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Preparation method for reed-based active carbon

A technology of activated carbon and reed, applied in the field of preparation of reed-based activated carbon, can solve the problems of leaves and dry rice stalks falling into the water environment, affecting the cycle of pollutants in sewage, etc., and achieve a good adsorption effect.

Inactive Publication Date: 2016-12-21
句容市百诚活性炭有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the reeds are not harvested at the end of the growing period, there will be a lot of rotting leaves and dry rice stalks falling into the water environment, which may affect the cycle of pollutants in the sewage

Method used

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  • Preparation method for reed-based active carbon

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method for reed-based activated carbon, comprising the following steps:

[0018] Step 1, taking reeds, drying and crushing to obtain dry reed powder;

[0019] Step 2, in parts by weight, mix 10 parts of reed dry powder with 2 parts of acetic acid, 0.4 part of phosphoric acid, 0.05 part of sodium alginate, and 10 parts of water, soak at 30°C for 24 hours, and dry to obtain a modified dry powder;

[0020] Step 3, in parts by weight, mix 10 parts of modified dry powder with 0.5 part of sodium carbonate and 0.1 part of sodium lauryl sulfate, disperse, heat up to 100°C and keep it for 20 minutes to obtain a mixture;

[0021] Step 4, heating the obtained mixture to 700°C for 200 min in a nitrogen atmosphere, cooling, and grinding to obtain the obtained mixture.

[0022] Among them, the particle size of dry reed powder in step 1 is 10-20 mesh; the drying temperature in step 2 is 70°C; the dispersion condition in step 3 is 1000rpm, 15min, and the heating rate is ...

Embodiment 2

[0024] A preparation method for reed-based activated carbon, comprising the following steps:

[0025] Step 1, taking reeds, drying and crushing to obtain dry reed powder;

[0026] Step 2, in parts by weight, mix 10 parts of dry reed powder with 3 parts of acetic acid, 0.7 parts of phosphoric acid, 0.08 parts of sodium alginate, and 17 parts of water, soak at 35°C for 17 hours, and dry to obtain a modified dry powder;

[0027] Step 3, in parts by weight, mix 10 parts of modified dry powder with 0.7 part of sodium carbonate and 0.1 part of sodium lauryl sulfate, disperse, heat up to 110°C and keep it for 15 minutes to obtain a mixture;

[0028] Step 4: Heat the obtained mixture to 750°C for carbonization for 150 minutes in a nitrogen atmosphere, cool and grind to obtain the obtained mixture.

[0029] Among them, the particle size of dry reed powder in step 1 is 10-20 mesh; the drying temperature in step 2 is 80°C; the dispersion condition in step 3 is 1100rpm, 12min, and the he...

Embodiment 3

[0031] A preparation method for reed-based activated carbon, comprising the following steps:

[0032] Step 1, taking reeds, drying and crushing to obtain dry reed powder;

[0033] Step 2, in parts by weight, mix 10 parts of reed dry powder with 5 parts of acetic acid, 0.9 part of phosphoric acid, 0.08 part of sodium alginate, and 17 parts of water, soak at 30°C for 24 hours, and dry to obtain a modified dry powder;

[0034] Step 3, in parts by weight, mix 10 parts of modified dry powder with 0.9 part of sodium carbonate and 0.5 part of sodium lauryl sulfate, disperse, heat up to 100°C and keep it for 20 minutes to obtain a mixture;

[0035] Step 4, heating the obtained mixture to 700°C for 200 min in a nitrogen atmosphere, cooling, and grinding to obtain the obtained mixture.

[0036] Among them, the particle size of dry reed powder in step 1 is 10-20 mesh; the drying temperature in step 2 is 70°C; the dispersion condition in step 3 is 1000rpm, 15min, and the heating rate is ...

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Abstract

The invention provides a preparation method for reed-based active carbon. The preparation method comprises the following steps: taking reed, drying and crushing the reed, mixing obtained dry reed powder with acetic acid, phosphoric acid, sodium alginate and water, carrying out impregnation at 30 to 40 DEG C for 12 to 24 h and then carrying out drying; mixing the obtained modified dry powder with sodium carbonate and sodium dodecyl sulfate, then carrying out dispersion, carrying out heating 100 to 120 DEG c and maintaining the temperature for 10 to 20 min; and heating the obtained mixture in a nitrogen atmosphere to 700 to 800 DEG C for carbonization for 120 to 200 min and carrying out cooling and grinding. The active carbon prepared in the invention has a specific surface area of 2157 m<2> / g or above, a pore volume of 0.532 cm<3> / g, an average bore diameter of 2.6 nm, lead adsorption quantity of 52.6 mg / g or above, cadmium adsorption quantity of 43.5 mg / g or above and chromium adsorption quantity of 47.3 mg / g or above, and can well adsorb heavy metal ions.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a preparation method of reed-based activated carbon. Background technique [0002] Activated carbon is a man-made material, also known as carbon molecular sieve. It has abundant internal pores and a high specific surface area, making it an excellent adsorption material. The physical and chemical properties of activated carbon are stable, insoluble in water, insoluble in organic solvents, acid and alkali resistant, able to withstand water humidity, high pressure and high temperature, and renewable. As a circular economical material, the development and application technology of activated carbon is in line with the sustainable development strategy of my country's economy. [0003] The specific surface area and pore distribution of activated carbon are not only closely related to the preparation method, but also affected by the raw materials. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08
CPCC01P2006/12C01P2006/14C01P2006/16
Inventor 林丽萍叶孙龙周敦满
Owner 句容市百诚活性炭有限公司
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