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A kind of adsorbent for treating acrylonitrile wastewater and its preparation method and application

A technology of acrylonitrile waste water and adsorbent, which is applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve secondary pollution and other problems, and is beneficial to the load and the environment Protective, widely distributed effect

Active Publication Date: 2015-11-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the disadvantage that the acrylonitrile wastewater adsorbent in the prior art is likely to cause secondary pollution, the present invention provides an adsorbent for treating acrylonitrile wastewater and its preparation method and application, especially provides a Reactive adsorbent and its preparation method and application

Method used

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  • A kind of adsorbent for treating acrylonitrile wastewater and its preparation method and application
  • A kind of adsorbent for treating acrylonitrile wastewater and its preparation method and application
  • A kind of adsorbent for treating acrylonitrile wastewater and its preparation method and application

Examples

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Effect test

Embodiment 1

[0033] A preparation method of an adsorbent for treating acrylonitrile waste water, the steps are as follows:

[0034] (1) Wash and remove impurities from the root of Arundis reed, cut it into sections, and dry it in an oven at 105°C for 12 hours. The dried Arundis root is pulverized in a pulverizer and passed through a 80-mesh sieve to obtain Arundis root powder; Immerse the root powder of reed bamboo in 45% pyrophosphoric acid aqueous solution for 10 hours, the mass ratio of the root powder of reed bamboo to the solution of pyrophosphoric acid is 1:1, take out the root powder of reed bamboo soaked above and place In a muffle furnace, carbonize and activate at 500°C for 1 hour, stop heating, cool, wash with deionized water at 100°C until the pH of the washing solution remains unchanged, and dry to obtain activated carbon particles;

[0035] (2) Add 2 g of the activated carbon particles obtained in step (2) to 100 ml of 0.07 mol / L ferrous sulfate solution, stir and soak for 4 ...

Embodiment 2

[0039] A kind of preparation method of the adsorbent of processing acrylonitrile waste water, step is the same as embodiment 1, difference is:

[0040]The dried reed bamboo root in the step (1) is pulverized in a pulverizer and passed through a 200-mesh sieve to obtain a reed bamboo root powder; the mass concentration of the pyrophosphoric acid solution is 40%; the carbonization activation temperature in the muffle furnace is 600°C ; The molar concentration of the ferrous sulfate solution in step (2) is 0.1mol / L.

[0041] The adsorbent for the treatment of acrylonitrile wastewater prepared in this example is measured by the specific surface area analyzer as having a specific surface area of ​​422.25m 2 / g, the average pore size is 4.37nm, the average particle size is 150.26μm, and the iron loading is 10.5%.

Embodiment 3

[0043] A preparation method of an adsorbent for treating acrylonitrile waste water, the steps are as follows:

[0044] (1) Wash and remove impurities from the root of Reed Bamboo, cut it into sections, and dry it in an oven at 105°C for 12 hours. After the dried root of Reed Bamboo is crushed in a pulverizer, it passes through a 200-mesh sieve to obtain root powder of Reed Bamboo;

[0045] Soak the root powder of reed bamboo in 45% pyrophosphoric acid aqueous solution for 10 hours, the mass ratio of the root powder of reed bamboo to the solution of pyrophosphoric acid is 1:2, take out the root powder of reed bamboo soaked above and place In a muffle furnace, carbonize and activate at 500°C for 1 hour, stop heating, cool, wash with deionized water at 90°C until the pH of the washing liquid remains unchanged, and dry naturally to obtain activated carbon particles;

[0046] (2) Add 2 g of activated carbon particles obtained in step (2) to 100 ml of 0.07 mol / L ferrous sulfate solu...

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Abstract

The invention relates to an adsorbent for treating acrylonitrile waste water as well as a preparation method and an application of adsorbent. According to the adsorbent, bamboo reed root activated carbon particles are soaked in a ferrous sulfate solution, hybrid reaction of the soaked activated carbon particles, ethanol aqueous solution, polyethylene glycol-4000 and NaBH4 aqueous solution is carried out at normal temperature so as to obtain activated carbon particles loaded with nano-iron. The activated carbon particles are prepared by using bamboo reed roots as raw materials; the process is simple and the cost of the raw material is low, and harmful pollutants can be effectively decomposed by the prepared activated carbon particles loaded with the nano-iron; a plurality of primary cells can be formed when the loaded nano-iron and activated carbon are in contact with waste water, and chemical reaction of the primary cells and acrylonitrile is carried out, so that acrylonitrile is decomposed and subsequent biodegradability is improved.

Description

technical field [0001] The invention relates to an adsorbent for treating acrylonitrile wastewater, a preparation method and application thereof, and belongs to the field of environmental protection and wastewater treatment. Background technique [0002] Water pollution is one of the major environmental problems facing our country. Among them, industrial wastewater accounts for more than 70% of the total sewage volume, which is a difficult problem in the field of environmental protection research at home and abroad, and its purification treatment has attracted more and more attention. The cyanide-containing wastewater produced in the industrial production of acrylonitrile is a typical high-concentration organic wastewater; studies have shown that the existence of trace amounts of acrylonitrile in the water environment will cause high toxicity and potential "three-caused" toxicity in the water body, which is a priority in my country. Acrylonitrile is included in the list of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/38
Inventor 岳钦艳肖佳楠高宝玉
Owner SHANDONG UNIV
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