A kind of preparation method of mineralized flat silk sewage treatment membrane

A technology of sewage treatment and flat wire, which is applied in the direction of water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of limiting the application of nano-hydroxyapatite materials and lack of adsorption materials. Achieve excellent heavy metal and organic solvent adsorption performance, simple preparation process, and short production cycle

Active Publication Date: 2021-06-08
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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  • A kind of preparation method of mineralized flat silk sewage treatment membrane
  • A kind of preparation method of mineralized flat silk sewage treatment membrane
  • A kind of preparation method of mineralized flat silk sewage treatment membrane

Examples

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Embodiment 1

[0032] This embodiment includes the following steps:

[0033] (1) The east silkworm in the spitting stage is spit in the plane object, obtain a flat wire, the micro-morphology is the micrometer fiber structure (such as figure 1 Indicated by it);

[0034] (2) Fix the flat wire in step (1), cleaner, and maintains 30 min in deionized water at 40 ° C, and delatizing;

[0035] (3) Soak the degumming plate in step (2) in a 2% urea solution, so that the crystal structure in the plate filament was softened; then soaked with 80% ethanol solution and washed several times, so that in the plate Silk protein curing, obtains the post-treated flat wire;

[0036] (4) The flat wire material processed in step (3) is added to the mineralization liquid for bionic mineralization. The bionic mineralization steps are as follows: put CACL 2 (Final concentration 100 mm) is added to the post-treated flat wire material soaking 1 h; 60 mm NA by constant current pump 2 HPO 4 The solution was slowly added drop...

Embodiment 2

[0038] This embodiment includes the following steps:

[0039] (1) The east silkworm in the vomer is spit in the plane object to obtain a flat wire;

[0040] (2) Secure the plates in step (1) to be fixed, cleaned, and maintain 20 min, degenerate in deionized water at 60 ° C;

[0041] (3) Soak the degumming plate in step (2) with 1% urea solution and washed several times, so that silk protein in the plate is cured to obtain a post-treated flat wire;

[0042] (4) The flat wire material processed in step (3) is added to the mineralization liquid for bionic mineralization. The bionic mineralization steps are as follows: put CA (NO 3 ) 2 · 4h 2 O (final concentration 10 mm) is added to the post-treatment flat wire material soaking 1 h; the final concentration is 6mm through the constant current pump (NH) 4 ) 2 HPO 4The solution system was slowly added dropwise to the composite solution at a rate of 2 ml / min, during which the solution system remained at a constant temperature of 40 ° C...

Embodiment 3

[0045] This embodiment includes the following steps:

[0046] (1) The east silkworm in the vomer is spit in the plane object to obtain a flat wire;

[0047] (2) Secure the flat wire in step (1), cleaner, and maintains 20 min in deionized water in the water temperature of 80 ° C for delashing;

[0048] (3) Soak the degumming plate in step (2) for 20 min in a 10% urea solution such that the crystal structure in the plate filament was softened; after soaking with 80% methanol solution and washed several times, the flattening Silk protein curing, obtains the post-treated flat wire;

[0049] (4) The flat wire material processed in step (3) is added to the mineralization liquid for bionic mineralization. The bionic mineralization step is as follows: adding CaCl2 (final concentration 20 mm) to the post-treatment flat wire material soaking 1 h; 12 mm Na by constant current pump 2 HPO 4 The solution system was slowly added dropwise to the composite solution at a rate of 5 ml / min, and the...

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Abstract

The invention discloses a preparation method of a mineralized flat silk sewage treatment membrane. The large silkworms in the silk-spinning stage spin silk in a flat object to obtain flat silk; fix the flat silk around, clean it, degumming in deionized water to obtain degummed flat silk; soak the degummed flat silk in organic alcohol solution to make flat flat silk The silk is softened; then soaked in alcohol solution and washed several times to solidify the flat silk to obtain post-treated flat silk; add the post-treated flat silk to the mineralization solution for biomimetic mineralization, and dry to obtain mineralized flat silk Sewage treatment membrane. The invention can form nano-apatite particles with a certain size and uniform pore diameter on the surface of the flat wire, has good and excellent performance, and the preparation process of the method is environmentally friendly and pollution-free, and can be applied more widely.

Description

Technical field [0001] The present invention discloses a method for preparing a sewage treatment membrane in the field of adsorption materials, and more particularly to a method for preparing a mineralized flat wire sewage treatment membrane. Background technique [0002] Every year, countless people or animals die from diseases caused by sewage, how to perform sewage treatment is a worldwide problem. With the advancement of technology and the improvement of people's living standards, the standards for industrial water, environmental water and water use water are also increasing. Physical adsorption method and chemical adsorption method are two important treatment methods in sewage treatment, playing a raised role. Hydroxyapatite is the main inorganic component constituting natural bones and teeth. Due to its low production cost, good biocompatibility, two-pro-sex, in many areas such as bone tissue engineering, drug sustained release carriers, sewage purification, and many other ...

Claims

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Application Information

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Patent Type & Authority Patents(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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