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Modification method and application of a kind of activated carbon

A technology of activated carbon and modification, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of complex operation process, time-consuming, waste liquid pollution, etc., and achieve high processing efficiency, increased porosity, Experimental conditions require less effect

Active Publication Date: 2019-05-17
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The performance of activated carbon obtained by this method is improved, but the operation process is more complicated, time-consuming and will produce a large amount of waste liquid to pollute the environment

Method used

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  • Modification method and application of a kind of activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of modification method of activated carbon of the present embodiment, comprises the following steps:

[0033] (1) Put 4g of coconut shell activated carbon in an oven at a temperature of 60°C. After baking for 24 hours, take it out, weigh 2g with an electronic balance, and use it for later modification (marked as AC-1). Put it into a sealed bag as a comparison sample (marked as AC-2).

[0034] (2) Air is used as the gas source, and the flow rate is 20cc / min; the working voltage of the atmospheric pressure low-temperature plasma equipment is kept at 220V, and after turning on the power, let the equipment stand still for 40 seconds, and then turn off the power.

[0035] (3) Take No. AC-1 activated carbon, put it into a 50ml beaker, spread it evenly on the bottom of the beaker, and place it just below the jet outlet of the atmospheric pressure low temperature plasma equipment.

[0036](4) Adjust the height of the equipment so that the distance between the low-temper...

Embodiment 2

[0041] A kind of modification method of activated carbon of the present embodiment, comprises the following steps:

[0042] (1) Put 4g of coconut shell activated carbon in an oven, bake at a constant temperature of 60°C for 24 hours, take it out, weigh 2g with an electronic balance, (for later modification) (marked as AC-3), and pack the rest Put it into a sealed bag, (as a comparison sample) (marked as No. AC-4).

[0043] (2) Air is used as the gas source, and the flow rate is 20cc / min; the working voltage of the atmospheric pressure low-temperature plasma equipment is kept at 220V, and after turning on the power, let the equipment stand still for 40 seconds, and then turn off the power.

[0044] (3) Take No. AC-3 activated carbon, put it into a 50ml beaker, spread it evenly on the bottom of the beaker, and place it just below the jet outlet of the atmospheric pressure low temperature plasma equipment.

[0045] (4) Adjust the height of the equipment so that the distance betw...

Embodiment 3

[0050] A kind of modification method of activated carbon of the present embodiment, comprises the following steps:

[0051] (1) Put 4g of coconut shell activated carbon in an oven at a temperature of 60°C. After baking for 24 hours, take it out, weigh 2g with an electronic balance, and use it for later modification (marked as No. AC-5), and the remaining Put it into a sealed bag as a comparison sample (marked as No. AC-6).

[0052] (2) Use oxygen as the gas source with a flow rate of 30cc / min; keep the operating voltage of the atmospheric pressure low-temperature plasma equipment at 220V, turn on the power, let the equipment stand for 40s, and then turn off the power.

[0053] (3) Take No. AC-5 activated carbon, put it into a 50ml beaker, spread it evenly on the bottom of the beaker, and place it directly under the atmospheric pressure low-temperature plasma equipment.

[0054] (4) Adjust the height of the equipment so that the distance between the low-temperature plasma jet ...

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Abstract

The invention discloses a modification method and application of activated carbon. The modification method of the activated carbon comprises the following steps of S1, subjecting the activated carbon to drying treatment; S2, introducing a gas into an atmospheric-pressure low-temperature plasma device according to a gas flow rate of 1cc / min to 200cc / min, sending the activated carbon subjected to the drying treatment into the plasma device, making the activated carbon located at an ejection outlet of the low-temperature plasma device, controlling the movement speed of the ejection outlet of the plasma device to be 0mm / s to 30mm / s, and carrying out treatment for 0.5min to 30min, so as to subsequently obtain modified activated carbon. According to the modification method, the modification of the activated carbon through spark discharge is realized through a physical way; the specific surface area of the activated carbon is obviously increased; further, surface functional groups are also more abundant. The modification process is simple and convenient; the efficiency is high; further, no pollutants are generated.

Description

【Technical field】 [0001] The invention relates to a modification method and application of activated carbon. 【Background technique】 [0002] With the rapid development of the national economy, while enjoying the convenience brought by economic development, people are also facing the severe test brought by environmental problems. [0003] As a commonly used adsorption material, activated carbon has the characteristics of low cost, wide application and environmental friendliness, which makes it have broad application prospects in air purification, sewage treatment and energy storage, and brings great economic benefits. [0004] However, general activated carbon has disadvantages such as poor adsorption selectivity, unreasonable specific surface area and pore structure. Through surface modification, a more ideal pore structure and specific surface area can be obtained, thereby improving the adsorption capacity and adsorption selectivity of activated carbon. The current commonl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/366
CPCC01P2004/03C01P2006/12
Inventor 唐国翌沈成柱刘海峰陈耀刚陈丽杰宋国林
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV