbing material with the porous structure synthesized by the method, numerous carboxyl active groups in the raw materials and hydroxyl groups in the montmorillonite structure are utilized; a large number of hydroxyl groups and carboxyl groups in a montmorillonite structure can be quickly close to water molecules in water, the hydroxyl groups can form hydrogen bonds, the carboxyl groups can form carboxylate radicals, and finally the purpose of removing organic dye pollutants is achieved through the electrostatic attraction effect of the carboxylate radicals and dye molecules. Meanwhile, a place is provided for adsorption of organic dyes by utilizing a layered structure and a huge specific surface area of montmorillonite. The synthetic raw materials are low in price, the synthetic process is simple, the reaction condition requirement is low, the operability is high, and the synthetic product is environmentally friendly and hasa good application prospect.

Description

technical field [0001] The invention belongs to the field of material preparation and environmental science and technology, and in particular relates to a humic acid type adsorption material and its preparation method and application. Background technique [0002] In today's society, problems such as environmental pollution and energy shortage have become hot issues of widespread concern in society. Due to the rapid development of fields such as textiles, leather, food processing, pharmaceuticals, cosmetics and paper industry, dyes have become one of the most prominent pollutants causing wastewater pollution. These dye wastes are hazardous, toxic, non-biodegradable and, in some cases, carcinogenic. It can cause headaches, skin allergies, and even affect the normal function of the liver. It not only causes huge environmental pollution problems, but also causes a lot of waste of water resources. It is imperative to develop a new type of environmentally friendly, efficient a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08J3/075C08J3/24C08L1/28C08L97/00C08K3/34C08F251/02C08F289/00C08F220/06C08F222/38B01J20/24B01J20/28B01J20/30C02F1/28C02F101/30
CPCC08J9/28C08J3/075C08J3/246C08F251/02C08F289/00B01J20/24B01J20/28057C02F1/288C08J2301/28C08J2201/0484C08J2497/00C08J2401/28C08J2397/00C02F2101/308C08F220/06C08F222/385B01J20/3078C08H6/00C08L99/00C08K3/346C08L1/286B01J2220/4837B01J2220/4825B01J20/22
Inventor 牛育华韩星星黄良仙孙永会宋洁朱晓斌王阳阳赵轩
Owner SHAANXI UNIV OF SCI & TECH
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