Method for preparing activated carbon fibers with high specific surface by use of cotton linters

A technology for preparing activated carbon and cotton linters, which is applied in the chemical characteristics of fibers, chemical instruments and methods, and other chemical processes, etc., can solve the problems of pollution, shortage of raw materials for activated carbon fiber preparation, etc. The effect of condo

Inactive Publication Date: 2011-10-19
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the pollution caused by insufficient utilization of cotton linters in the prior art, and the shortage of raw materials for pr

Method used

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  • Method for preparing activated carbon fibers with high specific surface by use of cotton linters
  • Method for preparing activated carbon fibers with high specific surface by use of cotton linters
  • Method for preparing activated carbon fibers with high specific surface by use of cotton linters

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Biological pretreatment of raw materials: wash the cotton linters with water to keep the moisture content at about 55wt%, put them in a fermenter, inoculate 8wt% of polyporus bacteria, keep the temperature at 30-33°C for 6 days, and wash again Finally, it is dried at 80°C-100°C to achieve the effect of purifying cotton linters.

[0027] Alkali melting: Put KOH into the reactor and melt at 380°C;

[0028] Activation of charcoal: According to the mass ratio of cotton linters raw material: KOH=1:3, add cotton linters into molten KOH, stir while adding to make it evenly mixed; continue to heat up to 600°C, keep for 1 hour and then close power supply, naturally cooled to room temperature and taken out; washed with deionized water to a pH value of 6.7, dried or naturally air-dried to obtain cotton linter activated carbon fibers.

[0029] Gained cotton linter activated carbon fiber electron microscope photo is as follows figure 1 As shown, the pore size distribution and N 2...

Embodiment 2

[0033] Biological pretreatment of raw materials: Wash the cotton linters in advance to keep the moisture content at about 58wt%, put them in a fermentation tank, inoculate 8wt% of white rot fungi, and keep the temperature at 30°C-33°C for 4-6 days of fermentation treatment , after washing with water again, dry at 80°C-100°C to achieve the effect of purifying cotton linters; put NaOH into the reaction kettle and melt at 320-360°C; according to cotton linters: NaOH=1 : 2.5 mass ratio The cotton linters after the aforementioned treatment are added in the NaOH that melts, stir while adding, make it mix evenly; Continue to heat up to 700 ℃, turn off the power after keeping 1 hour, naturally cool to room temperature and take out; Washing with deionized water to a pH value of 7, drying or drying naturally, the cotton linter activated carbon fiber is obtained.

Embodiment 3

[0035] Biological pretreatment of raw materials: wash the cotton linters in advance to keep the moisture content at 56-58wt%, put them in a fermentation tank, inoculate 9wt% of white rot fungi, and keep the temperature at 30-33°C for 5 days of fermentation treatment. After washing with water again, dry at 80°C-100°C to achieve the effect of purifying cotton linters; put NaOH into the reaction kettle and melt at 320-360°C; press cotton linters: NaOH=1:3 Mass ratio Add the treated cotton linters to the melted NaOH, stir while adding to make it evenly mixed; continue to heat up to 600°C, keep it for 1 hour, turn off the power, naturally cool to room temperature and take it out; use deionized water After washing to a pH value of 6.5, drying or drying naturally, the cotton linter activated carbon fiber is obtained.

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Abstract

The invention relates to a method for preparing activated carbon fibers by the use of cotton linters, comprising the following steps of: placing cotton linters into a fermentation cylinder, inoculating turkey-tail or white rot fungus, performing a fermentation treatment, followed by washing again and drying; placing KOH or NaOH into a reaction vessel, heating until KOH or NaOH is melted; adding the treated cotton linters to the molten NaOH or KOH with the mass ratio of cotton linters to KOH or NaOH being 1:2-4, heating the mixture to the temperature of 600-800 DEG C, and performing a carbonization-activation treatment for 1-1.5 hours. The specific surface of the obtained cotton linter activated carbon fibers is over 2000m<2>/g. The technology provided by the invention is simple and is used to accomplish waste utilization. The prepared activated carbon fibers have large specific surface, strong sorption as well as excellent performance, and can effectively remove harmful pollutants.

Description

technical field [0001] The invention relates to a method for preparing activated carbon fibers with high specific surface area by using cotton linters, and belongs to the technical field of resource reuse for preparing adsorption materials. Background technique [0002] Activated carbon fiber is a new type of carbonaceous adsorbent material developed after powder activated carbon and granular activated carbon. It has large specific surface area, rich micropores, narrow pore size distribution, fast adsorption and desorption speed, strong regeneration ability, and large adsorption capacity. And good adsorption kinetics, so widely used in environmental protection, textile, chemical, electronics, medical, food, atomic energy and other industries. At present, the raw materials for preparing activated carbon fibers mainly include viscose silk, polypropylene nitrile-based fibers, pitch fibers and phenolic fibers. The preparation of activated carbon with these raw materials has the ...

Claims

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Application Information

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IPC IPC(8): D01F9/16B01J20/20B01J20/28B01J20/30
Inventor 岳钦艳孙媛媛高悦许醒高宝玉黄理辉姚付江
Owner SHANDONG UNIV
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