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Preparation method of material for degrading dye wastewater

A technology of dye wastewater and polymer materials, which is applied in the field of photocatalytic degradation agent for colored pollution, can solve the problems of neglecting the excellent performance of rushes, and achieve the effects of excellent porosity, improved hydrophilicity and excellent adsorption performance.

Inactive Publication Date: 2019-03-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This genus is widely distributed and rich in resources. At present, there are many researches on its chemistry and pharmacology, but the excellent performance of rushes as natural porous cellulose fibers is ignored.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] A method for preparing a material for degrading dye wastewater, the specific steps of the preparation process are as follows:

[0029] a Preparation of washing solution

[0030] Put the surfactant in a solution mixed with an alcoholic organic solvent and water, stir evenly, and prepare a washing liquid, wherein the bath ratio of the washing liquid is 1:40 to 1:55, and the alcoholic organic solvent in the washing liquid The volume ratio with water is 10%:90%~40%:60%, the concentration of surfactant is 0.2g / L~1g / L, the stirring speed is 100~250r / min, and the stirring temperature is 10~35℃, The stirring time is 10-30 minutes. The surfactant is one of monolauryl phosphate or sodium lauryl amphoteric acetate or lauryl amidopropyl ammonium oxide or lauryl amidopropyl betaine or potassium lauryl ether phosphate, and the alcohols are organic The solvent is one of isopropanol or ethanol.

[0031] b Pretreatment of rush fibers

[0032]Place the rush fiber in the washing solut...

Embodiment 1

[0039] According to the above process steps: mix 0.004g of monolauryl phosphate with 2mL of ethanol and 18mL of water, stir at 100r / min for 10min to prepare a washing liquid, then put 0.5g of rush in the washing liquid, wash at 20°C for 10min, and dry at 35°C After 30 minutes, the washed rushes were obtained. Put 5g of polyurethane and 5g of titanium dioxide in 95g of N,N-dimethylformamide at 20°C and stir at 500r / min for 1h to form a titanium dioxide dispersion, put the washed rush in the titanium dioxide dispersion at 20°C for 1h, and then immerse it at 40°C Bake for 6 hours to obtain titanium dioxide modified rushes.

Embodiment 2

[0041] According to the above process steps: mix 0.02g sodium laurylamphoacetate with 8mL ethanol and 12mL water, stir at 150r / min for 15min to prepare washing solution, then put 0.5g rush in the washing solution, wash at 25°C for 120min, and dry at 35°C After 25 minutes, the washed rushes were obtained. Put 10g of polyvinylpyrrolidone and 10g of titanium dioxide in 95g of N,N-dimethylformamide at 30°C and stir at 1000r / min for 3h to form a titanium dioxide dispersion, place the washed rush in the titanium dioxide dispersion at 30°C for 3h, Bake at 60°C for 5 hours to obtain titanium dioxide modified rushes.

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Abstract

The invention discloses a preparation method of a material for degrading dye wastewater, and belongs to a production technology of a photocatalytic colored pollution degrading agent. Through change ofa preparation method of a conventional titanium dioxide modified material, a juncus roemerianus fiber is placed in a mixed solution of an alcoholic organic solvent and water for washing, then nanometer titanium dioxide and a viscous high molecular material are dissolved in an organic solvent, and by virtue of a three-dimensional porous structure and high adsorption of the juncus roemerianus fiber, the titanium dioxide is adsorbed in pores thereof. By adopting the preparation method, the preparation process of the titanium dioxide modified material is effectively shortened, and the fastness and the loading capacity of the titanium dioxide on a fiber matrix can be also effectively improved. The titanium dioxide modified juncus roemerianus fiber prepared with the preparation method can be applied to photocatalytic degradation of dyes, has excellent photocatalytic degradation performance, and is high in efficiency, environmentally-friendly and economical.

Description

technical field [0001] The invention relates to a preparation method of a material for degrading dye wastewater, which belongs to the manufacturing technology of a photocatalytic degradation agent for colored pollution. Background technique [0002] With the continuous development of textile, leather and other industries, a large amount of dye wastewater is discharged into the water body environment. Due to the variety of industrial dyes and complex components, it is difficult to remove them from the water body, thereby disturbing and destroying the biological growth environment in the water body. Cause serious water pollution. Therefore, the treatment and recycling of dye wastewater is of great significance to the sustainable development of enterprises and environmental protection. Currently used water treatment processes such as coagulation, sedimentation, and biological oxidation, as well as purification technologies such as activated carbon adsorption and membrane treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J35/06C02F1/30C02F101/30
CPCC02F1/30B01J31/38C02F2305/10C02F2101/308B01J35/58B01J35/39
Inventor 张春华周思婕夏良君付专王芷琪徐卫林
Owner WUHAN TEXTILE UNIV
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