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Preparation method of mineralized flat filament sewage treatment membrane

A technology for sewage treatment and flat silk, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of limiting the application of nano-hydroxyapatite materials and lack of adsorption materials, etc. Achieve the effect of excellent heavy metal and organic solvent adsorption performance, good stability and excellent structural stability

Active Publication Date: 2020-06-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the above-mentioned problems of nano-hydroxyapatite particles in sewage treatment limit the application of nano-hydroxyapatite materials in sewage treatment.
So far, there is no preparation method of nano-hydroxyapatite sewage treatment materials with simple process, good adsorption effect and stability, and there is a lack of adsorption materials prepared by flat silk

Method used

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  • Preparation method of mineralized flat filament sewage treatment membrane
  • Preparation method of mineralized flat filament sewage treatment membrane
  • Preparation method of mineralized flat filament sewage treatment membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment includes the following steps in turn:

[0033] (1) The large silkworms in the silk-spinning stage spin silk in a flat object to obtain flat silk, and the microscopic appearance is a micron-scale fiber structure (such as figure 1 shown);

[0034] (2) Fix the flat wire in step (1) around, clean it up, keep it in deionized water with a water temperature of 40°C for 30min, and degumming;

[0035] (3) Soak the degummed flat silk in step (2) in 2% urea solution for 30min, so that the crystal structure in the flat silk is softened; Soak and wash several times with 80% ethanol solution afterwards, make the flat silk in the flat silk The fibroin is solidified to obtain post-treated flat silk;

[0036] (4) Adding the post-treated flat wire material in step (3) into the mineralization solution for biomimetic mineralization. The steps of biomimetic mineralization are as follows: put CaCl 2 (final concentration 100mM) join in the flat silk material of aftertreatm...

Embodiment 2

[0038] This embodiment includes the following steps in turn:

[0039] (1) The large silkworm in the silk-spinning stage spins silk in a plane object to obtain flat silk;

[0040] (2) Fix the four sides of the flat wire in step (1), clean it up, keep it in deionized water with a water temperature of 60° C. for 20 minutes, and degumming;

[0041] (3) Soak the degummed flat silk in step (2) with 1% urea solution and wash several times, so that the fibroin in the flat silk is solidified, and obtain post-treated flat silk;

[0042] (4) Adding the post-treated flat wire material in step (3) into the mineralization solution for biomimetic mineralization. The steps of biomimetic mineralization are as follows: put Ca(NO 3 ) 2 4H 2 O (final concentration 10mM) was added to the post-treated flat silk material and soaked for 1h; the final concentration was 6mM (NH 4 ) 2 HPO 4Slowly drop it into the composite solution at a rate of 2mL / min. During this period, the solution system is ...

Embodiment 3

[0045] This embodiment includes the following steps in turn:

[0046] (1) The large silkworm in the silk-spinning stage spins silk in a plane object to obtain flat silk;

[0047] (2) Fix the flat wire in step (1) around, clean it up, keep it in deionized water with a water temperature of 80°C for 20min, and carry out degumming;

[0048] (3) Soak the degummed flat silk in step (2) in 10% urea solution for 20min, so that the crystal structure in the flat silk is softened; then soak and wash several times with 80% methanol solution, so that the flat silk in the flat silk The fibroin is solidified to obtain post-treated flat silk;

[0049] (4) Adding the post-treated flat wire material in step (3) into the mineralization solution for biomimetic mineralization. The steps of biomimetic mineralization are as follows: add CaCl2 (final concentration 20mM) to the post-treated flat silk material and soak for 1h; 2 HPO 4 Slowly drop it into the composite solution at a rate of 5mL / min....

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Abstract

The invention discloses a preparation method of a mineralized flat filament sewage treatment membrane. The preparation method includes steps of: enabling the adult silkworms in the spinning stage in aplanar object to obtain flat silk; fixing the periphery of the flat silk, cleaning the flat silk, and degumming the flat silk in deionized water to obtain degummed flat silk; soaking the degummed flat silk in an organic alcohol solution to soften the flat silk; then soaking the flat silk in an alcoholic solution and washing the flat silk for several times to cure the flat plate filament, so as toobtain a post-treated flat silk; and adding the post-treated flat silk into a mineralizing solution for biomimetic mineralization, and drying the flat silk to obtain the mineralized flat filament sewage treatment membrane. According to the method, the nano apatite particles with certain sizes and uniform pore diameters can be formed on the surface of the flat plate filament, good and excellent performance is achieved, the preparation process of the method is environmentally friendly and free of pollution, and application can be wider.

Description

technical field [0001] The invention discloses a method for preparing a sewage treatment membrane in the field of adsorption materials, and in particular relates to a method for preparing a mineralized flat silk sewage treatment membrane. Background technique [0002] Countless people or animals die from diseases caused by sewage every year. How to treat sewage is a worldwide problem. With the advancement of science and technology and the improvement of people's living standards, the standards for industrial water, environmental water and domestic water are also constantly improving. Physical adsorption and chemical adsorption are two important treatment methods in sewage treatment and play a pivotal role. Hydroxyapatite is the main inorganic component of natural bones and teeth. Due to its low production cost, good biocompatibility, and amphiphilicity, it has major applications in many fields such as bone tissue engineering, drug slow-release carrier, and sewage purificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F1/42C02F101/20C02F101/30
CPCB01J20/048B01J20/24B01J20/28038C02F1/288C02F1/42C02F2001/425C02F2101/20C02F2101/30
Inventor 杨明英帅亚俊
Owner ZHEJIANG UNIV
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