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Preparation and application of modified straw fiber adsorption material

A technology for modifying straws and adsorbent materials, which is applied in the fields of adsorbed water/sewage treatment, other chemical processes, water/sludge/sewage treatment, etc. Low energy consumption, easy availability of raw materials, and simple operation

Inactive Publication Date: 2018-10-19
SOUTH CHINA NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] my country is a large agricultural country with rich straw resources and high fiber content, but they have not been rationally utilized, and most of them have been incinerated on the spot, which not only causes waste of resources but also easily causes environmental pollution. If these straws can be effectively The chemical modification of straw has been developed into an adsorption material with excellent adsorption performance, which not only provides a new idea for solving the adsorption of antibiotics in water, but also opens up a new way for the comprehensive utilization of straw
At present, the phosphorylation and chelation modification of straw and its application in the adsorption of sulfonamide antibiotics in water have not been reported.

Method used

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  • Preparation and application of modified straw fiber adsorption material
  • Preparation and application of modified straw fiber adsorption material
  • Preparation and application of modified straw fiber adsorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The preparation of a modified straw fiber adsorption material comprises the following steps:

[0052] 1) Wash, dry, pulverize, sieve and sieve corn stalks to obtain corn stalk powder with a particle size of 0.45mm, immerse it in 1mol / L sodium hydroxide solution at room temperature, soak for 24h, and then Continue to wash with deionized water during the suction filtration process of the vacuum filtration pump until the pH of the filtrate is neutral, and drain;

[0053] 2) Add an etherification agent of acrylonitrile solution with a mass fraction of 98% to the corn stalk sample after the above treatment until the corn stalk sample is completely submerged, wrap the beaker with tin foil, and perform etherification reaction at 30°C for 1 hour in a constant temperature water bath, and then Use a vacuum filter pump to filter out the acrylonitrile solution, then wash with deionized water to remove excess acrylonitrile solution;

[0054] 3) Add a diethylenetriamine / ethylene gly...

Embodiment 2～5

[0058] The operating steps are the same as in Example 1, and the raw materials and reaction conditions are set in Table 1 below, and those not mentioned in Table 1 are consistent with Example 1:

[0059]

[0060]

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Abstract

The invention discloses preparation and application of a modified straw fiber adsorption material. The preparation method includes the steps of: 1) crushing straw, then immersing the crushed straw inalkali liquor, and performing separation; 2) carrying out etherification reaction and amination reaction successively in the treated straw sample; and 3) adding a phosphorylation agent into the obtained product for phosphorylation treatment, thus obtaining the modified straw fiber adsorption material. Specifically, the phosphorylation agent adopted in step 3) is a mixed solution containing paraformaldehyde and phosphorous acid. The method has the characteristics of mild reaction conditions, simple operation, and cheap and easily available raw materials. The adsorption material prepared by themethod has a good adsorption effect on sulfonamide antibiotics.

Description

technical field [0001] The invention relates to the technical field of water treatment application, in particular to the preparation and application of a modified straw fiber adsorption material. Background technique [0002] In recent years, my country's water pollution not only involves heavy metal pollution, but also the pollution of many antibiotics, because with the development of society and economy, more and more antibiotics are used in people's lives, and the environmental residues of antibiotics can change the environmental microorganisms. species, disrupting the balance of the ecosystem, and the induced resistance genes can enter the human body through food and other channels, inducing drug resistance and other serious consequences. [0003] However, antibiotics are extremely difficult to degrade in nature, and through the circulation of nature, water becomes the ultimate belonging of antibiotics in nature. Therefore, it is particularly important to remove antibioti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/38
CPCB01J20/24B01J2220/4825C02F1/286C02F2101/40
Inventor 郑刘春阳月贝彭丹夏鹏飞许宗林李立峰黄泰宇
Owner SOUTH CHINA NORMAL UNIVERSITY
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