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Method for preparing adsorbent with modified wheat straws

A wheat straw and adsorbent technology is applied in the field of preparing adsorbents from modified wheat straw, and achieves the effects of reduced manufacturing cost, environmental protection and simple preparation process

Inactive Publication Date: 2016-11-23
洛阳新巨能高热技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for preparing adsorbent from modified wheat straw. The technical problem to be solved is to use agricultural by-product wheat straw as raw material, and after modification, the adsorption performance of wheat straw is greatly improved, and it can be effectively used for waste water. Because wheat straw is cheap and easy to get, the cost of wastewater treatment for enterprises is greatly reduced, resulting in great economic benefits

Method used

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preparation example Construction

[0023] The invention discloses a method for preparing an adsorbent from modified wheat straw, the preparation method comprising the following steps:

[0024] (1) Wash the wheat straw repeatedly with tap water to remove other impurities such as dust and floating dust on the surface of the wheat straw, then rinse it with distilled water several times until it is clean, and soak for 24 hours;

[0025] (2) Take out the wheat straw and rinse it with distilled water several times, put it in an oven, and dry it to constant weight at 80°C;

[0026] (3) Cut the wheat straw into small sections, pulverize with a pulverizer, sieve, and take the wheat straw of 40-60 mesh;

[0027] (4) Weigh a certain amount of wheat straw into an Erlenmeyer flask, add epichlorohydrin, ethanol, and sodium hydroxide solution, and finally place the Erlenmeyer flask in a constant temperature oscillator, shake it at 30°C for 3 hours, take it out, and use Rinse repeatedly with distilled water until neutral;

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Embodiment

[0034] Select a certain amount of wheat straw and wash it repeatedly with tap water to remove other impurities such as dust and floating dust on the surface of the wheat straw, rinse it with distilled water several times until it is clean, soak it for 24 hours, take it out and rinse it several times, then put it in an oven at 80°C Dry down to constant weight; cut the wheat straw into small pieces, pulverize with a pulverizer, sieve, and take 40-60 mesh wheat straw; weigh 1.5g of 40-60 mesh wheat straw in a 250mL Erlenmeyer flask, add 30mL of epichlorohydrin, 15mL of ethanol, 100mL of 2mol / L sodium hydroxide solution, and finally place the Erlenmeyer flask in a constant temperature oscillator, shake it at 30°C for 3 hours, take it out, and rinse it repeatedly with distilled water until neutral; Then put the washed straw into a 250mL conical flask, add 3.0g of sodium carbonate, 15mL of ethanol, 15mL of diethylenetriamine, and 100mL of distilled water, then put the conical flask i...

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Abstract

The invention provides a method for preparing an adsorbent with modified wheat straws. The agricultural by-product wheat straws is effectively utilized, the wheat straws are chemically modified by using epoxy chloropropane and diethylenetriamine, the adsorptive property of the modified wheat straws is greatly improved, and the modified wheat straws become a cheap, easy-to-obtain and efficient wastewater adsorbent. The method is widely used for industrial wastewater treatment, the costs for wastewater treatment of enterprises are reduced, waste is utilized, the environment is protected, and the method has great economic benefits and environmental benefits.

Description

technical field [0001] The invention relates to the field of adsorbent preparation, in particular to an adsorbent used for wastewater treatment, especially a method for preparing the adsorbent from modified wheat straw. Background technique [0002] With the rapid development of modern industries such as textile industry, paper industry, rubber industry, plastic industry, pharmaceutical industry, food industry and cosmetics, the discharged wastewater contains a large amount of dyes, causing more and more serious water pollution. Most dye molecules have complex aromatic ring structures, are chemically stable, have certain toxicity, and are difficult to biodegrade. [0003] Wheat straw is a cheap and easy-to-obtain agricultural resource. The annual output in our country is very huge. Except for a small part of these wheat straws used as feed, most of them are thrown away as fuel or waste. The utilization rate is very low, which not only causes The great waste of natural resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
Inventor 丁超郭帅高学坤
Owner 洛阳新巨能高热技术有限公司
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