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A kind of preparation method of graphitized porous carbon for the removal of soil and musty substances

A technology of graphitization and porous carbon, applied in chemical instruments and methods, inorganic chemistry, water pollutants, etc., can solve the problems of low removal efficiency of activated carbon, limited adsorption capacity, long adsorption process, etc., and achieve excellent adsorption removal effect, Effect of increased pore volume and shortened impregnation time

Active Publication Date: 2022-07-01
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

However, the removal of activated carbon still has the disadvantages of low removal efficiency and limited adsorption capacity.
Therefore, it will lead to problems such as the adsorption process is too long and the required dosage is too large.

Method used

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  • A kind of preparation method of graphitized porous carbon for the removal of soil and musty substances
  • A kind of preparation method of graphitized porous carbon for the removal of soil and musty substances
  • A kind of preparation method of graphitized porous carbon for the removal of soil and musty substances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of preparation of graphitized porous carbon (its process flow is as follows: figure 1 shown):

[0043] S1, select each 50g powder activated carbon of coconut shell, wood and coal, grind with a ball mill and agate mortar, and pass through a 200-mesh sieve;

[0044] S2, pickling, with 0.10mol·L -1 The hydrofluoric acid solution is washed and suction filtered, and the washing and suction filtration operations are repeated twice before the end;

[0045] S3, washing and drying, repeatedly washing the acid-washed activated carbon with ultrapure water until it is neutral, and placing it in an oven, drying at 105° C. for 12 hours, and sealing and storing it for later use;

[0046] S4, impregnation treatment, 5 g of the activated carbon obtained in step S3 is impregnated in Fe(NO) at a ratio of 3 mmol / g 3 ) 3 •9H 2 In O catalyst solution, immersion for 12h;

[0047] S5, curing treatment, placing the solution obtained in step S4 in an oven, drying at 105° C. for 12 h...

Embodiment 2

[0051] A kind of preparation of graphitized porous carbon:

[0052] S1, select each 50g powder activated carbon of coconut shell, wood and coal, grind with a ball mill and agate mortar, and pass through a 200-mesh sieve;

[0053] S2, pickling, with 0.10mol·L -1 The hydrofluoric acid solution is washed and suction filtered, and the washing and suction filtration operations are repeated twice before the end;

[0054] S3, washing and drying, repeatedly washing the acid-washed activated carbon with ultrapure water until it is neutral, and placing it in an oven, drying at 105° C. for 12 hours, and sealing and storing it for later use;

[0055] S4, impregnation treatment, 5 g of the activated carbon obtained in step S3 is impregnated in Fe(NO) at a ratio of 1.0 mmol / g 3 ) 3 ·9H 2 In the O catalyst solution, ultrasonically vibrate for 1h, and the oscillation frequency is 20KHz;

[0056] S5, curing treatment, placing the solution obtained in step S4 in an oven, drying at 105° C. ...

Embodiment 3

[0060] Material Characterization and Property Determination

[0061] 1. Transmission electron microscope test

[0062] The samples were analyzed using high-resolution transmission electron microscopy.

[0063] The above-mentioned test is carried out to the graphitized porous carbon prepared by common activated carbon (coconut shell activated carbon), embodiment 1 and embodiment 2, and the results are as follows Figure 2-4 shown. figure 2 It is the transmission electron microscope image of ordinary coconut shell activated carbon, and its structure is more disordered; image 3 The transmission electron microscope image of the graphitized porous carbon prepared in Example 1 clearly shows the diffraction fringes of the 002 crystal plane of graphite, which changes to a layered structure and has a good degree of graphitization; Figure 4 For the TEM image of the graphitized porous carbon prepared in Example 2, it can be seen more clearly that the sample structure is transformed...

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Abstract

The invention discloses a method for preparing graphitized porous carbon for removing musty-smelling substances, and relates to the technical field of activated carbon preparation. Steps for volumetric graphitization of porous carbon. The graphitized porous carbon comprises a graphitic layered ordered structure, the graphitization degree of which is not less than 36; and, a microporous and / or mesoporous structure, the micropore volume of the graphitized porous carbon is not less than 0.23; the graphite The 2-MIB adsorption capacity of the porous carbon was greater than 270 ng / mg. The graphitized porous carbon prepared by the method provided by the invention has a higher degree of graphitization, abundant micropores, and a significant improvement in adsorption energy. The field has huge application prospects.

Description

technical field [0001] The invention belongs to the technical field of preparation of activated carbon, and in particular relates to a preparation method of graphitized porous carbon for removing soil and musty substances. Background technique [0002] In recent years, there have been many reports on the odor problems of drinking water in China, such as the fishy odor and musty smell of Taihu Lake, the corrupt and grassy odor of Huangpu River, and the odor and fishy odor of the Yellow River in Inner Mongolia during the freezing period. Odor incidents in drinking water have a wide distribution and are a common problem, and most of the odor incidents in recent years are related to human factors such as chemical leakage and environmental pollution. [0003] The musty smell is the most common type of odor in drinking water. The terpenoids 2-methylisocamphenol (2-MIB) and geosmin produced during the metabolism of algae and actinomycetes are the sources of musty smell in drinking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/36B01J20/20C02F1/28C02F101/34
CPCC01B32/36B01J20/20C02F1/281C02F2101/34C02F2101/40
Inventor 杨敏杨帆于建伟王齐
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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