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Powered activated carbon prepared by using peat compounding corn stalks as raw materials and preparation method

A technology of powdered activated carbon and corn stalks, which is applied to powdered activated carbon to prepare the above-mentioned powdered activated carbon and the field of application of the above-mentioned powdered activated carbon, which can solve problems such as disconnection between research and promotion, waste of straw resources, and aggravated smog weather, so as to reduce air pollution. , to avoid air pollution problems, the effect of simple production process

Inactive Publication Date: 2015-08-19
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in addition to the traditional utilization and simple reproduction (burning fire for cooking, returning to the field, processing feed), a large amount of corn stalks are exhausted or burned on the spot, which not only causes a huge waste of straw resources, but also produces a lot of smoke and CO, CO 2 and other pollutants, exacerbating the occurrence of smog weather, polluting the atmosphere, destroying the ecological environment and farmland soil structure, and posing a great threat to industrial and agricultural production and traffic safety
[0012] With the development of science and technology, although my country has carried out the development and utilization of straw in related fields, the level of comprehensive utilization of straw is still low, the feasibility is not high, the research and promotion are out of touch, and the actual application technology in the comprehensive utilization of crop straw is still not perfect

Method used

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  • Powered activated carbon prepared by using peat compounding corn stalks as raw materials and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0068] 1) Take a certain amount of peat raw material, wash it with clean water, and sieve it to remove sand-like solids and various sundries, then put it into an oven with a set temperature of 110°C, dry it for 24 hours, take it out, and put it in a crucible after cooling Crush to make it easy to impregnate and set aside;

[0069] 2) A certain amount of corn stalks was dried in an oven at 80°C for 24 hours, and after natural cooling, the stalks were crushed, added to n-ethane, soaked for 1 hour, washed with deionized water, and vacuum-dried to obtain corn stalks from which surface impurities were removed. corn stover powder;

[0070] 3) Put 20g of peat obtained in step 1 and 20g of straw obtained in step 2 into 2mol / L sodium hydroxide solution, mix and boil for 1 hour, filter after the reaction is completed, wash until neutral, and dry the filter residue to obtain deashed Peat and corn stover raw materials;

[0071] 4) preparing 200ml concentration is the sodium carbonate so...

Embodiment 2

[0076] 1) Take a certain amount of peat raw material, wash it with clean water, and sieve it to remove sand-like solids and various sundries, then put it into an oven with a set temperature of 110°C, dry it for 24 hours, take it out, and put it in a crucible after cooling Crush to make it easy to impregnate and set aside;

[0077] 2) A certain amount of corn stalks was dried in an oven at 80°C for 24 hours, and after natural cooling, the stalks were crushed, added to n-ethane, soaked for 1 hour, washed with deionized water, and vacuum-dried to obtain corn stalks from which surface impurities were removed. corn stover powder;

[0078] 3) Put 20g of peat obtained in step 1 and 20g of straw obtained in step 2 into 2mol / L sodium hydroxide solution, mix and boil for 1 hour, filter after the reaction is completed, wash until neutral, and dry the filter residue to obtain deashed Peat and corn stover raw materials;

[0079] 4) preparing 200ml concentration is the potassium hydroxide...

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Abstract

The invention relates to powered activated carbon prepared by using peat compounding corn stalks as raw materials. In the powdered activated carbon, water content is 59% to 61%, a total amount of organic is 74% to 76%, humic acid content is 15% to 30%, ash content is 15% to 17%, the pH is 4 to 5, a surface area of the powered activated carbon is 1300 to 1500 m<2> / g, an adsorption capacity of iodine is 1150-1200 mg / g, and an absorptive value of methylene blue is 230-280 mg / g. The invention further discloses a method for preparing powered activated carbon by using peat compounding corn stalks as raw materials. The powered activated carbon of the invention can serve as a catalyst carrier for removing heavy metal and organic pollutants in waste water.

Description

technical field [0001] The invention belongs to the technical field of low-cost resource utilization and material production, and in particular relates to a powdered activated carbon prepared from peat compounded with corn stalks. [0002] The present invention also relates to a method for preparing the above-mentioned powdered activated carbon. [0003] The present invention also relates to the use of the above-mentioned powdered activated carbon. Background technique [0004] Activated carbon is a kind of charcoal material made of charcoal, sawdust, coconut shell, various fruit stones, pulp waste liquid and other agricultural and forestry by-products, such as biomass, coal and heavy petroleum, which are activated by carbonization. It is a kind of microcrystalline carbon material with black color, developed internal pore structure, large specific surface area and strong adsorption capacity. As one of the oldest and most important industrial adsorbents, compared with other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 陈求稳罗明汉徐强马金峰李若男李国良
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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