A preparing method and a product of a heavy metal adsorption material for a polluted water body

An adsorption material and heavy metal technology, which is applied in the field of preparation of heavy metal adsorption materials in polluted water, can solve the problems of high toxicity and poor control of modification conditions, and achieve good adsorption capacity and good adsorption effect

Active Publication Date: 2016-11-09
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the absorbent material is acrylic fiber, which is also a synthetic fiber, the high purity makes the modification smoother, but there are many uncertain factors in the modification of natural fibers
Moreover, carbon disulfide is used in the reaction process, which is highly toxic, and the modification conditions involve the regulation of pH, making the modification conditions relatively difficult to control

Method used

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  • A preparing method and a product of a heavy metal adsorption material for a polluted water body
  • A preparing method and a product of a heavy metal adsorption material for a polluted water body
  • A preparing method and a product of a heavy metal adsorption material for a polluted water body

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preparation example Construction

[0035] A preparation method of heavy metal adsorption material in polluted water, the steps are:

[0036] 1) The straw is washed, dried, pulverized, sieved and sieved;

[0037] 2) The sieved powder is completely submerged in alkali solution for soaking treatment;

[0038] 3) The treated sample is separated by suction filtration from solid to liquid, washed with water, and then drained;

[0039] 4) The sample in the previous step is immersed in acrylonitrile for etherification treatment;

[0040] 5) suction filter the etherified sample to remove excess acrylonitrile;

[0041] 6) Immerse the sample in the previous step into the enamine / ethylene glycol system for amination treatment

[0042] 7) Suction filter the aminated sample, rinse with water several times, and drain;

[0043] 8) Immerse the sample in the previous step into the hydroxylamine hydrochloride and potassium carbonate solution system, and heat to carry out the oximation reaction;

[0044] 9) Suction filter the...

Embodiment 1

[0057] A preparation method of heavy metal adsorption material in polluted water, the steps are:

[0058] 1) The straw is washed, dried, crushed, and sieved through a 20-mesh sieve;

[0059] 2) Completely immerse the sieved powder in 1mol / L potassium hydroxide solution, and soak for 24 hours at room temperature;

[0060] 3) The treated sample is separated by solid-liquid suction filtration, washed with pure water, and then drained;

[0061] 4) Immerse the sample in the previous step in acrylonitrile with a mass concentration of 90%, and perform an etherification reaction at 30° C. for 1 hour;

[0062] 5) suction filter the etherified sample to remove excess acrylonitrile;

[0063] 6) Immerse the sample in the previous step into the diethylenetriamine / ethylene glycol system at a ratio of 1:30; amination reaction at 80°C for 3 hours;

[0064] 7) Suction filter the aminated sample, rinse with water several times, and drain;

[0065] 8) Immerse the sample in the previous step ...

Embodiment 2

[0069] A preparation method of heavy metal adsorption material in polluted water, the steps are:

[0070] 1) The straw is washed, dried, crushed, and sieved through a 20-mesh sieve;

[0071] 2) Completely immerse the sieved powder in 2mol / L potassium hydroxide solution, and soak for 36 hours at room temperature;

[0072] 3) The treated sample is separated by solid-liquid suction filtration, washed with pure water, and then drained;

[0073] 4) Immerse the sample in the previous step in acrylonitrile with a mass concentration of 70%, and perform an etherification reaction at 50° C. for 1 hour;

[0074] 5) suction filter the etherified sample to remove excess acrylonitrile;

[0075] 6) Immerse the sample in the previous step into the triethylenetetramine / ethylene glycol system with a ratio of 1:20; amination reaction at 60°C for 5 hours;

[0076] 7) Suction filter the aminated sample, rinse with water several times, and drain;

[0077] 8) Immerse the sample in the previous s...

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Abstract

A preparing method of a heavy metal adsorption material for a polluted water body is disclosed. Agricultural waste corn straw is fully utilized in the method, and is adopted after being modified as the heavy metal cadmium adsorption material for the polluted water body. The material has high adsorbability and achieves good adsorption effects in practical application. The invention also discloses the heavy metal adsorption material prepared by the method and used for the polluted water body.

Description

technical field [0001] The invention relates to a preparation method of a heavy metal adsorption material in polluted water. Background technique [0002] With the development of mining, smelting, electroplating electronics, chemical industry and other industries, as well as the unreasonable landfill and stacking of some domestic solid waste, various heavy metal pollutants are extremely easy to enter the water body, causing water pollution, and then affecting people's health . Therefore, in order to ensure the safety of production and domestic water, we urgently need efficient adsorption materials for heavy metal pollution in water. In recent years, people have paid attention to the application of modified cellulose in the field of heavy metal adsorption in water. [0003] my country is a large agricultural country with the largest cultivated area of ​​crops in the world, and about 700-800 million tons of straw are produced every year, of which rice straw and corn straw ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/32C02F1/28C02F101/20
CPCB01J20/24B01J20/3206B01J20/3231C02F1/286C02F2101/20
Inventor 郑刘春
Owner SOUTH CHINA NORMAL UNIVERSITY
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