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Preparation method and application of dust suppressant with photocatalytic degradation function

A technology of dust suppressant and photocatalysis, which is applied in the field of preparation of dust suppressant to achieve the effects of suppressing dispersion, good trapping and sedimentation effect, and good water solubility.

Pending Publication Date: 2022-08-02
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the chemical dust suppression technology can be combined with the photocatalytic technology, it is expected to improve the ambient air quality. However, there is no relevant research report so far.

Method used

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  • Preparation method and application of dust suppressant with photocatalytic degradation function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 60kg of sodium alginate to the reactor filled with 200L of water, stir until the sodium alginate is completely dissolved, adjust the temperature of the reactor to 50°C, slowly add 21kg of glycerol and 15kg of polyvinyl alcohol, stir until completely dissolved and then add 0.6kgN, N-methylenebisacrylamide, maintain the temperature of the reaction kettle at 50°C, and stir at a rate of 150 rpm, introduce nitrogen into the reaction kettle, and react for 2 hours. After the reaction, adjust the pH of the solution to 7 with HCl, and dry the solution to collect the solid product. , wash the product 3 times with absolute ethanol, and dry to constant weight to obtain a dust suppressant matrix material rich in hydrophilic groups and having a network structure, and the collection material is sealed for use;

[0029] In the reactor, add 180L absolute ethanol and 20L water to make ethanol-aqueous solution, then add the nano-TiO of 10kg 2Powder, 1kg of KH-550 silane coupling agent...

Embodiment 2

[0031] Add 50kg of sodium lignosulfonate to the reactor filled with 160L of water, stir until the sodium lignosulfonate is completely dissolved, adjust the temperature of the reactor to 40°C, slowly add 25kg of propylene glycol and 15kg of soluble starch, stir until completely dissolved and then add 0.75kg of N,N-methylenebisacrylamide, maintain the temperature of the reaction kettle at 40°C and the stirring rate at 170rpm, feed nitrogen into the reaction kettle, react for 1h, adjust the pH of the solution to 7 with HCl after the reaction, and dry the solution Collect the solid product, wash the product with absolute ethanol 3 times, and dry to constant weight to obtain a dust suppressant matrix material rich in hydrophilic groups and having a network structure, and the collected material is sealed for use;

[0032] In the reactor, add 144L absolute ethanol and 16L water to make ethanol-aqueous solution, then add the nano-TiO of 10kg 2 Powder, 0.75kg of KH-560 silane coupling ...

Embodiment 3

[0034] Add 40kg of sodium alginate to the reactor filled with 120L of water, stir until the sodium alginate is completely dissolved, adjust the temperature of the reactor to 45°C, slowly add 26kg of butanediol and 14kg of polyvinyl alcohol, stir until completely dissolved and then add 0.8kgN ,N-methylenebisacrylamide, keep the temperature of the reaction kettle at 45°C, the stirring speed is 200rpm, pass nitrogen into the reaction kettle, react for 2h, adjust the pH of the solution to 7.5 with HCl after the reaction, and dry the solution to collect the solid The product was washed 3 times with absolute ethanol, and dried to constant weight to obtain a dust suppressant matrix material rich in hydrophilic groups and having a network structure, and the collected material was sealed for use;

[0035] In the reactor, add 120L absolute ethanol and 12L water to make ethanol-aqueous solution, then add the nano-TiO of 10kg 2 Powder, 0.8kg of KH-570 silane coupling agent and 0.14kg of s...

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Abstract

The invention discloses a preparation method of a dust suppressant with a photocatalytic degradation function, which is characterized in that a natural multi-hydrophilic group material which is wide in source, green, non-toxic and easy to degrade is used as a synthetic matrix material of the dust suppressant, and is subjected to cross-linking reaction with a film-forming agent and a moisture absorbent under the action of a cross-linking agent to prepare the dust suppressant with the photocatalytic degradation function. The preparation method comprises the following steps: firstly preparing a hydrophilic group-containing dust suppressant, forming the dust suppressant which is rich in hydrophilic groups, has a net-shaped structure and has wetting, consolidation and coagulation properties, and carrying out coupling grafting reaction on the prepared dust suppressant and coupling agent-modified nano TiO2, so that the nano TiO2 is loaded on the prepared dust suppressant, and finally, the dust suppressant with a photocatalytic degradation function is prepared. The dust suppressant disclosed by the invention is green, environment-friendly, easy to degrade, excellent in dust suppression performance, simple to apply and wide in application range, has a photocatalytic degradation function, can be applied to atmospheric dust fall, dust suppression of a construction working surface, dust suppression of a material pile, dust suppression of road transportation and sand fixation of soil, and has important significance in improving the quality of ambient air.

Description

technical field [0001] The invention belongs to the field of environmental functional materials, and in particular relates to a preparation method and application of a dust suppressant with photocatalytic degradation function. technical background [0002] In recent years, PM 10 , PM 2.5 The high levels of particulate matter in the atmosphere not only cause the deterioration of air quality and induce respiratory diseases in the human body, but also the dust particles generated by some chemical processing processes may also be accompanied by many organic pollutants, which are harmful to the human body. Therefore, the need for improving the quality of the atmospheric environment is becoming more and more urgent. The particulate matter in the atmosphere mainly comes from the fugitive dust generated by various production and living activities or natural activities, mainly from the open-pit mining and processing of ore, the construction of open-pit sites, the transportation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22B01J31/38C08F251/00C08F261/04C08F222/38C08F289/00
CPCC09K3/22B01J31/38C08F251/00C08F261/04C08F289/00B01J35/23B01J35/39C08F222/385Y02A50/2351
Inventor 瞿广飞曾映达解若松陈伊婷吴缓缓杨玉益李军燕张朝能
Owner KUNMING UNIV OF SCI & TECH
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