A method for deep water purification using silk

A silk and water purification technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of cumbersome and time-consuming water purification process

Active Publication Date: 2020-01-10
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used water purification methods include adsorption method, coagulation method, filtration method, etc. However, they have a common disadvantage of strong selectivity: a water purifier can usually only treat pollutants of a specific type or size. Makes the water purification process cumbersome and time-consuming

Method used

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  • A method for deep water purification using silk
  • A method for deep water purification using silk
  • A method for deep water purification using silk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 Utilizes the specific operation of silk deep water purification

[0026] A method for deep water purification using silk, the specific steps are as follows:

[0027] S1. Prepare silk solution, and obtain silk solid powder after freeze-drying;

[0028] S2, adding the silk solid powder into the sewage, mixing evenly, so that the final concentration of silk is equal to 6% w / w;

[0029] S3, adding horseradish catalase and hydrogen peroxide to the solution obtained in step S2, so that the final solubility of horseradish peroxidase is equal to 15U / ml, and the final solubility of hydrogen peroxide is 3.5mmol / L, Mix evenly, and finally form a transparent gel;

[0030] S4. With the gradual shrinkage of the transparent gel in S3, the water in the gel is squeezed out to obtain a white gel, and the squeezed out water is purified water.

[0031] Preferably, the preparation method of the silk solid powder described in step S1 is:

[0032] S11, shred silkworm cocoons ...

Embodiment 2

[0038] Embodiment 2 removes dye experiment

[0039] Use the described water purification method of embodiment 1 to purify the sewage that contains dyestuff, experimental result is as follows figure 1 shown.

[0040] From figure 1 As can be seen in a, the water purification method of the present invention can be used to efficiently remove various dyes, including rhodamine B (RhB), rhodamine 6G (R6G), methylene blue (MB), Congo red (CR), eosin The removal rates of Y (EY) and bright green (BG) are above 99%, and the particle size of dye molecules is usually less than 5nm.

[0041] From figure 1 In b, it can be seen that in the case of high pollution (3.2mg / ml), this method can still achieve efficient removal of dyes, and the removal rate is also above 99%.

Embodiment 3

[0042] Embodiment 3 removes pathogen experiment

[0043] Use the water purification method described in Example 1 to carry out the pathogen removal experiment. In the experiment, we use smaller pathogens—viruses as pollutants, and the results are as follows: figure 2 shown.

[0044] figure 2 a is the electron micrograph of the solution before treatment, figure 2 B is the electron micrograph of the aqueous solution after treatment. Comparing the two figures, it is found that the water purification method of the present invention can effectively remove microscopic pathogen pollutants such as viruses in the water, indicating that the method can remove viruses with a size of nanometers in the sewage.

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Abstract

The invention discloses a method for deeply purifying water by using silk. The method comprises the following specific steps of S1, preparing a silk solution, and carrying out freeze drying to obtain silk solid powder; S2, adding the silk solid powder into sewage, and uniformly mixing to enable the final concentration of the silk to be greater than 4 percent w / w; S3, adding horseradish peroxidase and hydrogen peroxide into a solution obtained in the step S2, and uniformly mixing to finally form transparent gel; S4, gradually shrinking the transparent gel in the step S3, and extruding water from the gel to obtain white gel, wherein the extruded water is purified water. According to the water purification method disclosed by the invention, various pollutants in water can be non-selectively removed; and the method has the advantages of high efficiency and stability.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to a method for deep water purification using silk. Background technique [0002] Water pollution has always been a worldwide problem, and millions of people die from the diseases caused by it every year. In both developed and developing countries, more and more types of pollutants are entering water resources, making wastewater treatment increasingly difficult. At present, the most commonly used water purification methods include adsorption method, coagulation method, filtration method, etc. However, they have a common disadvantage of strong selectivity: a water purifier can usually only treat pollutants of a specific type or size. The process of purifying water becomes cumbersome and time-consuming. Therefore, people urgently need a more efficient and stable water purification method. Contents of the invention [0003] The purpose of the present invention is to ove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
CPCC02F1/5263C02F1/56
Inventor 陈政维刘向阳林友辉
Owner XIAMEN UNIV
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