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Preparation method of melon seed peel-based activated carbon for efficiently adsorbing CO2

A technology of activated carbon and melon seeds, applied in the field of materials, can solve the problem of less high-efficiency activated carbon, and achieve the effects of high selective adsorption, cost saving and cost reduction.

Active Publication Date: 2016-04-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But currently, for CO 2 There are still relatively few high-efficiency activated carbons developed for this new type of pollutant.

Method used

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  • Preparation method of melon seed peel-based activated carbon for efficiently adsorbing CO2
  • Preparation method of melon seed peel-based activated carbon for efficiently adsorbing CO2
  • Preparation method of melon seed peel-based activated carbon for efficiently adsorbing CO2

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Experimental program
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Effect test

Embodiment 1

[0048] CO adsorption 2 The preparation steps of the melon seed skin-based activated carbon are as follows: take 3 g of 20-30 mesh melon seed skins and place them in a tube furnace, raise the temperature from room temperature to 500 degrees Celsius at a rate of 5 degrees Celsius / min, and keep at 500 degrees Celsius for 1.5 hours. Add 1g of carbonized material into 20mL potassium hydroxide solution, wherein the mass of potassium hydroxide is 0.15g. After two days of impregnation, the material was dried in an oven at 105°C for 0.5 hours. The dried material was placed in a tube furnace for activation. The activation procedure was as follows: first, the temperature was raised to 500 degrees Celsius at a rate of 10 degrees Celsius / min, and then to 700 degrees Celsius at a rate of 5 degrees Celsius / min. Keep at 700°C for 1.5 hours, then cool down to room temperature naturally. During the process of carbonization and activation, N 2 Protect. The activated material is repeatedly wa...

Embodiment 2

[0051] CO adsorption 2 The preparation steps of the melon seed skin-based activated carbon are as follows: take 3 g of 20-30 mesh melon seed skins and place them in a tube furnace, raise the temperature from room temperature to 500 degrees Celsius at a rate of 5 degrees Celsius / min, and keep at 500 degrees Celsius for 1.5 hours. Add 1g of carbonized material into 20mL of potassium hydroxide solution, wherein the mass of potassium hydroxide is 0.75g. After two days of impregnation, the material was dried in an oven at 105°C for 1 hour. The dried material was placed in a tube furnace for activation. The activation procedure was as follows: first, the temperature was raised to 500 degrees Celsius at a rate of 10 degrees Celsius / min, and then to 700 degrees Celsius at a rate of 5 degrees Celsius / min. Keep at 700°C for 1.5 hours, then cool down to room temperature naturally. During the process of carbonization and activation, N 2 Protect. The activated material is repeatedly wa...

Embodiment 3

[0055] CO adsorption 2 The preparation steps of the melon seed peel activated carbon are as follows: take 3g of 20-30 mesh melon seed rinds and place them in a tube furnace, raise the temperature from room temperature to 500 degrees Celsius at a rate of 5 degrees Celsius / min, and keep at 500 degrees Celsius for 1.5 hours. Add 1g of carbonized material into 20mL of potassium hydroxide solution, wherein the mass of potassium hydroxide is 1g. After two days of impregnation, the material was dried in an oven at 105°C for 2 hours. The dried material was placed in a tube furnace for activation. The activation procedure was as follows: first, the temperature was raised to 500 degrees Celsius at a rate of 10 degrees Celsius / min, and then to 700 degrees Celsius at a rate of 5 degrees Celsius / min. Keep at 700°C for 1.5 hours, then cool down to room temperature naturally. During the process of carbonization and activation, N 2 Protect. The activated material is repeatedly washed with...

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Abstract

The invention provides a preparation method of melon seed shell based activated carbon capable of adsorbing CO2. The method comprises the following steps of: crushing melon seed shells to obtain melon seed powder, wherein the average granularity of the melon powder is between 500 and 800 micrometers; carbonizing the melon seed powder to obtain a carbonized material; immersing the carbonized material in a potassium hydroxide solution; activating the immersed carbonized material to obtain the melon seed shell based activated carbon for adsorbing CO2. The melon seed shell based activated carbon for adsorbing CO2 prepared by adopting the method has the advantages of low cost, high adsorption amount, good adsorption selectivity, easy regeneration and the like.

Description

technical field [0001] The present invention relates to the field of materials. Specifically, the present invention relates to a highly efficient CO adsorption 2 The preparation method of the melon seed peel-based activated carbon. Background technique [0002] The output of melon seeds in my country is huge, and the amount of melon seed skins produced is also very considerable. These food wastes have no value in use and are generally sent to waste treatment plants as garbage for disposal. However, due to the advantages of high carbon content and low price, melon seed husk is an ideal precursor for the preparation of activated carbon materials. Therefore, the preparation of activated carbon materials using melon seed husk as a precursor can not only reduce the amount of domestic waste, but also develop efficient adsorption materials. [0003] In recent years, preventing climate change has become a major international hot issue. Countries have carried out extensive coope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/12B01D53/02C01B32/348
CPCY02C20/40Y02P20/151
Inventor 邓述波魏浩然余刚黄俊王斌
Owner TSINGHUA UNIV
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